Walker MT User Manual

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OWNER’S MANUAL

Safety, Assembly, Operating, and Maintenance Instructions

Model MT (20.0 / 25.0 HP)

(Covers Serial Numbers 95-21329 and on)

™

Please Read and Save These Instructions Effective Date: 08-14-98

For Safety, Read All Safety and Operation P/N 8000-1 Instructions Prior to Operating Machine Price $5.00

Foreword

Thank you. . .for purchasing a Walker mower. Every effort has been made to provide you with the most reliable mower on the market, and we are sure you will be among our many satisfied customers. If for any reason this product does not perform to your expectations, please contact us at (970) 221-5614. Every customer is important to us. Your satisfaction is our goal.

Please. . .read this manual thoroughly! T his manua l is to b e used in conj unction with the engine manufacturer’s manual for the specific engine on the mower model you have purchased. Before you operate your new mower, please read this entire manual. Some of the information is crucial for proper operation and maintenance of this mower - it will help protect your investment and ensure that the mower performs to your satisfaction. Some of the information is important to your safety and must be read and understood to help prevent possible injury to the operator or others. If anything in this manual is confusing or hard to understand, please call our service department, at (970) 221-5614, for clarification before operating or servicing this mower .

This manual covers Model MT with the K ohl er Com man d CH20 (20.0 HP) gasoline engine, or optional Kohler Command CH25 (25.0 HP) gasoline engine.

All shields and guards mu st be in place for th e proper and safe operatio n of this machine. Where they are shown removed in this manual, it is for illustration purposes only. Do not operate this machine unless all shields and guards are in place.

Specifications given are based on the latest information available at the time this manual was produced.

Walker Mfg. Co. is continually striving to improve the design and perfo rmance o f its products. We reserve the right to make changes in specifications and design without thereby incurring any obligation relative to previously manufactured products.

Sincerely, WALKER MANUFACTURING COMPANY

Bob Walker, President

Table of Contents

General Information ________________ 1

HIGHLIGHTED INFORMATION _____________ 1 GLOSSARY ____________________________ 1 IDENTI FY ING NUMBER LOCATIONS________ 1 ENGINE SERIAL NUMBER LOCATION ______ 2 SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS __________ 2

Specifications _______________________ 3

ENGINE____________________ ____________ 3 ELECTRICAL SYST EM ___________________ 3 TRANSMISSION_________________________ 3 BLADE DRIVE ______________ ____________ 4 TIRE SIZE ______________________________ 4 TIRE PRESSURE ________________________ 5 DIMENSIONS (Tractor and Mower) ___ ______ 5 MOWER DECK__________________________ 5 CURB WEIGHT__________________________ 5 DRIVE BELTS________ ___________________ 6 GHS SYSTEM (Optional)__________________ 6 SEAT__________________________________ 6 FRAME/BODY CONSTRUCTION ___________ 6

Compo ne n t Identific a tion___________ 7 Safety Ins tructions _________________ 10

BEFORE OPERATING___________________ 10 OPERATING___________________________ 11 MAINTENANCE ________________________ 12 SAFETY, CONTROL, AND INSTRUCTION DECALS________ _____ 14

Assembly In structions _____________ 16

SETUP INSTRUCTIO N S _________________ 16

Tire Installation (Tractor)__________ _____ 16 Battery Service_______________________ 1 6

Wet Battery Service Dry Battery Service Battery Charging Battery Installation

Mower Deck Assembly ___________ _____ 17

Deck Caster Wheels Installation Deck Discharge Chute Installation Deck Discharge Shield Installation PTO Shaft Guard Installation

Mower Deck Installation on Tractor ______ 18

Deck Installat ion Deck Leveling

PREOPERATING CHECKLIST ____________ 21

__________________ 16

______________ _____ 16

________________ _____ 17

______________ _____ 17

_________ 17

_______ 18 _______ 18

___________ 1 8

_____________________ 18

_______________________ 20

Operating Instructions_____________ 24

CONTROL IDENTIFICATION, LOCA T IO N, AND FUNCTION _____________ 24

Operating Controls ___________________ 24

Engine Choke Engine Throttle Forward Speed Control (FSC) Steering Levers Blade Clutch (PTO) Parking Brake Front Body Latch Release Transmission Lockout Levers Cold Start Lever (J ackshaft Drive B elt Release)

Instrument Panel _____________________ 28

Hourmeter Voltmeter Oil Pressure Warning Light Over Temperature Warning Light Ignition Switch Light Switch (For Optional Lights) Warning Horn

STARTING THE ENGINE_________________ 30 ADJUSTING GROUND SPEED AND STEERING _________________ 31 ENGAGING THE MOWER________________ 32 STOPPING THE MACHINE_______________ 33 ADJUSTING CUTTING HEIGHT ___________ 34 TRANSMISSION LOCKOUT _______ _______ 34 RECOMMENDA TI ONS FOR MOWING ______ 35 RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT _______________ 36 GRASS HANDLING SYSTEM (GHS) _______ 37

General Information __________________ 38 Clogging Checklist ___________________ 39 Using the Tilt-Up Deck ________________ 40 Using the GHS Catcher________________ 40

Powerfil

“Full” Signal Horn

Cleaning the GHS Exhaust Screen ______ 40 Dumping the Catcher _________________ 41

Tailgate Dumping Using the Dump Bag Power Dump Option

________________ _______ 24

_______________ _______ 25

__________ 25

_____________________ 25

__________________ 25

________________ _______ 25

_____________ 26

___________ 26

__________________ _______ 29

___________________ _______ 29

____________ 29

________ 29

_______________ _______ 29

_______ 29

________________ _______ 29

___________________ _______ 40

____________________ 40

____________________ 41

_________________ 41

__________________ 42

_26

Table of Contents

Maintenance Instructions__________ 44

MAINTENANCE SCHEDULE CHART _______ 44 IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE _____ 45

Fuel System _______ _______ ___________ 45 Starting/Stopping _____________________ 45 Cooling System ______________________ 45 Air Cleaner System ___________________ 45 Oil _________________________________ 45

LUBRICATION _________________________ 46

Engine Oil _________ _______ ___________ 46

Engine Break-In Oil Checking Engine Crankcase Oil Level Changing Engine Crankcase Oil/Oil Filter

Grease Fitting and Oil Point Lubrication__ 47 Mower Deck Gearbox Lubrication _______ 50 DSD52 or DSD62 Mower Deck Lubrication 50 Tractor PTO Gearbox Lubrication _______ 51

Checking Gearbox Oil Level Changing Gearbox Oil

Gear Axle Lubrication _________________ 51 Hydrostatic Transmission Fluid _________ 52

Checking Hydrostatic Transmission Fluid Level Changing Hydrostatic Transmission Fluid

CLEANING ____________________________ 53

Engine Air Cleaner System _____________ 53

Turbine Precleaner

Donaldson Radialseal™ Air Cleaner (Primary) Kohler Air Cleaner (Secondary)

Foam Precleaner Paper Element

Engine Coo ling System___________ _____ 57

Air Intake System Cylinder Head Cooling Fins

Grass Buildup in Mower Housing________ 58

Non-Tilting Decks Tilt-Up Decks

GHS Blower _________________________ 59 GHS Exhaust Scre e n__________________ 59 Hydrostatic Transmission Cooling Fins __ 60

CHECKING/SERVICING _________________ 60

Security of Air Filtration Components ____ 60 Battery______________________________ 60

Electrolyte Level Cleaning the Terminals Charging the Battery

Tire Pressure ___________________ _____ 61 Sharpen Mower Blades ________________ 61 Drive Belts __________________________ 62 Mower Deck Gearbox Oil Seals _________ 63 Spark Plugs ____________________ _____ 63

___________________ 46

____ 46

_46

____________ 51

________________ 51

______________ 52

__ 52

______________ _____ 54

_________________ 54

_________ 5 6

__________________ 56

____________________ 56 _______________ _____ 57

____________ 57

_______________ _____ 58

__________________ _____ 58

________________ _____ 60

________________ 61

__________________ 61

Fuel Lines and Clamps ________________ 63 Engine Starter _______________________ 63 Blade Brake Action ___________________ 63

REPLACING/REPAIRING ________________ 63

Drive Belts __________________________ 63

Engine PTO Drive Belt Jackshaft Drive Belt GHS Blower Drive Belt Hydrostatic Ground Drive Belt

Fuel Filter _______ ____________________ 69 Blade Overload Shear Bolts ____________ 69 Mower Blades _______________________ 70 Mower Deck Gearbox Replacem en t______ 70 GHS Blower Assembly ________________ 71

GHS Blower Assembly Removal Blower Wheel Removal Blower Wheel Installation GHS Blower Assembly Installation

ADJUSTMENTS________________________ 73

Safety Switches ______________________ 73

Seat Switch

_________________ _______ 73

FSC Neutral-Park Switch PTO Switch

Tail Wheel Bearing Preload ______ _______ 73 Blade Clutch (PTO) ___________________ 74

__________________ _______ 73

Clutch Engagement/Belt Tension Clutch Disengagement/Brake Action Stop Block Eccentric Adjustment Clutch Idler Pulley Travel Adjustment Blade Brake Band Adjustment

Transmission Control _________________ 77

Set F orwar d Travel Limit (Stop) Steering Lever End Play Adjustment Neutral Function Adjustment Straight Ground Travel Adjustment

Forward Speed Control Friction Lock____ 79 Tilt-Up Deck Adjustable Stop ___________ 80 Carburetor __________________________ 80

Engine Idle Adjustment

GHS “Full” Signal Horn with Grass-Pak

Switch _______________ 81

________________ 65

__________________ 66

________________ 67

__________ 68

________ 71

_______________ 72

______________ 72

_______ 72

______________ 73

________ 74

_____ 75

________ 76

_____ 76

__________ 76

_________ 77

_____ 78

___________ 78

______ 79

_______________ 80

Troubleshooting (When Horn Fails to Operate)

__________ 81

Adjustment (When Horn Sounds at the Wrong Time)

ELECTRICAL SYS TEM__________________ 82

Circuit Breakers_________ _____________ 82 Wiring Diagram _________ ______ _______ 83

__ 82

Operator’s Notes______ _____________ 84 Warranty____________________ _______ 87

General Information

HIGHLIGHTED INFORMATION

Walker Manufacturing recommends that any service requiring special training or tools be performed by an authorized Walker Mower Dealer. There are several general practices to be aware of in the area of safety. Most accidents associated with the operation or maintenance of a Walker Mower are caused by disregarding basic safety precautions or specific warnings. Such accidents, in most cases, can be prevented by being aware of the dangers present.

Information of special importance has been highlighted in bold type in this manual. Refer to Safety

Instructions for the meanings of DANGER, WARN- ING, CAUTION, IMPORTANT, and NOTE.

GLOSSARY

There are many terms t hat are ei the r uniqu e to t his equipment or that are use d as acronyms. The following terms and their definitions will help while using this manual:

• DECK is the mowing attachment mounted on

the front of the tractor which includes the carrier frame, deck housing, blade drive gearboxes, and cutter blades.

• FORWARD SPEED CONTROL (FSC) con-

trols the maximum forward speed of the tractor; functioning as a cruise control.

• GRASS HANDLING SYST EM (G HS

mowed materia l and deposits it in the catcher.



) collects

• POWER TAKE-OFF (PTO) transmits engine

power to run the cutter blades and GHS blower.

• POWERFIL

throughout the interior of the grass catcher by an oscillating delivery spout.



spreads the mowed material

• RIGHT HAND (RH) refers to the right-hand side

of the tractor when the operator is seated facing forward in the tractor seat.

• SIDE DISCHARGE (SD) mows but does not

collect the mowed material.

• STEERING LEVERS steer the tractor by con-

trolling the dual hydrostatic transmissions.

• TRACTOR is the prime mover, including the en-

gine, drive train, operator seat, and controls to operate the mower.

• TRANSMISSION LOCKOUT releases the hy-

drostatic transmissions to permit freewheeling the tractor.

IDENTIFYING NUMBER LOCATIONS

The tractor serial number plate is affixed to t he tractor body just below the left rear corner of the seat. The mower deck serial number plate is affixed alongside the angle iron framing on the RH side of the RH mower blade drive. Model and serial num bers are helpful when obtaining replacem ent parts and maintenance assistance. For ready reference, please record these numbers in the space provided.

• GRASS-PAK

grass delivery spout (in the catch er) and acti-

vates the “full” signal horn when the grass catcher is fu ll.



SWITCH is mounted on the

• GROUND DRIVE refers to the dual hydrostatic

transmissions which drive the main wheels.

• HYDROSTATIC TRANSMISSION transmits

and controls power from the ground drive belt to the main drive wheel.

• LEFT HAND (LH) refers to the left-hand side of

the tractor when the operator is seated facing forward in the tractor seat.

Tractor Model No. _______________________ Tractor Serial No. ______________ _______ __ Deck Serial No. _______________________ Engine Model No. _______________________ Engine Serial No. _______________________ Date of Purchase _______________________

Fill In By Purchaser

General Information

Serial Number

Tractor Serial Number Location

Serial Number

SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS

The detailed servicing and repair of the engine, hydrostatic transmission, and gearboxes are not covered in this manual. Only routine maintenance and general service instructions are provided. For the service of these components during the limited warranty period, it is important to find a local, authori zed servicing agent of the component manufacturer. Any unauthorized work done on these components during t he warranty period may void the war- ranty. If you have any dif ficulty finding an authorized outlet or obtaining warranty service, please contact our Service Department for assistance:

Walker Manufacturing Company

5925 E. Harmony Road

Fort Collins, CO 80528

1-970-221-5614

Service manuals are available for each of these components from their respective manufacturers as follows:

Mower Deck Serial Number Location

ENGINE SERIAL NUMBER LOCATION

Refer to the engine manual that accompanies this manual for the location of the engine serial number . For the mower model covered by this manual, an engine manual is available coverin g the Kohler CH20 and CH25 gasoline engines.

Serial Number

Kohler Engines Kohler Company

Kohler, WI 53044

Hydrostatic Eaton Cor por a tio n Transmissions 15151 Highway 5

Eden Prairie, MN 55344

Gearboxes (Deck) Tecumseh Products Co.

900 North Street Grafton, Wl 53024

Engine Seria l N um ber Location

Specifications

MODEL

ENGINE

Manufacturer/Model Kohler CH20, 2 Cyl.,

Displacement 38.1 cu. in. (624 cc) 44.0 cu. in. (725 cc) HP (@ 3600 RPM) 20.0 25.0 Max. RPM (No Load) 3750 3750 Governed RPM 3600 3600 Max. Torque [ft-lb (N Idle RPM 1200 ± 75 1200 ± 75 Spark Plug Type Champion Spark Plug Gap .030 in. (.76 mm) .030 in. (.76 mm) Crankcase Capacity 2.1 qts (2.0 liters) 2.1 qts (2.0 liters) Crankcase Lubricant API SF, SG, or SH Grade Oil

Fuel Tank Capacity 4.3 Gallons (16.3 liters) 4.3 Gallons (16.3 liters) Fuel Regular Grade Unleaded

Cooling System Capacity Air Cooled Air Cooled

⋅m) @ RPM] 32 (43.4) @ 2500 39.5 (53.6) @ 2400

MT 20.0 HP MT 25.0 HP

Kohler CH25, 2 Cyl.,

Gasoline (Air Cooled)



RC12YC Champion RC12YC

Only with 10W-30 Viscosity

above 0° F (-18° C), or 5W-20 or 5W-30 Viscosity below 32° F (0° C)

Gasoline (87 Oct ane)

Gasoline (Air Cooled)

API SF, SG, or SH Grade Oil Only with 10W-30 Viscosity above 0° F (-18° C), or 5W-20 or 5W-30 Viscosity below 32° F (0° C)

Regular Grade Unleaded Gasoline (87 Octane)

ELECTRICAL SYST EM

Battery 12 Volt, 35AH, 295 CCA 12 Volt, 35AH, 295 CCA Charging System Flywheel Alternator Flywheel Alternator Charging Output 1 5 Amp DC (Regulated) 15 Amp DC (Regulated) System Polarity Negative Ground Negative Ground Ignition Electronic Capacitive

Discharge

Start er 12 Volt Electric Ring-Gear

Type, Solenoid Shift

Interlock Switch Ignition Lockout by Seat

Switch, Transmission Neutral and Blade Clutch

Circuit Breaker Manual Reset (30A) Manual Reset (30A)

TRANSMI SS I ON

Manufacturer/Model Dual Hydrostatic, Eaton

Model 7, Each Wheel Independently Driven

Steering Hand Lever Control /

Individual Wheel

Forward Speed Control Precision Friction Lock Lever,

Cruise Control, with Neutral-Park Position

Electronic Capacitive Discharge

12 Volt Electric Ring-Gear Type, Solenoid Shift

Ignition Lockout by Seat Switch, Transmission Neutral and Blade Clutch

Dual Hydrostatic, Eaton Model 7, Each Wheel Independently Driven

Hand Lever Control / Individual Wheel

Precision Friction Lock Lever, Cruise Control, with Neutral-Park Position

Specifications

MODEL

TRANSMI SS I ON (c on t inue d )

Service Brake Dynamic Braking through

Parking Brake Mechanical Pin Lock in

Neutral Transmission Release by

Final Drive Gear Drive Axle Gear Drive Axle

Transmission Fluid

Factory Servi ce SAE 30W Straight Vi sco sity

Alternate Transmission Fluid Mobil 1 Synthetic Motor Oil

Transmission Fluid Capacity 1 qt (1 liter) 1 qt (1 liter) Transmission Cooling Cooling Fan Mounted on

Ground Travel Speed

Forward m.p.h. (km/h) Reverse m.p.h. (km/h)

MT 20.0 HP MT 25.0 HP

Dynamic Braking through

Hydrostatic Transmission

Transmission Gear

Manual Dump Valve

Motor O il (Mobil DTE 18M Hydraulic Oil Inst all ed at Factory)

(5W30)

Drive Pulley

0-5 (0-8) Infinitely Variable 0-5 (0-8) Infinitely Variable

Hydrostatic Transmission Mechanical Pin Lock in

Transmission Gear Transmission Release by

Manual Dump Valve

SAE 30W Straight Viscosity Motor Oil (Mobil DTE 18M Hydraulic Oil Installed at Factory)

Mobil 1 Synthetic Motor Oil (5W30)

Cooling Fan Mounted on Drive Pu lley

0-5 (0-8) Infinitely Variable 0-5 (0-8) Infinitely Variable

BLADE DRIVE

PTO Shaft Quick Disconnect Rectangular

Shaft with Two High-Speed U-Joints

Blade Spindle Each Blade (2) Moun ts Direct

on Peerless Right Angle Gearbox with Tee Gearbox in Center Connected to PTO Shaft (Complete Geared Drive, Peerless Model 1000 Gearboxes)

Blade Drive Clutch and Brake Manual Belt Tightener Clutch

and Band Brake (Stops Blades within Five (5) Seconds of Disengagement)

Max. Blade Speed [25 in. (64 cm) Blade] @ 3600 RPM Engine

TIRE SIZE

Deck Caster Wheel 2.80/2.50-4 Pneumatic (4-Ply) 2.80/2.50-4 Pneumat ic (4-Ply) Deck Caster Wheel (Optional) 8.25 x 2.75 Semi-Pneumatic 8.25 x 2.75 Semi-Pneumatic Drive 18 x 9.50-8 (4-Ply) 18 x 9.50-8 (4-Ply) Rear (Dual) 13 x 5.00-6 (4-Ply) 13 x 5.00-6 (4-Ply)

2400 RPM [15700 FPM (4785 m/min)]

Quick Disconnect Rectangular Shaft with Two High-Speed U-Joints

Each Blade (2) Mounts Direct on Peerless Right Angle Gearbox with Tee Gearbox in Center Connected to PTO Shaft (Complete Geared Drive, Peerless Model 1000 Gearboxes)

Manual Belt Tightener Clutch and Band Brake (Stops Blades within Five (5) Seconds of Disengagement)

2400 RPM [15700 FPM (4785 m/min)]

Specifications

MODEL

TIRE PRESSURE

Deck Caster Wheel 20 PSI (137 kPa) 20 PSI (137 kPa) Drive 15 PSI (103 kPa) 15 PSI (103 kPa) Rear 20 PSI (137 kPa) 20 PSI (137 kPa)

DIMENSIONS (Tractor and Mower)*

Length 91 in. (231 cm) 91 in. (231 cm) Width 49 in. (124 cm) 49 in. (124 cm) Height 44 in. (1 12 cm) 44 in. (112 cm) Wheel Base (Tractor) 4 2-1/4 in. (107 cm) 42-1/4 in. (107 cm) Tread Width (Tractor) 29-3/4 in. (76 cm) 29-3/4 in. (76 cm)

MOWER DECK

Width of Cut SD/GHS 42 or 48 in. (107 or 122 cm) 42 or 48 in. (107 or 122 cm) Cutting Height 1 to 4 in. (3 to 10 cm) 1 to 4 in. (3 to 10 cm) Height Adjustment 7 Positions - 1/2 in. (1 cm)

Blade Size (Typical)

42 in. (107 cm) SD 22 in. (56 cm)

48 in. (122 cm) GHS 25 in. (64 cm)

Deck Suspension Torsion-Flex Frame with

MT 20.0 HP MT 25.0 HP

7 Positions - 1/2 in. (1 cm) Increment Hitch Pins Installed in Multi-Position Deck Support

2 in. (5 cm) Center Overlap (Two Blades, CW Rotation)

2 in. (5 cm) Center Overlap (Two Blades, Counter Rotate)

Caster Wheels and Counterweight Springs

Increment Hitch Pins Installed

in Multi-Position Deck Support

22 in. (56 cm)

2 in. (5 cm) Center Overlap

(Two Blades, CW Rotation)

25 in. (64 cm)

2 in. (5 cm) Center Overlap

(Two Blades, Counter Rotate)

Torsion-Flex Frame with

Caster Wheels and

Counterweight Springs

CURB WEIGHT (Approximate)

SD Tractor Only 660 lb (299 kg) 665 lb (302 kg) GHS Tractor Only 760 lb (345 kg) 765 lb (347 kg) Tractor and Mower* 965 lb (438 kg) 970 lb (440 kg)

*Dimensions and weight shown are for 48 in. (122 cm) GHS Model (typi cal).

Dimensions for Tractor and Mower with 42 in. (107 cm) deck are:

Length = 88 in. (224 cm)

Width = 43 in. (110 cm) For SD Models, subtract 7 in. (18 cm) from the height. Deck weight for 48 in. (122 cm) Tilt-Up deck = 205 lb (93 kg). Deck sizes range from 42 to 62 in. (107 to 157 cm), with corresponding deck weights ranging from 170 to 300 lb (77 to 136 kg). Optional (9. 5 Bushel) Grass Catcher adds approx. 5 lb (2 kg) and 5 in. (13 cm) in Height

Specifications

MODEL

DRIVE BELTS

Engine PTO Walker P/N 8230 Walker P/N 8230 Jackshaft Drive Gates 3VX355

Ground Drive, Micro-V Walker P/N 7248 Walker P/N 7248 Blower (GHS Model) Gates 3VX280

GHS SYSTEM (Optional)

Blower 4 x 10 x 1/4 in. (10 x 25 x 1 cm)

Blower Brake Band Brake (Works in Combi-

Max. Blower Speed 3 600 RPM 3600 RPM Grass Catcher Capacity 65 Gallons (246 liters)/

Optional Grass Catcher Capacity

Full Signal Oscillat ing Vane Switch

Powerf il

MT 20.0 HP MT 25.0 HP

Gates 3VX355

(or Walker P/N 6231)

(or Walker P/N 7234)

Three-Blade Paddle Wheel (Driven by Mower Engine)

nation with PTO Clutch, Stops Blower within Five (5) Seconds of PTO Disengagement)

7.0 Bushels 76 Gallons (335 liters)/

9.5 Bushels

Mounted on Grass Delivery Spout Triggers Horn Signal

Oscillating Delivery Spout Driven by 12 Volt Electric Gearmotor Spreads Material throughout Interior of Catcher @ 25 Cycles/Minute

(or Walker P/N 6231)

Gates 3VX280 (or Walker P/N 7234)

4 x 10 x 1/4 in. (10 x 25 x 1 cm) Three-Blade Paddle Wheel (Driven by Mower Engine)

Band Brake (Works in Combination with PTO Clutch, Stops Blower withi n Five (5) Seco nds of PTO Disengagement)

65 Gallons (246 liters)/

7.0 Bushels 76 Gallons (335 liters)/

9.5 Bushels Oscillating Vane Switch

Mounted on Grass Delivery Spout Triggers Horn Signal

Oscillating Delivery Spout Driven by 12 Volt Electric Gearmotor Spreads Material throughout Interior of Catcher @ 25 Cycles/Minute

SEAT

FRAME/BODY CONSTRUCTION

Frame All Welded Unitized Steel

Body 14 Gauge Steel 14 Gauge Steel Deck 11 Gauge Steel 11 Gauge Steel GHS Catcher and Chutes Molded Cross-Linked

NOTE: The manufacturer reserves the right to make changes in specifications shown herein at any time without notice or obligation.

Contour-Molded, with Nylon Backed Vinyl Cover and Integral Foam Cushion

Chassis

Polyethylene (UV Stabi l ized)

Contour-Molded, with Nylon Backed Vinyl Cover and Integral Foam Cushion

All Welded Unitized Steel Chassis

Molded Cross-Linked Polyethylene (UV Stabilized)

Component Identification

NOTE: Control Identification

shown in Operating Instructions section.

Catcher Door

Safety Latch

Anti-Scuff

Roller

Catcher Lift /

Dump Handle

Fuel Tank

and Cap

Tu rbine

Precleaner

Grass Handling System

7.0 Bushel Catcher

Tilt-Up

Latch

Spring Clip

Transmission Control Rod

Adjustment Nut (LH)

Deck Support Pins

and Height Adjustment

Hitch Pins

Counterweight Spring

and Protective Cover

Transmission Control Rod

Adjustment Nut (RH)

Deck Support Arms

Deck Lift Handle

(Cutting Height Adjustment)

Footrests

Tilt-Up Hook

Tilt-Up

Deck Handle

Deck

Caster Wheels

Front View an d R ig ht Side View

Component Identification

Instrument Panel

Guard

Instrument Panel Box

(Shock Mounted)

Deck Lift Rod

Left Hand

Drive Wheel

Catcher Door

Gas Spring

Catcher Lift /

Dump Handle

Muffler

Removable Grass

Catcher Screen

(Not Visible)

Tailpipe

Oil Drain

Plug

Catcher Exhaust

Deflector

Catcher

Door

Dump

Plate

Catcher

Door Handle

Oil

Filter

Anti-Scuff

Roller

Tailwheel Fork

and Wheels

Rear View and Left Side View

Component Identification

Donaldson Air Cleaner

(Primary Air Cleaner)

Air Restriction Indicator

(Not Visible)

Air In take Ho s e

(Primary to Secondary)

Fuel Tank

Precleaner

Tube

Jackshaft

PTO Gearbox

Dipstick

Turbine

Precleaner

Air Cleaner

Cover

Air Cleaner

Base P la t e

Fuel Filter

Fuel Pump

Engine Air Cleaner

(Secondary)

Muffler Gras s

Shield

Throttle and

Choke Linkage

Muffler Heat

Shield

Oil Dipstick/Oil Fill

Rubber Bumper

(Catcher Support)

Muffler

20 Amp Fuse

(Starter Solenoid)

GHS Blower

RH Transmission

Lockout Lever

30 Amp

Circuit Breaker

PTO

Clutch Lever

Positive (+)

Battery Cable

Negative (-)

Battery Cable

Neutral Safety

Battery

Top View (Engine Compartment)

Switch

RH Hydrostatic

Transmission

LH Hydrostatic

Transmission

LH Transmission

Lockout Lever

Safety Instructions

Pay particular attention to any information labeled DANGER, WARNING, CAUTION, IMPORTANT, and NOTE in this manual.

When you see the Safety Alert Symbol ( ), read, understand, and follow the in structions. Failure to comply with safety instructions may result in personal injury.

The seriousness or degree of importance of each type of information is defined as follows:

DANGER

An IMMEDIATE hazard that WILL result in severe personal i njury or DEATH, if warning is ignored and proper safety precautions are not taken.

WARNING

A POTENTIAL hazard that COULD result in sev ere pers onal inju ry or DEATH, if w arning is ignored and proper safety precautions are not taken.

Walker Manufacturing cannot predict every potentially dangerous situation. Therefore, items labeled as such in this manual do not cover all conceivable situations. Any person using procedures, tools, or control techniques not recommended by Walker Manufacturing must take full responsibility for safety.

The Walker Rider Lawnmower has been designed with many safety features to protect the operator from personal harm or injury. However , it is necessary for the operator to use safe operating procedures at all times . Failure to follow safety instructions con-

tained in this manual may result in personal injury or dama ge t o equipment or property.

If you have any questions concerning setup, operation, maintenance, or safety, please contact your authorized Walker Mower Dealer or call Walker Manufacturing Company at (970) 221-5614.

BEFORE OPERATING

1. Read and understand the contents of this

Owner’s Manual before starting and operating the machine. Become thoroughly f am iliar

with all ma chine controls and how to stop the machine and disengage the controls quickly. Replacement Owner’s Manuals are available by sending the Model and Serial Number to:

CAUTION

Possible hazards or unsafe practices that MAY result in MOD ERATE per sonal injury or property damage, or machine damage, if warning is ignored and proper safet y precautions are not taken.

IMPORTANT: Identifies mechanical information de-

manding spec ial at tention, s ince it de als wit h the pos sibili ty of damaging a par t or parts of th e m ach i ne.

NOTE: Identifies information worthy of special attention.

Walker Manufacturing Company

5925 East Harmony Road

Fort Collins, CO 80528

2. Never allow children to operate rider mower. Do not allow adults to operate without prope r instructio n.

3. Clear the area to be mowed of any foreign objects which may be picked up and thrown by cutter blades. Pick up all sticks, stones, wire, and any other debris.

4. Keep every one, espec ially ch ildren and pets, a safe distance away from the area being mowed.

Do not mow with bystanders in the area.

5. Do not operate the machine barefoot or wearing sandals, sneakers, tennis shoes, or similar lightweight footwear. Wear substantial protective

footwear.

Safety Instructions

6. Do not wear loose fitting clothing that could get caught in moving parts. Do not operate this machine while wearing shorts; always wear adequate protective cloth ing, including long pants. Wearing safety glasses, safety shoes, and a helmet is advisable and required by some local ordinances and insurance regulations.

7. Prolonged exposure to loud noise can cause impairment or loss of hearing. Operator hearing protection is recommended; particularly for continuous operation of t he GHS M odel due to blower noise level. Wear a suitable hearing protective device, such as earmuffs or earplugs.

8. Keep all protective shields and safety de- vices in place. If a protective shield, safety device, or decal is damaged, unusable, or missing, repair or replace it before operating the machine.

9. Be sure interlock switches are functioning correctly, so the en gine ca nnot be started unless the Forward Speed Control lever is i n the NEUTRAL-PARK position, and the PTO clutch is in the DISE NGAGED position. Also, the engine should stop if the operator lifts off the seat with the PTO clutch in the ENGAGED position.

10. Handle gasoline with care. Gasoline is highly flammable and its vapors are explosive:

a. Use an approved fuel container.

12. The electrical system battery contains sulfuric acid. Avoid any c ontact with skin , eyes, and clothing. Keep the battery and acid out of reach of children.

OPERATING

1. Operate the mower only in daylight or in good artificial light with good visibility of the area being mowed.

2. Sit on the seat when starting the engine and operating the machine. Keep feet on the deck footrests at all times when the tractor is moving and/or mower blades are operating.

3. For a beginning operator, learn to steer (ma-

neuver) the tractor with a slow engine speed before attempting any mowing operation. Be

aware that, with the front mounted mower configuration, the back of the tractor swings to the outside during turns.

4. Remember, for an emergency stop, the forward motion of the tractor can always be stopped by pulling the Forward Spee d Control (FSC) into the NEUTRAL-PARK position.

5. Disenga ge the blade clutch and put the FSC in the NEUTRAL-PARK position before starting the engine (an ignition interlock switch normally prevents starting of the machine i f these controls are in the OPERATING position).

b. Never add fuel to a running engine or hot

engine (allow hot engine to cool several minutes).

c. Keep matches, cigarettes, cigars, pipes,

open flames, or sparks away from the fuel tank and fuel container.

d. Always fill the fuel tank outdoors using care.

Fill to about one inch from the top of the tank. Use a funnel or spout to prevent spilling.

e. Replace the machine fuel cap and container

cap securely and clean up any spilled fuel before starting the engine.

11. Never attempt to make any adjustments while the engine is running, except where specificall y instructed to do so.

6. Do not run the engine in a confined area with- out adequate ventilation. Exhaust fumes are hazardous and can be deadly.

7. Do not carry passengers - maximum seating capacity is one (1) person.

8. Watch for holes, rocks, and roots in the terrain and for other hidden hazards. When mowing tall grass, mow higher than desired to ex pose any hidden obstacles. Then, clean the area and mow to the desired height.

9. Avoid sudden starts or stops. Before backing the machine up, look to the rear to be sure no one is behind the machine. Watch carefully for traffic when crossing or working near roadways.

Safety Instructions

10. Disengage the blade drive when transporting the machine across drives, sidewalks, etc. Ne-

ver raise the mowe r deck while blades are rotating.

11 . The maximum recommended side slope op-

erating angle is 20 degrees or 33% grade.

When operating the machine on a slope, reduce speed and use caution to start, stop, and maneuver. To prevent tipping or loss of control of the machine, avoid sharp turns or sudden changes in direction.

12. Never adjust cutting height with the engine running. Before adjusting cutting height or servicing, disengage the blade clutch (PTO), stop the engine, and rem ove the ignition key. Wait for all movement to stop before getting off the seat.

NOTE: A blade/blower brake should normally stop drive line rotation within five (5) seconds of disengaging the PTO clutch.

13. For side discharge mower decks, do not oper-

ate with the grass d eflec tor ch ute rem ov ed.

Keep the deflector in the lowest possible position.

14. For tractors equipped with tilt-up deck, observe

the following recommendations:

17. In case of a clogged or plugged mower deck

or GHS catching system:

a. Disengage the blade clutch (PTO) and turn

the engine off before leaving the seat.

b. LOOK to make s ure blade drive shaft and

blower drive pulley movement has stopped

before trying to unclog the system. c. Disconnect the spark plug wires. d. Never place hands under the deck or in the

GHS blower - use a stick or similar tool to

remove clogged material.

18. If the cutting bl ades strike a solid o bject or the machine begins to vibrate abnormally, immed i-

ately disengage the blade clutch (PTO), stop the engine, and wait for all moving parts to stop. To prevent accidental starting, discon-

nect the spark plug wires. Thoroughly inspect the mower and repair any damage bef ore restarting the engine and operating the mower. Make sure cutter bl ades are in good condition and blade nuts are torqued to 60 ft-lb (81.3 N

19. Do not touch the engine or muffler while the engi ne is ru nning or immediately after stopping the engine. These areas may be hot enough to cause serious burns.

⋅m).

a. Do not move tractor with deck in tilt-up po-

sition.

b. Never tilt body forward with deck in tilt-up

position.

15. For GHS equipped models, do not operate the

machine with the grass catcher in the DUMP position or with the back door OP EN. Dan-

gerous projectiles may be thrown out of the discharge chute or the back of the grass catcher.

16. For GHS equipped models, use care when closing the grass catcher door . Keep fingers and hands away from the hinge and pinch points when the door is being closed. Also, keep fingers and hands clear of the door frame. The door is held closed with springs and the door may slam shut with considerable force.

20. When leaving the machine unattended, dis-

engage the blade clutch (PTO), stop the engine, and remove the key.

MAINTENANCE

1. To prevent accidental starting of the engine when servicing or adjusting the machine, remove the key from the ign ition switch and disconnect the spark plug wires.

2. To reduce fire hazards, keep the engine free of grass, leaves, excessive grease, and dirt.

3. Keep all nuts, bolts, and screws tight to en sure the machine is in a safe, working condition. Check the blade mounting nuts frequently, making sure they are tight.

Safety Instructions

4. Perform only maintenance instructions de- scrib ed in th is manua l. Unauthorized maintenance operations or machine modifications may result in unsafe operating conditions.

5. If the engine must be running to perform a maintenance adjustment, keep hands, feet, and clothing away from moving parts. Do not wear

jewelry or loose clothing.

6. Al ways u se the proper en gine service manual when working on the engine . Unautho-

rized maintenance operations or mo difications to the engine may result in unsafe operating conditions.

7. Altering the equipment or engine in any manner which adversely affects its operation, performance, durability, or use will VOID the warran- ty and may cause hazardous conditions.

8. Never attempt to disconnect any safety devices or defeat the purpose of these safety devices.

9. Do not change the engine governor settings or overspeed the engine. The governor has been factory-set for maximum-safe engine ope rating speed.

d. Disconnect both battery cables before

unplugging any wiring connectors or making repairs on the electrical system.

IMPORT ANT: Keep all applicable manuals immediately accessible to anyone who may operate or service this machine.

10. Use genuine factory replacement parts. Substitute parts may result in product malfunction and possible injury to the operator and/or others.

11 . Use care w hen charging the battery or per-

forming maintenance on the battery and electrical system:

a. Make sure the battery charger is unplugged

before connecting or disconnecting cables to the battery.

b. Charge the battery in a well-ventilated

space, so gases produced whil e charging can dissipate. Make sure the battery vents in the caps are open.

c. Keep s parks, flames, and smoking materi-

als away from the battery at all times. To avoid sparks, use care when removing battery cables from posts.

Safety Instructions

SAFETY, CONTROL, AND INSTRUCTION DECALS

Safety, Control, and Instruction Decals are installed on the machine;

if any are missing, illegible, or damaged, a replacement should be ordered and installed before

putting the machine into operation. The Decal Pa rt Number is l isted below and in the Parts Manual.

Each End of Mower Deck (5808)

Adjacent to Blower Discharge Chute

through Body (5804)

SD Deck Discharge Shield (5848)

On Body Adjacent to Clutch

Control Lever (5806)

Right Si de of Fro nt Body, Below

Front Body Latch Release (7820)

Hydrostat Oil

Front Body Adjacent to

RH Steering Lever (7818)

Engine Shroud (5855)

Rear of Grass Catcher Exhaust Screen (5869)

Rear Cross Member of Front Body (8825)

Reservoir (5810)

Safety Instructions

SAFETY, CONTROL, AND INSTRUCTION DECALS

Safety, Control, and Instruction Decals are installed on the machine;

if any are missing, illegible, or damaged, a replacement should be ordered and i nstalled before

putting the machine into operation. The Decal Pa rt Number is listed below and in the Parts Manual.

Jackshaft Support Adjacent

to Dipstick (7827)

Deck Carrier Frame (8647)

Deck Gearbox Cover (5807-1)

Deck Carrier Frame (5865)

Top of Blower Housing (5819)

Catcher Door Hinge Bar,

LH and RH Sides (5868)

Gear Axle (5810-1)

On Engine (6810)

Catcher Safety Latch,

RH Side (5874)

Right Side, Below Operator Seat (7809)

Left Side of Operator Seat (8819)

Left Side of Operator Seat (7819)

Deck Carrier Frame (8653)

Instrument Panel (8823)

Fender, RH Side (7802)

Assembly Instructions

SETUP INSTRUCTIO N S

Walker Mowers are shipped partially assembled. After uncrating the tractor and mower de ck, initial setup is required.

NOTE: During the proc es s of unp ac ki ng, any d amaged or missing parts should be noted and reported to the delivering carrier im mediately (put in writing within 15 days). The carrier will provide directions for proceeding with a claim to receive compensation for damage.

Tire Installation (Tractor)

• Install the drive tires using the eight (8) lug bolts

that are supplied with the owner’s packet of materials. Drive tires are 18 x 9.50-8, 4-ply; rear tires are 13 x 5.00-6, 4-ply.

• Check and adjust the inflation of the tires. The

tire inflation recommendations are:

Drive = 15 PSI (103 kPa) Rear = 20 PSI (137 kPa)

Battery Service

Raise front mower body up for battery access (refer to

Front Body Latch Release

tions). Check the battery for electrolyte level and charge. The electrolyte level should be at the bottom of the vent wells [1/4 to 1/2 in. (6 to 13 mm) above plates]. If the specific gravity is less than

1.225, the battery needs charging. If the battery

has been shipped dry, or is wet but needs service, refer to the following instructions.

Wet Battery Service

If the battery has been shipped wet, but the electrolyte level is low or the battery needs to be charged then:

1. Fill each battery cell with dri nking water to the bottom of the vent wells.

2. Charge battery. Refer to this section .

in Oper ating I nstruc -

Battery Charging

Dry Battery Service

DANGER

Activating a battery can be dangerous. The battery should be taken to a reliable service station, battery store, or power equipment dealer where a tra ined techni cian can activate the battery safely. DO NOT attempt to activate the battery unless you are experienced in battery service work. The following activation and charging instructions are provided for use by a trained battery technician.

DANGER

Battery electrolyte is a poisonous and corrosive sulfuric acid solution.

• Avoid spillage and contact with skin,

eyes, and clothing - causes severe burns.

• To prevent accidents, wear safety gog-

gles and ru bber gloves when working with electrolyte.

• Neutralize acid spills with baking soda

and water solution.

T o fill (activate) battery with electrolyte (if battery has been shipped dry):

1. Remove the batte ry hold do wn bar, disconnect the battery cables and lift th e batte ry out of the tray.

IMPORTANT: Battery must be removed from the mower before filling with electrolyte.

IMPORTANT: Obtain and use only battery grade sulfuric acid electrolyte with a 1.265 specific gravity to activa te the ba ttery. DO NOT use water or any other liq ui d duri ng ini t i al act ivation.

2. Remove the filler caps and carefully fill each cell until the electrolyte is just above the plates.

Assembly Instructions

3. After the battery is filled with electrolyte, replace the filler caps and charge the battery. Refer to

Battery Charging

DANGER

WARNING

Make sure the battery cap vents are open. Improper venting of the battery COULD cause a battery explosion.

BATTERIES PRODUCE EXPLOSIVE GASES

• Charge the battery in a well-ventilated

area, so that gases produced while charging can dis sipat e.

• Keep sparks, flames, and smoking mate-

rials away from the battery at all times.

• Make sure the battery cap vents are

open after the battery is filled with acid (check manifold vent on each cap).

• Make sure the battery charger is unplug-

ged before connecting or disconnecting cables to the battery.

1. Charge the battery at 15 a mps for 10 min utes. DO NOT exceed 20 amps maximum recommended charging rate. Charge until specific gravity is at least 1.250. Total charging time should not exceed one (1) hour.

2. After charging the battery , adjust t he el ectrolyte level to the bottom of the vent wells [1/4 to 1/2 in. (6 to 13 mm) above the plates].

IMPORTANT: DO NOT overfill the battery. Electrolyte will overflow through the vented caps onto parts of the machine and WILL result in severe corrosion.

Battery Clamp

Secured by

Wing Nut(s)

(+) Battery Cable

Connection

Battery Installation

Mower Deck Assembly

Deck Caster Wheels Installation

1. Remove the bolt, nut, axle spacer tube, and spacer washers from e ach deck caster wheel fork.

NOTE: Spacer washers are used only when the optional semi-pneumatic deck wheels (8.25 x 2.75) are installed.

2. Fit the axle spacer tube through the wheel hub, position the spacer washer on each s id e of the hub (if used), and fit the assembly into the wheel fork.

3. Install battery.

Battery Installation

Install the battery in the mower as shown in Battery Installation photo. Connect the positive and negative cables to the proper battery terminal (red cable and boot connects to the Positive (+) terminal). Slide the rubber boot up and o ver the batte ry post, making sure it covers t he post completely to p re-

vent an electrical short.

3. Insert the 3/8-16 x 4-1/2 in. bolt through the wheel fork with the bolt head to the outside and install the 3/8-16 in. Keps nut.

4. Tighten the bolt and nut until the axle spacer tube bottoms against the inside of the wheel fork (will not tu rn) while the wheel an d spacer washers (if used) spin freely without binding.

Assembly Instructions

Grease Fitting

Locations

Spacer Washer

Axle Spacer Tube

Deck Caster Wheel Installation

NOTE: If semi-pneumatic wh eels are i nst alled ,

make sure the spacer washers fit over the spac er tube and are not caught between the fork and the end of the tube. The washers shoul d move freely on the axle spacer tube.

5. Grease the caster wheel bearings and caster pivot bearings - one grease fitting for each wheel and each pivot.

Deck Discharge Shield Installation (Side Discharge Models Only)

Attach the deck side discharge shield by posit ioning the shield hinge lug in front of the deck mount and fastening with two 3/8-16 x 1-1/4 in. bolts, 3/8-16 ESNA nuts, and 3/8 in. wave spring washers. The wave washers fit between the two hinging surfaces. Tighten the nuts until the shield moves freely but is not loose.

WARNING

DO NOT operate the m achine witho ut th e grass deflector chute attached and in the lowest possible position.

Attach Shiel d

Deck Discharge Chute Installation (GHS Rear Discharge Models Only)

Mount the discharge chute hinge on top of the deck discharge opening using the 1 /4-20 x 1 /2 in. socket button head bolt and 1/4-20 ESNA nut. Position the bolt with the head inside of the chute and the nut on the outside.

Carrier Frame

Tube Sockets

Attach Chute

Attach G u ard

Nut on Top

Discharge Chute and PTO Shaft Guard

Installation on Rear Discharge Deck

Discharge Shield Installation

on Side Discharge Deck

PTO Shaft Guard Installation

Position the shaft guard as shown and mount with two 1/4-20 x 1/2 in. bolts.

Mower Deck lnstallation on Tractor

Deck Install ation

1. Lightly grease each deck support arm (2) on the tractor. Refer to Mower Deck Installation pho- to on next page for location of deck support arm.

2. Engage the deck carrier frame tube sockets on the tractor support arms (refer to Discharge

Chute and PTO Shaft Guard Installation

photo for socket location). Slide the dec k onto the support arms: all the way if SD equipped model, approximately 3 in. (76 mm) if GHS equipped model.

Assembly Instructions

NOTE: When installing the DSD52 or DSD62 Mower deck, make sure to retract the dolly wheel after mounting the deck on the tract or.

3. If the deck is rear discharge (GHS equipped model), the rear discharge chute will need to be aligned and connected to the blower inlet during the last 2 in. (51 mm) of slid e act ion on th e support arms.

NOTE: Raising the mower body may be helpful in fitting and guiding the deck chute into the blower.

4. Install the hitch pin through the hole on the end of each supp ort arm to lock the deck in place (refer to Deck Counterweight Spring Installa- tion photo). Two (2) hitch pins are included in the owner’s packet of materials.

5. Connect the mower deck PTO drive shaft assembly to the tractor with the splined quick disconnect coupler. This coupler simplifies shaft alignment and installation.

a. Use the arrows on the shaft and tube to

align and slide the PTO quick coupler onto the deck rectangular shaft.

b. Reaching under the tractor, pull the ring

back on the coupler, slide onto the spline shaft on the tractor, and release the ring.

Spring-Loaded Coupler Ring

In Fully Forward Position

Coupler Rin g “L oc ked” Position

6. Raise the front mower body (instead of lifting the front of deck) and clip the counterweight springs to the receptacle on front of body. Lower the front body to tension the springs. (Refer to Deck Counterweight Spring Instal- lation Photo.)

Grease Deck

Support Arms

IMPORTANT: To prevent damage to the mower, make sure the PTO shaft assembly is securely locked on the tractor, with the locking balls fully seated in the groove and the ring in the full forward position (refer to the Coupler Ring “Locked” Position photo). After installation, pull on the shaft to check for security .

Pull Back Spring-Loaded

Coupler Ring

Installing PTO Quick Coupler

PTO Connection

Arrows on Shaft and Tube

(used to align when sliding together)

Mower Deck Installation (PTO Shaft Connection)

7. With the counterweight springs connected, the weight on the deck caster wheels should be 15 to 25 Ib (6.8 to 11.3 kg). Check this weight by lifting on the front of the deck carrier frame. If required, the spring tension can be adjusted by tightening or loosening the elastic stop nuts located underneath the lower spring hook. Refer to Deck Counterweig ht Spring Inst alla- tion photo.

Assembly Instructions

NOTE: A block of wood cut 4 in . (102 mm) high is a convenient gauge to measure blade height above ground during the leveling process.

Spring Te nsion Ad justment

Nut Located Under Lower

Spring Hook (Not Visible)

Counterweight Springs Clip

Onto Body With Forward

Body Tilted Up

Hitch Pins

Lock Deck On

Support Arms

Deck Counterweight Spring Installation

Deck Leveling

1. Position mower on a smooth, level surface. Set the cutting height to the high est position - 4 in. (102 mm) - for easy access under the deck to measure blade height. Re fer to ADJUSTING

CUTTING HEIGHT in Operating Instructions.

WARNING

The machi ne must be shut off du rin g t hi s procedure.

2. Check the side-to-si de level. Rotate each blade sideways and measure the distance from blade

tip to ground on each side. If measurements vary more than 1/8 in. (3 mm), add a washer shim under the deck support pins on the low side to level the deck.

3. Check the f ront-to-rear level. Rotate the blades to po int forw ard. Measure the distance from blade tip to ground on the front and rea r. The rear of the blade should be 1/8 to 1/4 in. (3 to 6 mm) higher than the front of the blade; shim the rear (or front) deck support pins equally to achieve at least 1/8 in. (3 mm) difference.

NOTE: The mower deck and support frame are jig wel ded; wit hin nor mal toler ances, very lit tle, if any, shimming should be required to level the deck. Tire pressure will influence the levelness of the deck. Check the tire pressure as a possible cause of the deck not being level.

4 in. (102 mm)

Wood Block

Should not vary more

than 1/8 in. (3 mm)

side-to-side

Deck Leveling

Should be 1/8 in. (3 mm)

to 1/4 in. (6 mm) higher

at the rear of the blade

4 in. (102 mm)

Wood Block

Assembly Instructions

PREOPERATING CHECKLIST

Before operating the mower for the first time, and as a routine before daily operations, it is important to make sure the mower is properly prepared and ready for operation. The following is a list of items to be checked. (For a mower with frequent operation, some of these items will not need to be checked every day, but the operator should be aware of the condition of each.)

For proper fuels and lubricants refer to Specifica-

tions.

FI LL FU E L TANK

Fill the fuel tank using clean, fresh automotive grade unleaded gasoline (87 octane rating mini- mum).

DANGER

Handle gasoline with care. Gasoline is highly flammable and its vapors are explosive. Use safe refueling procedures:

• DO NOT fill fuel tank with the engine run-

ning.

• If the engine is hot, allow to cool before

refueling.

IMPORT ANT: DO NOT mix oil with gasoline. Al- ways use fresh, automotive grade gasoline. DO NOT use premium, white, or high-test gasoline. DO NOT use additives, such as carburetor cleaners, de-

icers, or moisture removing agents. DO NOT use gasoline blended with methyl alcohol.

CHECK ENGINE CRANKCASE OIL LEVE L

Check the engine crankcase oil level before use and after each 5 hours of cont inuou s operati on. Ref er to LUBRICATION for

Oil Level

in Maintenance Instructions.

CHECK AND SERVICE ENGINE AIR CLEAN-

ER SYSTEM

Checking Engine Crankcase

• Check air restriction gauge to make sure there is

no red indication showing.

• Check condition, cleanliness, and security of the

complete air cleaner sy stem (clean primary air filte r every 100 hours). For detailed proce- dures, refer to CLEANING the Engine Air Cleaner System in Main ten a nce Instru ct i on s .

ADJUST CARBURETOR (Initial S tart-up Only)

Refer to ADJUSTMENTS of Carburetor in Mainte- nance Instructions.

CHECK ENGINE COOLING SYSTEM

• Use an approved fuel container .

• Fue l the mower outdoo rs.

• DO NOT smoke while refueling.

• Avoid spilling fuel; use a funnel or

spout.

• DO NOT overfill the fuel tank; fill up to

about 1 in. (25 mm) below the top of tank.

IMPORTANT: DO NOT perm it dirt or other foreign

matter to enter the fuel tank. Wipe dirt from around the filler cap before removing. Use a clean fuel storage container and funnel.

Check that the engine cooli ng air intake screen is free of obstruction by grass clippings or d ebris and clean if required. Also, cylinder head cooling fins should be inspected and cleaned if any build-up of debris is noted [remove two (2) cylinder hea d access panels to inspect and clean].

Check performance of the cooling system by starting the engine, holding a hand adjacent to the cylinder heads, and feeling the cooling airflow.

DANGER

Make sure to keep hands clear of exhaust pipe, muffler, and moving parts when checking airflow.

Assembly Instructions

C H ECK GEAR AX L E OIL LEVE L

Refer to Gear Axle Lubrication in Maintenance In- structions.

INSPECT FOUR (4) DRIVE BELTS

Engine PTO Drive, Jackshaft Drive, Hydrostatic Ground Drive, and GHS Blower Drive (if equipped).

CHECK HYDROSTATIC TRANSMISSION OIL

LEVEL

Refer to LUBRICATION for

Transmission Fluid

tions.

CH ECK BATTERY ELECTROLYTE LEVEL

Refer to CHECKING/SERVICING the Battery in Maintenance Instructions.

CHECK FUNCTIONS OF INSTRUMENT PANEL

AND WARNING HORN

Turn the ignition key to the RUN position. Voltmeter, Oil Pressure Light, and Warning Horn should all operate, indicating normal function.

CHECK TIRE PRESSURE

Deck Caster Wheel = 20 PSI (137 kPa) Drive = 15 PSI (103 kPa) Rear = 20 PSI (137 kPa)

Level

Checking Hydrostatic

in Maintenance Instruc-

Counterweight

Spring Clip

Deck Lift

Rod

Body

Bracket

Deck Secured in UP Position (Non-Tilting)

DANGER

Never operate c utter blades w ith deck in raised position because it is hazardous.

If equipped, the tilt-up deck can be secured in the raised position by unlocking the deck lock levers on each side of the carrier frame and inserting the deck hook into the tilt-up latch on the tractor body . Before operating the tractor, make sure to re-engage the deck lock levers after lowering th e deck to the normal operating position.

CHECK AND CLEAN GRASS BUILDUP UN-

DERNEATH MOWER DECK (and inside GHS blower, if equipped)

Refer to CLEANING the GHS Blower in Mainte- nance In st ruction s for blower cleaning information.

NOTE: Mower deck is secured in raised position for cleaning and changing blad es by hookin g the deck lift rod into the body bracket below the counterweight spring clip. The rod is hinged and is stowed along the footrest of the deck carrier frame. A hitch pin on the end of the rod is used to secure it in pl ace with the deck raised.

Tilt-Up Latch

Tilt-Up Hook

on Deck

Deck Secured in TILT-UP Position

Tilt-Up Latch

Deck Lock Lever

Assembly Instructions

CAUTION

Do not operate machine with deck tilt-up pivot joint unlocked.

DANGER

Do not operate the mower with deck in tiltup position. Do not move the tractor with the deck in the tilt-up position.

CHECK MOWER BLADE CONDITION, SHARP-

NESS, AND SECURITY OF MOUNTING

The blade mounting nut should be tightened to 60 ft-lb (81.3 N⋅m). If blade sharpening is required, refer to CHECKING/SERVICING for Sharpen Mower Blades in Maintenance Instructions.

ADJUST MOWER CUTTING HEIGHT, IF RE-

QUIRED

Position the hitch pins in the four deck support pins.

Refer to the “Cutting Hei ght Adjustment” decal on the deck gearbox cover.

PERFORM ANY ADDITIONAL PROCEDURES

called for on the MAINTENANCE SCHEDULE CHART in Maintenance Instructions.

Operating Instructions

CONTROL IDENTIFICATION, LOCATION, AND FUNCTION

Operating Controls

CAUTION

Before operating the mo wer, become familiar with the location and function of all operator controls. Knowing the location, function, and operation of these controls is important for safe and efficient oper ation of the mower.

Engine Choke

The choke control lever (black knob) is located on the left side of the seat. To st art a cold engine, move the choke control forward to the ON position. After engine starts, move the choke control toward the OFF position, keepi ng enough choke to allow the engine to run smoothly as it warms up. As soon as possible, move the choke to the OFF position. A warm engine requires little or no choke for starting.

IMPORTANT: Make sure the choke is in the OFF position during normal engine operation; running with the choke in the ON po sition CAN damage the engine.

Parking Brake

Front Body

Latch Release

Forward Speed Control

(FSC)

Blade Clutch (PTO)

Steering Levers

Operating Controls

Operating Instructions

Choke Throttle

Steering Levers

Each drive wheel is controlled by its own independent steering lever, for both steering function and FORWARD/REVERSE motion. The FSC lever sets the maximum forward speed, and also sets the forward position of the steering levers. The steering levers operate only with a backward pulling movement of the lever, which causes the drive wheel for that lever to first slow down, stop, and then reverse with a fu ll backward l ever stroke. The levers are released to the FORW ARD position for “straight-

ahead” ground travel.

Choke and Throttle Location

Engine Throttle

The throttle control lever (red knob) is located on the left side of the seat and is used to control engine speed. Moving the lever forward to w a r d th e FAST position incr eases eng ine speed; moving it back- ward toward the IDLE position decreases engine speed.

Forward Speed Control (FSC)

Forward Speed Control (FSC) has two functions: One is to set forward travel speed, and the other is to establish the NEUTRAL-PARK position. When the FSC lever is moved into the FORWARD posi- tion, a friction lock holds any forward speed setting from 0 to 5 mph (0 to 8 km/h). The ground speed is proportional to the lever position; the further the lever is advanced forward, the faster the tractor moves. It is not necessary to hold the FSC in position since the friction lock maintains the selected lever position. Pulling back on the steering levers overrides the FSC setting and slows or st ops forward travel. Releasing the steering levers allows the tractor to resume forward travel at the speed set by the FSC lever. T o stop and park the machine, the FSC lever is moved backward to the NEUTRAL-

PARK position.

NOTE: Pushing forward on the steering levers will

not cause any change in tractor motion - there will be no steering lever reaction and there will be no machine damage.

Blade Clutch (PTO)

The blade clutch lever has two positions. Pulling the lever UP en gages the PTO that drives the mower blades. Pushing the lever DOWN d isengages the PTO and engages the blade brake.

NOTE: On GHS equipped models, the Powerfil

motor and Grass-Pak® full signal switch are activated by engaging the blade clutch. Refer to Using the GHS Catcher in this section for a complete description of GHS operation.

Parking Brake

The parking brake functions by locking a pin into the hydrostatic transmission pinion gear teeth. Moving the le ver FORWARD engages the parking brake; moving the lever BACKWARD releases the brake.

IMPORT ANT: Stop the tractor completely before engaging the parking brake. The parking brake uses a positive mechanical lock similar to the PARK po- sition on an autom otive automatic t ransmission. If the tractor is moving when the brake is eng aged, it will result in sudden stoppage a nd pos sibl e internal damage to the axle drive.

NOTE: If pressure on the parking brake pin (e.g. parked on a hill) m ak es i t impos sible to release the parking brake with the parking brake lever, move the mower gently forward or backward to release the pin.

Operating Instructions

Front Body Latch Release

The front portion of the tractor body hinges forward for maintenance access and is latched down in the OPERATING position. To raise the body, move the latch release forward.

Front Body

Latch Release

Front Bo dy La tc h Re lease

Transmission Lockout Levers

The transmission lockout levers disengage the hy drostatic transmissons. By lifting the lever on top of the transmission and locking it into place with the lockout cam, the hydros tatic transmiss ions are released to permit freewheeling. By releasing the cam and lowe ring the lever, the transmissions are engaged for normal operation. The transmission lever in the LOCKOUT position is used to enable moving the machine without the engine running (e.g., for service). Refer to TRANSMISSION LOCKOUT in this section for operating instructions.

NOTE: The transmission plunger on the side of the transmission case (activated by the LOCKOUT LE- VER) must be completely released during operation of the mower, otherwise operation of t he transmission will be erratic.

Optional Cold Start Lever (Jackshaft Drive Belt Release)

The cold start lever is used for starting the machine

in cold weather [below 40° F (4° C)]. Pulling the lever UP dise ngages the jacks haf t drive belt. When the jackshaft drive belt is released, the hydrostatic transmissions are removed from the engine starter cranking load.

Cold Start Lever

Disengaged

Optional Cold Start Lever

Normal Operating Position

Cold Start Lever

Engaged

Lockout

Levers

Transmission

Plunger

Optional Cold Start Lever

Lockout Lever Location

Cold Start Position

Operating Instructions

The Forward Speed Control also Establishes the Neutral-Park Position of the Steering Levers LEFT WHEEL

STEERING LEVER

RIGHT WHEEL

STEERING LEVER

FORWARD SPEED

CONTROL LEVER (FSC)

Forward Position

(No Control Change)

Neutral-Park

Position

Reverse Drive

Wheel Motion

Position

Full Forward

Ground Speed

Position

Intermediate

Ground Speed

Position

Neutral-Park

Position

Disengaged

Position

Engaged

Position

Fast

Throttle

Position

Idle

Position

BLADE CLUTCH (PTO)

Pull Up to Engage

Engaged

ON Position

OFF Position

CHOKETHROTTLE

Operating Controls (Top View from Drivers Point of View)

Position

PARKING

BRAKE

Disengaged

Position

Operating Instructions

Instrume nt P ane l

This illustration shows the configuration of the switches and indicators located on the instrument panel.

Hourmeter Voltmeter

Light Switch

(Optional)

Oil Pressure

Warning Light

Over Temperature

Warning Light

Warning

Horn

Ignition

Switch

Instrument Pa ne l

Operating Instructions

Hourmeter

The hourmeter displays operating time accumulated while the ignition switch is in the ON position.

Voltmeter

The voltmeter displays battery and charging system voltage. An indication of low or high voltage (below

11.5 volts or above 15.5 volts) indicates an electri- cal system failure. The cause of the failure should be determined and corrected.

Oil Pressure Warning Light

The oil pressure warnin g li ght ind icates that engin e oil pressure is below the safe operating range [below 3 to 5 PSI (21 to 34 kPa)]. This light (and warning horn) will come on when the ignition is turned ON, but should go off after th e eng ine is s tarted. I f the l ight fails to come on when the ignition switch is turned ON, it could indicate a burned out bulb. If the light comes on during engine o peration, st op the engine imm ediately and correct the source of the problem before further engine operation.

Ignition Switch

The ignition switch is used to start and stop the engine. The switch has three positions: “O” is the OFF position, RUN is the position the key returns to after starting, and “S” is the START position. When starting the engine, turn the key clockwise to the “S” position. Do not hold the key in the “S” position longer than 10 seconds. If the engine does not start, return the key to the “O” position for at least 60 seconds before making a restart attemp t. Prolonged cranking can damage the starter motor and shorten battery life. Release the key when the engine starts, and it will return to the “RUN” position. To stop the engine, rotate the key counterclockwise to the “O” position.

OFF

IMPORTANT: Continued operation of the engine with an illu minated oil pre ssure warning li ght MAY cause severe engine damage (if a low oil pressure condition exists).

Over Temperature Warning Light

The over temperature warning light indicates that engine oil temperature and/or cylinder head temperature are above the safe operating limit and the en-

gine is ov erhea ting [above 3 05° F (152° C) oil or 450° F (232° C) cylinder head ]. If this light comes on, there may be a problem with:

• Engine cooling system (material pack ed into cyl-

inder head cooling fins, clogged air int ake screen)

• Low oil level in crankcase

Stop the engine and correct the source of the problem before further operation.

IMPORTANT: Continued operation of the engine with an illuminated over tempe rature warnin g light MAY cause severe engine damage (if a high oil temperature or head temperature condition exists).

START

Ignit ion Swit c h

Light Switch (For Optional Lights)

Operates headlights (when installed).

Warning Horn

The warning horn sounds t o alert t he operator that an unsafe engine condition is being indicated when engine temperature is too high or engine oil pressure is too low. If the horn sounds, check the indicator lights and correct the problem before further operation.

Operating Instructions

STARTING THE ENGINE

CAUTION

Before operating the mower, read and understand all Safety Instructions and Operat- ing Instructions.

WARNING

NEVER run the engine in an enclosed or poorly ventilated area. Engine exhaust contains carbon monoxide, an odorless and deadly gas.

1. Before attempting to start the engine, make sure the operator is in the seat, the Forward Speed Control is in NEUTRAL-PARK position, and the blade clutch and parking brake are DISENGAGED.

Cold Start

Lever Engaged

Optional Cold Start Lever

2. Move the choke lever to the ON position and move the throttle 1/4 to 1/2 open (toward FAST). Turn the ignition s witch t o the S TART position to start the engine. Release the key to

RUN position as soon as the engine starts.

NOTE: Release parking brak e to prev ent extra

load on the starter if the transmission neutral is slightly out of adjustment.

CAUTION

A safety interlock switch system PREVENTS CRANKING the engine with either the Forward Speed Control or the b lade clutch ( PTO) ou t of ne utra l. If t he eng ine cranks otherwise, the safety system is not working and should be repaired or adjusted before operating the mower. DO NOT disconnect safety switches; they are

for the operator’s protection.

NOTE: For s tarting in cold weather [below 40° F (4° C)], use the optional cold start lever to release the jackshaft drive belt and remove the hydros tatic transmission from t he starter cranking load. After the engine has b een s tarted and warmed up, lower the lever to re-engage the jackshaft drive belt.

NOTE: The choke may not be required if the engine is warm.

IMPORTANT: If the engine fails to start after approximately 10 seconds of cranking, the engine should be checked before furt her cranking. Turn the key to the OFF position and allow a 60 second cool-down period between starting attempts. Failure to follow these guidelines can damage the starter motor and shorten battery life.

3. After the engine starts, make sure the oil pressure light goes off. If not, stop the engine immediately and find the cause of the problem. Make sure the oil pressure light is off prior to engaging the mower blades and beginning operation.

4. Gradually move the choke to the OFF position, keeping enough cho ke on to allow the engine to run smoothly as it warms up. As soon as possible, move the choke to the OFF position.

Operating Instructions

IMPORTANT: M ake sure the chok e is in the OFF position during normal engine operation; running with the choke in the ON position CAN damage the engine.

ADJUSTING GROUND SPEED AND STEERING IMPORTANT: If the DSD52 or DSD62 Mower

deck is installed on the tractor, make sure the dolly wheel is retracted BEFORE moving.

CAUTION

Learn to START, STOP, and MANEUVER the mower in a large, open area.

If the operator has not operated a machine with LEVER STEERING OR DUAL HYDROSTATIC TRANSMISSIONS, steering and ground operation should be learned and practiced until the operator is completely comfortable handling the machine BEFORE ATTEMPTING TO MOW.

DANGER

Keep feet on foo trests all times w hen th e machine is moving.

Beginning Recommendations are: ♦ Learn operation of the mower in an open

area away from buildings, fences, and ob structi ons. Learn ope ration on f lat ground BEFORE operating on slopes.

♦ Start maneuvering the mower with SLOW engine speed and SLOW Forward Speed Control setting until familiar with all operating characteristics.

♦ Remember it is not necessary to hold the steering levers forward (a unique Walker feature); always PULL on the levers for steering or for reverse motion of the mower.

♦ Learn to operate the mower with your left hand on the s teering levers and right h and on Forward Speed Control. The use of two hands on the steering levers tends to cause overcontrol.

♦ Learn to operate the steering lever s with smooth action. Jerky movements are hard on the transmission and lawn. For sharp turns, do not allow the inside wheel to stop and twist on the grass. Pull the steering lever controlling the inside wheel into reverse

for a smooth “ rolling” turn (one wh eel rolling forward while the other rolls back ward ).

1. Move the FSC out of NEUTRAL-PARK position to the desired forward speed. DO NOT hold forward on steering levers. It i s not necess ary to hold the FSC lever in position since a friction lock maintains the selected lever position (and forward travel speed).

NOTE: If the FSC lever will not stay in the selected position, the friction lock needs to be adjusted. Refer to ADJUST MENTS of Forward

Speed Control Friction Lock in Maintenance Instructions.

2. Steer by pulling the lever on the side of desired direction of turn, e.g. , pull the LH le ver to turn left. To minim ize the p ossib ility o f overc ontr ol, use only one hand on both steering levers.

♦ Practice maneuvering the mower until you can make it go exactl y where you are aiming.

♦ Remember, for an emergency stop, or in case of loss of control, machine m ovement can always be stopped quickly by pulling the Forward Speed Control into the NEUTRAL-PARK position.

Operating Instructions

Pull Steering

Levers With

Left Hand

Forward Speed Control

(FSC)

Keep Feet On Footrest

When Moving

Correct Operator Hand Position

on the Controls

3. Reverse direction of the mower by pulling both levers backward.

NOTE: Smooth action on the steering levers will produce smooth mower ope ration. Remember to keep the engine and ground speed slow until learning the control response.

4. The FSC may be adjusted forward for faster ground speed and ba ckward for slower ground speed. When mowing, ground speed should be adjusted to match the load on the cutter blades, i.e., as the engine pul ls down in he avy cutting, pull back on the FSC lever t o reduce ground speed. Adjusting ground speed helps maintain a balance between engine power and blade speed for high-quality cutting action.

5. Stop ground travel by pulling both steering levers backward to the NEUTRAL position (tractor not moving) and then moving the FSC lever to the NEUTRAL-PARK posit ion.

NOTE: If the tractor creeps forward or backward with the FSC lever in the NEUTRAL-P ARK position, the transmission control needs to be adjusted. Refer to ADJUSTMENTS of Trans-

mission Control in Maintenan ce Instru ct io ns .

ENGAGING THE MOWER

1. Set the engine throttle at about 1/3 speed. Do

not attempt to engage the blade clutch at high engine speeds. This will dras tical ly sho rt-

en drive belt life. Use only moderate engine speed when engaging the blade clutch.

2. Pull the blade clutch lever SLOWLY up to en- gage the mower blades.

CAUTION

A safety interlock switch (seat switch) will cause the engine to stop if the blade clutch is engaged an d the operator i s no t in the seat. The function of this switch should be checke d by the operator raising off the seat and engaging the blade clutch; the engine should stop. If the switch is not working, it should be repaired or replaced before operating the mower. DO NOT disconnect the safety switches; they are for the operator ’s protection.

IMPORTANT: DO NOT engage the blade clutch

when transporting the mower across drives, sidewalks, loose materials, etc. DO NOT engage the

blade clutch with the PTO shaft disconnected

(the mower deck removed from tractor).

CAUTION

If the cutting blades strike a stationary object while mowing, stop the mower immediately, disconnect the spark plug wires, lift the deck, and inspect the deck and blades thoroughly for damage. Make sure that the blade timing has not been disturbed (the blades should be at 90 degrees to each other). Refer to REPLACING/REPAIRING the Blade Overload Shear Bolts in Maintenance Instructions if blades are out of time. Also, make sure the blade retaining nuts are torqued to 60 ft-lb (81.3 N⋅m).

Operating Instructions

Engaged

Position

Blade Clut ch E ngaged

IMPORTANT: DO NOT disengage the blade

clutch with high engine speed (above 1/2 throttle) since the bra ke action on the bl ade dri ve will cause premature wear of the brak e band.

WARNING

A brake stops the cutter blades (and blower on GHS equipped models) from freewheeling within five (5) seconds after disengaging the clutch. If the brake system malfunctions and the blades do not stop within five (5) seconds, the brake should be adjusted or repaired before operating the mower. Refer to ADJUSTMENTS of Blade Clutch (PTO) in Maintenance Instructions.

4. Turn the ignition switch OFF. When stopping the engine, do not reduce the throttle below 1/2 speed. Since the engine is equipped with a shutdown solenoid, stopping at low idle may cause engine run-on or backfiring.

Disengaged

Position

Blade Clutch Disengaged

STOPPING THE MACHINE

1. Slow the engine to a fast idle; put the throttle in the 1/2 throttle position.

2. Pull the steering levers to the NEUTRAL position and then mo ve t he F SC lever b ac kward t o the NEUTRAL-PARK position.

3. Disengage the blade clutch.

WARNING

Remove the key from the ignition switch when leaving the mower unattended. This will prevent children and inexperienced operators from s tarting the e ngi ne.

5. Engage the parking brake. IMPORTANT: The hydrostatic transmissions

lock to prevent the mower from rolling f reely with the engine stopped. However, if the mower is parked on a slope, it is necessary to ENGAGE the parking BRAKE to prevent the mower from creeping. This is due to a small amount of slippage in the hydrost atic transmissions, especial ly when transmissio n flui d is warm.

Operating Instructions

ADJUSTING CUTTING HEIGHT

WARNING

The engine must be stopped before adjusting cutting height. Disengage the blade clutch (PTO), stop the engi ne, and remove the ignition key . Wait for all movement to stop before getting off the seat.

Cutting height is adjusted by positioning the four retainer hitch pins in a series of seven vertical holes on the deck support pins. Lift handles have been provided on each end of the deck to assist in raising the deck while positioning the hitch pins. Cutting heights range from 1 in. (25 mm) [top holes] to 4 in. (102 mm) [bottom hol es] in 1/2 in. (13 mm) increments.

Lift Handle

Deck Support

3. The mower will “freewheel” with the levers in the LOCKOUT position. The levers must be in the highest position to completely unlock the transmissions.

Lockout Lever

Plunger

Depressed

Lockout Lever - Freewheel Position

4. After moving the mower, release the locking cam, placing the lever DOWN in the normal OPERATING position. Make sure the transmission lockout plunger on the side of the t ransmission case (activated by t he lo ckout le ve r) is completely released, otherwise the t ransmission operation will be erratic.

Cam in

LOCKOUT

Position

Lockout Lever

Hitch Pin

Cutting Height Adjustment

TRANSMISSION LOCKOUT

To mo ve the mower w ith th e engin e NOT running (dead battery, maintenance, etc.), the hydrostatic transmissions are unlocked (released).

1. Raise the front body.

2. Lift the transmission lockout lever on both the RH and LH transmissions and secure into place with the lo cking cam.

Plunger

Released

Lockout Lever - Normal Operating Position

Cam in

UNLOCKED

Position

Operating Instructions

RECOMMENDATIONS FOR MOWING IMPORTANT: Operate the engine at full speed

when mowing, to allow the engine to produce full horsepower and to increase efficiency of the engine cooling system.

• Keep the mower deck and discharge chute clean.

• Mow with sharp blades. A dull blade tears the

grass (resulting in poor lawn appearance) and uses extra power (slowing the mowing speed).

• It is preferable to cut grass when it is dry and not

too tall. Mow frequently and do not cut grass too

short. (For best appearance, cut off 1/3 or less of existing grass height.)

• When mowing, operate the engine at or near full

throttle for the best cutting action and performance

of the grass handling system (GHS). Mowing with a lower engine RPM causes the mowing blade to not cut clean and tear the grass. The engine is designed to be operated at full speed.

• When mowing in adverse conditions (tall and/or

wet grass), mow the grass twice. Raise the mower to the highest setting - 4 in. (102 mm) - for the first pass and then make a second pass cutting to the desired height.

• When using a side discharge mower deck, the

side discharge shield must not be removed and must be kept in the lowest possible position to deflect grass clippings and thrown objects downward. Orient the side discharge away from sidewalks or streets to minimize cleanup of clippings. When mowing close to obstacles, orient the side discharge away from obstacles to reduce the chance of damage to property by thrown objects.

Side Discharge Shield in Lowest Position

• When operating on a slope, red uce speed and

use caution to start, stop, and maneuver. Avoid

sharp turns or sudden changes in direction. The

maximum recommended side slope operating angle is 20 degrees or 33% grade.

• Use a slow setting on the FSC for trimming

operations.

• Make sure the mower is leveled properly for a

smooth cut. Refer to Instructions.

Deck Leveling

in Assembly

• Use an alternating stripe mowing pattern for

best appearance and vary the direction of the stripe

each time the grass is mowed to avoid wear patterns in the grass.

• Avoid damage to the grass by slipping and skid-

ding of the drive tires. Use smoo th control mo vements of the steering levers since the hydrostatic

transmissions are “power boosted controls” and jerking the levers can easily slip the tires. For sharp turns, do not allow the inside wheel to stop and twist on grass; pull inside steering lever into reverse for a smooth “rolling” turn (one wheel rolling forward while the other rolls backward).

Maximum Recommended

Side Slope - Do Not Operate

on Steep Slopes

Maximum Recommend ed Side Slope

Operating Instructions

RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT

To avoid potential deck and/or tractor damage while using the tilt-up deck, the following recommendations are offered:

• Do not move the tractor with the deck in the tilt-

up position since both the roller wheels (on the back of the deck) and the GHS discharge chute m ay be damaged by moving the tractor. The tilt-up configuration should only be used when the tractor is parked.

• The tractor body should never be tilted for-

ward with the deck in the tilt-up position. This can

cause the deck to unhook from the tracto r and fall with considerable force, potentially c ausing dec k or tractor damage and/or bodily injury.

• When transporting a tractor with the deck in th e

tilt-up position (on a truck or trailer), the deck should be s ecured to the vehicle with a strap or

rope (stop vertical movement). This will prevent the deck from bouncing on the rear roller wheels (causing breakage). This will also prevent the dec k from unhooking from the tractor and falling, potentially causing deck or tractor damage. Damage to other items parked in front of the deck may also occur.

Operating Instructions

GRASS HANDLING SYSTEM (GHS) GHS Mode l On ly

Powerfil

Drive Motor

Actuator

Rod

“Full” Signal

Horn

Grass-Pak

Vane Switch

Catcher Door

Safety Latch

Exhaust Screen

(Removable)

Exhaust

Deflector

PTO and Blade

Gear Drive

Rear Discharge

Mower Deck

Delivery

Chute

PTO

Clutch

Body Chute

Blower

Deck

Discharge Chute

Dump Handle

Powerfil

Delivery Spout

Assembly

Catcher

Door

Catcher

Door Spring

Grass Catcher

GHS Flow and Components

Operating Instructions

Gene r al Info r m a t ion

The Grass Handling System (GHS) consists of a rear discharge mower deck connected to a 10 in. (25 cm) blower and a rear mounted grass catcher with 7.0 bushel (246 liters) capacity or optional 9.5 bushel (335 liters) capacity. The GHS blower operates any time the mower blade clutch is engaged and moves grass through the rear discharge deck chute into the grass catcher. Blower airflow is exhausted out the back of the grass catcher, through a filtering screen. When the grass c atch er i s f ull and needs to be emptied, a “full” signal horn alerts

the operator. When the “full” signal horn sounds, it is important to stop mowing to prevent overfilling and clogging of the blower system.

IMPORTANT: N ormally, the GHS blower operates with no maintenance or cleaning required. However, under certain operating conditions, the inside of the blower housing may accumulate a deposit of dirt, c ausi ng wear an d bi ndi ng of the bl owe r whee l. Normall y, dirt buil dup occu rs wh en mow in g a com- bination of dirty and damp grass, especially in the springtime. When operating in these conditions, check the blower wheel frequently for binding and clean the blower housing as required. Refer to CLEANING the GHS Blower in Mainte- nance In st ruction s.

NOTE: In Autu mn, when usin g the GH S mower to vacuum leaves, it is recommended to raise the front of the mower deck 2 to 3 notches [1 to 1-1/2 in. (25 to 38 mm)] higher than the rear. This wil l avoid “bulldozing” leaves, particularly when the leaves are piled in a thick layer. To make this adjustment, the hitch pins in the two (2) front deck support pins are re positioned 2 t o 3 notches higher while leaving the rear pins in their original position.

DANGER

NEVER operate the GHS catcher with the back door open. Objects may be thrown out the back of the catcher with sufficient force to cause seriou s injury to bystanders or pr operty dam age.

NOTE: Wh en a side discharge or m ulching mow-

er deck is installed on the GHS model, a blower intake cover should be installed in the blower intake tube. This cover “unloads” the blower and seals the intake to effectively eliminate power loss and blower noise when the blower is not being used.

Blower

Intake Cover

Blower Intake Cover

DANGER

ROTATING BLOWER BLADES

NEVER operate the GHS blow er with the blower discharge chute uncovered (grass catcher in the dump po sition) since dangerous projectiles may be thrown. NEVER put hands into the bl ower di schar ge c hute for any reason. Use a stick or similar instrument to remove any ma terial if clogging has occurred.

CAUTION

NEVER leave grass clippings in the grass catcher after mowing. Damp clippings generate heat as they decompose. This MAY cause spontaneous combustion.

Operating Instructions

Clogging Checklist In case of clog ging, there w ill be a distinct change

in the sound of the blower, i.e., the blower sound

will stop. Also, the mower deck will begin to leave a trail of grass clippings. When this occurs, stop the engine, disconnect the spark plug wires, and make

sure all movement has stopped before attempting to uncl og.

DANGER

NEVER place hands under the mower deck or in the GHS blower discharge chute. Use a stick or similar tool to remove any clogged material.

Normally, any clogging w ill fir s t de v elop at the ba c k of the mower deck in the discharge opening into the blower chute. Clogging at this point does not indi-

cate a particular problem in this part of the system, but is a symptom of something restricting the flow of material throughout the entire

system. The following list of items should be checked if a pattern of clogging begins to develop. All of these items are capable of causing clogging at the back of the deck.

• Check to see if the RH and LH mower blades are

installed for the correct rotation - install blades so the cutting edges move toward each other.

Blades Must Operate at

Right Angles (90 Degrees)

FORWARD

• Check the amount of flat section remaining at

blade tip. This is the area that is ground a way (removed) when the blades are sharpened. If too much

of the flat section is removed, the “air lift” performance or “shovel” effect of the blade deteriorates to the point that discharge of grass clippings into the blower chute is marginal. Replace cutter blades if less than 3/4 in. (19 mm) flat section remains at the blade tip.

• Check that the interior of the deck housing and

baffling is reasonably clean and free of grass and dirt buildup. While some degree of material buildup

can be tolerated, a point is finally reached where the flow of air and grass clippings is restricted.

NOTE: One condition that quickly causes a buildup of material in the deck housin g is mowing grass and/or weeds which are “juicy.” The material collects under the deck with sticky , green juice. Clover and weeds are especially a problem. The mower deck will need to be cleaned frequently when operating in these conditions.

• Check the deck cutting height setting. When

working in thick, tall grass, lower deck settings [1 to 2 in. (25 to 51 mm ) cu tting he ights] tend to restrict airflow from moving into and under the

deck. Raising the deck cutting height will significantly increase airflow an d reduce clogging when working in thick, tall grass .

• Check the interior of the chute connecting the

mower deck to the blower for smoothness and freedom f rom ob s truction.

• Check the blower wheel for bent blades and

excessive clearance between the blade tip and the

blower housing. A clearance greater than 1/8 in. (3 mm) will cause a significant loss of blower performance.

• Check the blower discharge chute into the gras s

catcher for smoothness and freedom from obstruction.

Mounting Nut

Rear Discharge

Chute

Blade Rotation for GHS Mower Deck

(view from underneath)

Torque = 60 ft-lb

(81.3 N

⋅m)

• Check the elbow inside the grass catcher for a

buildup of material in the ra d iu s of the elbow. In certain conditions (damp/dirty grass) a considerable “clump” of material can accumulate at this point, greatly restricting material and airflow.

Operating Instructions

• Check that the openings in the removable ai r

exhaust screen in the grass catcher are not plugged. If the screen is clogged, refer t o Cleaning the GHS Exhaust Screen in th is section.

Remember, anything that restri cts airflow or m aterial flow along the entire path from the m ower deck to the grass catcher can cause clogging.

Using the Tilt-Up Deck Refer to CLEANING of Grass Buildup in Mower

Housing for

Instructions.

Using the GHS Catcher

Powerfil

The GHS catcher has an oscillating grass delivery spout (P OWERFIL grass clippings throughout t he interior of the gras s catcher (even when mowing wet, heavy grass). The oscillati ng act ion m ay be c heck ed by tu rning the ignition switch to the ON posit io n an d movi ng the blade clutch to the ENGAGED position. The spout should oscillate approximately 25 cycles per minute.

NOTE: If the grass spout fails to oscillate, the clutch switch should be chec ked for function (the switch closure is adjustable).

“Full” Signal Horn

The GHS cat cher has a “full” signal horn to alert the operator to dump the catcher when it is full (to

prevent overfilling and clogging) . The “full” signal horn is activated by a vane switch (Grass-Pak

switch) mounted on the grass delivery spout. Oscillating action of the spout triggers the vane switch as grass begins to fill in around the spout when the catcher is almost full.

The “full” signal function may be checked by turning the ignition swi tch ON, engaging the blade clutch (engine not running), opening the catcher back door, and triggering the Grass-Pak

oscillates. The ho rn shoul d sound a s the s witch is moved in both directions.

Tilt-Up Decks

) which is designed to spread

in Maintenance

vane by hand as it

WARNING

DO NOT test the Grass-Pak® switch with

the engine running. Projectiles may be thrown out of the grass delivery spout, and COULD cause serious injury.

The “full” signal horn is designed to operate (sound) when the grass catcher is almost full. The t iming of the signal is ad justable by changing the position of the vane on the G rass-Pak

coming on too soon (catcher not complete ly full) or too late (grass clogging in catcher spout and delivery chute), refer to ADJUSTMENT S of GHS “Full”

Signal Horn in Maintenance Instructions. NOTE: The horn signal should be adjusted to

sound BEFORE the catcher is completely full to give the operator time to react and stop mowing. A n indication the horn signal is coming on too late (delayed too much) is if grass clippings are falling out of the grass catcher delivery chute when the catcher is dumped.

Cleaning the GHS Exhaust Screen

To remove the grass catcher screen for cleaning, open the catcher door, push forward and pull down on the grass catcher screen knobs (on either side of the screen), and slide the s creen out. Use a high pressure washer or water spray and brush to clean the screen.

Keeping the catcher exhaust screen clean and open is essential to good performance of the catching

system. In some mowing con ditions, e.g., wet and dirty, it will be necessary to clean the screen frequently to avoid clogging the m ower deck, blower, and chutes due to airflow restriction.

Grass Catcher

Screen

switch. If the signal is

Removal

Knobs

Grass Catcher Screen Removal for Cleaning

Operating Instructions

Dumping the Catcher

For dumping, the catcher e ith er tailgate dum ps int o a disposal area or dumps into the optional dump bag. The dump bag is a reusable nylon f abric ba g designed to conveniently move grass clippings from the catcher to a remote disposal area or container.

Tailga te Du m p ing

1. Open the back door by lifti ng on th e door handle.

NOTE: To prevent accidental door closure, a safety latch locks the door open in the fully

opened position while the catcher is being dumped.

2. Tilt the catcher back to dump by lifting on the catcher lift handle on the low er front corner o f the catcher.

3. Lower the catcher smoothly down to the normal operating position. DO NOT allow the catcher

to drop down - the gas spring, that holds the catcher in the raised position, is not a shock absorber for lowering the catcher.

4. Close the door by holding the door handle with the left hand and releasing the safety latch on the door hinge mechanism with the right hand. The safety latch is released by pressing in on the top of the latch. Then, smoothly close the door, working against the spring pressure that holds the door closed. DO NOT let the door slam shut by releasing the do or bef ore it is c l osed.

Safety

Latch

Catcher Door Safety Latch

Using the Dump Bag (7.0 Bushel Catcher)

1. Open the back door by l ifting on the door ha ndle.

NOTE: To prev ent accidental door closure, a safety latch locks the door open in the

fully opened position while the catcher is being dumped.

2. Orient the dump bag with one of the handle straps on the bag opening facing up.

Tailgate Door

Handle

DANGER

PINCH POINT - SPRING LOADED DOOR

When lowering the door on the GHS catcher, depress the safety latch on the side of the catcher. BE VERY CAREFUL to keep ha nds, finge rs, etc. ou t of the h inging mechanism and away from the door frame as the door closes. The springs that hold the door closed during operation are very powerful, and the door can slam shut with considerable force.

Hook Bag

on Bumper

Positioni ng Dump Bag on Ca tc her

Operating Instructions

3. Hook the bottom of the bag over the rear bumper while lifting on the handle strap.

DANGER

4. Tilt the catcher back to dump into the bag by lifting on the catcher lift handle on the lower

front corner of the catcher with the one hand while continuing to ho ld up o n the bag stra p with the other han d. Refer to photos for positioning the bag and dumping.

Catcher Lift/

Dump Handle

Dumping Catcher into Dump Bag

PINCH POINT - SPRING LOADED DOOR

When lowering the door on the GHS catcher, depress the safety latch on the side of the catcher. BE VERY CAREFUL to keep hands, fingers, etc. out of the hinging mechanism and away from the door frame as the door closes. The springs that hold th e door closed d uring operation are very powerful, and the door can slam shut with considerable force.

Power Dump Option

When equipped with the optional p ower dump system, the operator dumps the catcher while sitting in the seat. A toggle switch operating a power ram is used to raise and lower the catcher. The back door automatically opens and closes during the dump cycle.

Hold the toggle switch UP or DOWN to RAISE or LOWER the catcher. When the catcher reaches the full raised or lowered position, the power ram clutch will make a ratcheting sound. Rel ease the toggle switch as soon as this sound is heard. DO NOT op-

erate the ram with the clutch ratcheting for an extended time as t his wi ll cause ex tra wear on the

clutch mechanism.

5. Lower the catcher smoothly down to the normal

CAUTION

operating position. DO NOT allow the catcher to drop down - the gas spring, that holds the catcher in the raised position, is not a shock absorber for lowering the catcher.

6. Clos e th e door b y hol din g the do or ha ndl e w ith the left hand and releasing the safety latch on the door hi nge mech ani sm w ith t he ri ght ha nd. The safety latch is released by pressing in on the top of the latch. Then, smoo thly close the door, working against the spring pressure that holds the door closed. DO NOT let the door slam shut by releasing the door before it is closed.

The operator should be in the seat and bystanders stay clear when the power dump is operating. The power dump is used ON LY for tai lgate dum ping. Do no t attempt to use the optional dump bag or any other ba g wi th th e power dump.

NOTE: If grass tends to hang up in the catcher af-

ter raising the catcher with the power dump, “jiggle” the steering levers and make the tractor bounce a little to unstick the grass and make it sli de out of the catcher.

NOTE: With the power dump mechanism in the normal operating position (catcher down), the catcher can be manually ra ised for access to the engine and the catcher can be manually du m pe d .

Operating Instructions

Cable Guide

Lift Channel

Power Dump

Ram Actuator

Grass Catcher

Door Actuator

Arm

Catcher Door

Gas Sp ring

Fork

Catcher Door

Cable Rod

Guide

Cable Assembly

Gas

Spring

Actuator Mount

Assembly

Dog Leg

Assembly

Rubber

Bumper

Power Dump Components

Maintenance Instructions

CAUTION

Mainten ance proced ures requiring s pecial training or tools should be performed by a trained technician .

MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MT

Service Item

Check Engine Crankcase Oil Level x 46 Check/Clean Engine Air Cooling System* x 57 Check Security of Air Filtration Components x 60 Check Air Filter Restriction Gauge x 54 Clean Grass Buildup Under Deck x 58 Clean GHS Exhaust Screen* x 40 Clean GHS Blower* x 59 Service Mower Blades x 61 Check Functions of Instrument Panel and

Warning Horn Lubricate Grease Fittings and Oil Points* x 47 Check PTO Gearbox Oil Level** x 51 Check Battery Electrolyte Level x 60

Check Hydrostatic Transmission Fluid x 52 Check Tire Pressure x 61 Check Drive Belts (Jackshaft, Engine PTO,

GHS Blower, Ground Drive) Check Gearbox Oil Seals x 63 Check Turbine Precleaner* x 54

Check/Clean Primary Air Filter Element Change Engine Crankcase Oil Check/Adjust Blade Clutch (PTO)/

Brake Action Check Oil Level in Gear Axle x 51 Clean Hydrostatic Transmission Cooling Fins x 60 Clean Engine Cooling Fins x 57

Check/Regap Spark Plugs x 63 Change Engine Oil Filter x 46 Check Fuel Lines and Clamps x 63 Check/Clean Secondary Air

Filter Element and Foam Precleaner Replace Primary Air Filter Element

and Vacuator™ Valve Replace Fuel Filter x69 Service Battery x60 Check/Adjust FSC Friction Lock x 79 Service Solenoid Shift Starter x 63 Change Gear Axle Oil

Change Hydrostatic Transmission Fluid Replace Fuel Lines and Clamps x63

∆

∆∆∆

∆∆

∆

∆∆∆

Daily

x22

Hours

x62

100

Hours

x54 x46

x74

200

Hours Yearly

x56

x54

Every

2Years

x51 x52

Ref.

Page

∗ More often in extremely dusty or dirty conditions (refer to notes about air cleaner element in

IMPORTANT TIPS FOR CARE OF KOHLER ENGINE)

∗∗ Change PTO gearbox oil after first 100 hours of operation (break-in period)

∆ Primary air cleaner is remote mounted Donaldson Radialseal™ unit, secondary air cleaner is

standard Kohler engine mounted unit, replace primary filter every year or after 6 cleanings

∆∆ Change engine oil and filter after first 5 hours of operation of a new engine (break-in period)

∆∆∆ Change every 2 years or 1000 hours

Maintenance Instructions KOHLER TIPS

IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE

Fuel System

• Fuel must be clean - free from water, dirt, and or-

ganic material.

• Change fuel filter on a regular basis and when

contamination is suspected or found in the fuel.

Starting/Stoppi ng

• For starting in cold weather [below 40° F (4° C)],

use the optional cold start lever to release the hydrostatic transmissions from the starter cranking load.

• Start engine with the throttle advanced off idle

(1/4 to 1/2 throttle). This will aid starting, especially in cold weather.

• Keep the battery fully charged.

• Match crankcase oil viscosity to the ambient tem-

perature, allowing the engine to crank faster and start easier.

• Use fast idle for stopping engine to avoid run-on

or backfiring.

Cooling System

• Keep engine air intake screen and cylinder head

fins free of grass clippings, chaff, and dirt. Inspect intake screen and cooling fins for cleanliness and no damage.

• Periodically remove two access panels in the en-

gine shroud to inspect and clean cylinder head cooling fins.

• Check performance of the cooling system by

starting the engine, holding a hand a djacent to the cylinder head, and feeling the cooling airflow.

• Operate the engine at full speed when mowing.

This allows the engine to produce full horsepower and move more cooling air through the engine cooling fins.

Air Cleaner System

• Use only Kohler and Donaldson air cleaner ele-

ments. Aftermarket elements may not seal in the air cleaner housing, allowing dirt to enter the engine. Also, aftermarket filters often skimp on the filtration media and require more frequent cleaning and replacement (see following instructions).

• Use the air flow restriction gauge to indicate the

need to service the primary air filter.

• Do frequently check the Tu rbine Precleaner for

free movement of the internal fan.

• DO NOT overservice or frequently “disturb” ei -

ther the primary or the secondary air fi lter. A dirty air filter actually cleans better than a new one. Changing and cleaning the air filter too often can actually reduce filter efficiency and increase the opportunity for traces of dust to enter the engine. For the primary filter , wait until the element really needs servicing as indicated by the ai r flow res triction gauge. The secondary air filter should be serviced yearly or if there are indications that the primary filter has failed.

• When the primary air filter element is removed or

replaced, make sure all dust is cleaned out of the air cleaner ho usi ng an d ho se. Us e a dam p cloth

and wipe the interior of the canister and hose clean (a little dirt left he re will be sucked into the engine and reduce engine life). When the filter is reinstalled, make sure the element is h eld tight and straight in the canister for proper seating and sealing.

• Periodically check the air intake hose for cuts,

nicks, etc., an d the hose clam p s fo r ti ghtness.

DANGER

Oil

• Use only multi-viscosity oils as specified with the

Make sure to keep hands clear of exhaust pipe, muffler, and moving parts when checking airflow.

viscosity matching ambient temperatures for the engine operating conditions. This will aid starting in cold weather and assure proper lubrication in hot weather.

• Use only Kohler oil filters. Aftermarket filters

may not seal properly and/or have the incorrect

pressure relief valve for proper lubrication.

Maintenance Instructions LUBRICATION

LUBRICATION

WARNING

DO NOT attempt to lubricate the machine with the engine running. Disengage the PTO clutch, shut o ff the machine, and remove the ignition key.

Proper lubrication is an important maintenance procedure. It reduces wear and makes the machine quieter and easier to operate.

Engine Oil

Engine Break-In Oil

No special break-in oil is required. Th e engine is serviced with 10W-30, Service Class SG oil from the factory . Change the oil after the initial engine break-

in period of 5 hours. Thereafter, change oil after every 100 hours of operation.

3. Remove the dipstick, wipe off with a clean rag, then reinsert the dipstick into the tube and press all the way down.

4. Remove the dipstick again and check the oil level on the dipstick. The oil level should be within

the “Operating Range” on the dipstick (between the “L” mark and the “F” mark).

IMPORTANT: DO NOT operate engine without a sufficient oil supply in the cr ankcase. DO NOT operate with the oil level below the “L” mark or above the “F” mark on the dip st i ck .

5. If additional oil is needed, refer to Specifications for proper crankcase lubricant. Fill up to, but

not above, the “F” mark on the dipstick. IMPORTANT: DO NOT overfill the crankcase

(oil above “F” mark) as this CAN result in engine overheating, loss of power, and possible engine damage.

Checking Engine Crankcase Oil Level

Check the engine crankcase oil level before use and

after each 8 hours of continuous operation. IMPORTANT: The importance of checking and

maintaining the proper crankcase oil level cannot be overemphasized. Check the oil level BEFORE EACH USE.

1. Park the mower on a level surface with the en- gine sto pped. A lso, make sure the engine is cool and oil has had time to drain into the sump [allow at l east five (5) minutes after stopping the engine].

IMPORTANT: NEVER check or add oil with t he engine running.

2. Before removing the dipstick, clean the area around the dipstick to keep any dirt or debris out of the engine.

Full Mark

Low Mark

Dipstick Operating Range

Changing Engine Crankcase Oil/Oil Filter

Change the engine crankcase oil after every 100 hours of operat ion and replace the oil filter every other oil change (every 200 hours of operation).

Maintenance Instructions LUBRICATION

1. Park the mower on a level surface with the en- gine stopped. The eng ine oil should be warm before draining. If not warm from operation, start the engine and run a few minutes to warm the oil.

2. Remove the dipstick and the oil drain plug and drain the oil into a suitable container. Be sure to allow ample time for complete drainage.

Oil Filter

Drain Plug

8. Fill the crankcase through the oil filler tube (dipstick opening) with new, clean oil. Use only crankcase lubricants recomme nded by the e ngine manufacturer. Refer to

this manual or the engine owner’s manual. Use the recommended oil viscosity for the expected ambient temperature. Oil with the correct viscosity will aid starting in cold weather and assure proper lubrication in hot weather. Fill up

to, but not above, the “F” mark on the dipstick. Crankcase capacity is 1.85 quarts (1.75 liters) plus 1/2 pint (.24 liters) for the new oil filter.

IMPORTANT: Check the dipstick reading before adding the l ast 1/2 pint of oil and fill only to the “ F ” mar k . DO NOT overfill the crankcase

(oil above “F” mark) as th is CAN re sult in engine overheating, loss of power, and possible engine damage.

9. Start the engine and chec k f or oi l l eaks around the oil filter . Stop the engine, recheck the oil level, and add oil if necessary. (When the engine is first operated with a new oil filter , the oil level drops slightly as the filter is filled with oil.)

Specifications in

Oil Drain/Oil Filter Location

3. Before removing the oil filter, clean the area around the filter to kee p dirt and debris out of the engine.

4. Remove the old oil filter and w ipe off the filter mounting surface on the engine.

5. Apply a thin coating of clean oil to the rubber gasket on the replacement oil filter.

IMPORTANT: Use ONLY oil filt ers from the engine manufacturer (Kohler 12-050-01). Aftermarket oil filters may not seal properly and/or may not have the correct pressure relief valve for proper lubric ation

6. Install the new oil filter on the engine. Turn the filter clockwise until the rubber gasket contacts the seali ng surface, then tighten an additional 1/2 turn.

7. Reinstall the drain plug. Make sure it is t ightened to 10 ft-lb (13.6 N

·m).

Grease Fitting and Oil Point Lubrication Lubricate the grease fittings and oil points after ev-

ery 25 hours of operat ion. Lubricate more often

when operating in dusty or di rt y conditio ns. Use SAE general purpose lithi um or molybdenum ba se grease for grease fittings and light machine oil (SAE

10) to lubricate oil points. Lubr icate the locations

shown in the Chassis and Deck Lubrication Points illustration.

NOTE: PTO universal joints (on the deck and trac-

tor) require routine lubrication after every 8 hour s of running time.

Maintenance Instructions LUBRICATION

Ident Lubrication No. No. Location Type Places

1 Deck Caster Wheel Fork Pivot Grease 2 2 Deck Caster Wheel Bearing Grease 2

3 Tee Gearbox, Deck Oil 4 Blade Drive Gearbox Oil

5 PTO Shaft Guard Hinge Oil 1 6 Universal Joint Shaft Assembly Grease 7 Pivot Assembly, Tilt-Up Deck Grease 4

8 Deck Support Arm Socket Grease 2

9 Body Hinge Point Oil 2 10 FSC Actuator Rod Pivot Pins Oil 2 11 FSC Lever Pivot Grease 1 12 FSC Lever Fork Grease 1

(Grease Slide Area) 13 (FSC) Friction Body Pivot Grease 1 14 Steering Lever Pivot Grease 4 15 Deck Roller Wheel Oil 2 16 Deck Support Arm Pivot G rease 2 17 Deck-to-PTO Coupling Grease 1

(Grease Slide Area) 18 Universal Joint Tube Assembly Grease 19 Universal Joint Quick Connect Grease 1

Spline (Grease Slide Area) 20 Parking Brake Lever Grease 1

21 Gear Axle Oil 22 Belt Tightener Pivot, Grease 1

Jackshaft Drive 23 Throttle Control Cable Ends Oil 2 24 Clutch Actuator Push Rod Grease 2 25 PTO Clutch Lever Pivot G rease 1 26 Belt Tightener Pivot, Grease 1

PTO Clutch

* 1 * 2

** 1

*** 2

Ident Lubrication No. No. Location Type Places

27 Brake Actuator Rod and Brake Oil 3

Band Pivot Pins (Clevis) 28 Brake Actuator Pivot Grease 1 29 Anti-Scuff Roller Wheel Oil 2 30 Catcher Hinge Point Oil 2 31 Rear Wheel Bearings Grease 2

32 Engine Oil Oil 33 Choke Control Cable Ends Oil 2 34 Belt Tightener Pivot, Grease 1

Blower Drive (GHS Model Only) 35 Belt Tightener Pivot, Grease 1

Ground Drive 36 PTO Gearbox Dipstick Oil 37 Hydrostatic Drive Oil 38 Choke Control Pivot Oil 1

39 Throttle Control Pivot Oil 1 40 Discharge Chute Hinge Oil 1

*** 1

*** 1 *** 2

* Gearboxes are permanently lubricated and

sealed requiring no scheduled lubrication. Oil level should be checked only when an oil leak is noted. Refer to Mower Deck Gear-

box Lubric at ion in this sect io n.

** Grease every eight (8) hours. *** Refer to Gear Axle Lubrication, Engine

Oil, Tractor PTO Gearbox Lubrication, and Hydrostatic Transmission Fluid in this sec-

tion.

NOTE: DGHS42 Tilt-Up Deck is shown f or reference.

For other Deck Lubrication Points, Refer to Deck and Carrier Frame Illustrated Parts Manual.

Maintenance Instructions LUBRICATION

Chassis and Deck Lubrication Points

Maintenance Instructions LUBRICATION

Mower Deck Gearbox Lubrication NOTE: These instructions apply to all mower decks

with gear-driven blades. Refer to DSD52 or DSD62 Mower Deck Lubrication in this section for the

DSD52 or DSD62 deck with belt-driven blades. The mower deck gearboxes (tee gearbox and blade

drive gearboxes) are connected as a unitized assembly , and oil flows freely between them. The gearboxes are permanently lubricated (oil filled) and sealed requiring no scheduled lubrication. However, the gearbox oil seals should be checked every 25 hours for indication of an oil leak ; particularly the lower seals on the blade drive gearboxes should be inspected, since they operate in a dirty environment. If an oil leak is noted, repl ace t he oi l seal and rel ubricate the gearbox assembly as follows:

1. Remove gearbox cover (footrest). Deck orientation should be the normal operating position.

Blade Drive

Gearboxes

NOTE: In case the gearboxes are completely drained of oi l, appro ximately 5 fl. oz. (15 cl) of oi l per gearbox is required to refill the gear drive assembly.

NOTE: Since the gearboxes are conn ect ed as a unit by connector tubes, it is necessary to add oil slowly. Allow a few minutes after adding oil for the oil to flow throughout the assembly and the oil level to stabilize before reassembly.

IMPORTANT: DO NOT overfill the d eck gearboxes. The gearbox assembly is not vented, and overfilling with oil will cause excessive pressure and result in oil l eaks .

5. Check condition of the cover gasket and replace if worn or damaged. Reinstall gearbox cover plates; torque screws to 24 in-lb (2.7 N

DSD52 or DSD62 Mower Deck Lubrication

There are several special lubrication requ irements for the DSD52 or DSD62 mower deck in addition to the requirements detailed in the Chassis and Deck Lubrication illustration. Lubricate the locations shown in the Blade Spindle Lubrication and Gear- box, Dolly Wheel, and U-Joint Lubrication photos and check and maintain oil in the belt drive gearbox.

⋅m).

Tee

Gearbox

Mower Deck Gearboxes

(shown with gearbox cover removed for clarity)

2. Clean the area around the individual ge arbox cover plates to prevent contaminants from entering the gearcase.

3. Remov e the screws securing the cover plates on the blade drive gearboxes.

4. Check the level of lubricant in the gearboxes. If the lubricant is low, add SAE E.P. (Extreme Pressure) 90W oil until the oil level is up to (submerges) the horizontal shaft in the gearbox (shaft parallel to cover plate).

1. Lubricate the blade spindles every 25 hours with two (2) shots of SAE general purpose lithium or molybdenum base grease.

Blade

Spindles

Blade Spi ndl e Lubrication

Maintenance Instructions LUBRICATION

2. Check the oil level in the belt drive gearbox every 100 hours (or sooner if a visible oil leak has

developed). With the deck in the normal operating position, remove the level plug in the side of the gearcase. Add SAE E.P . (Extreme Pressure) 90W oil to maintain the oil level to the plug. If the oil level is low , check the gearbox for any indication of an oil leak. If an oil leak is noted, the gearbox will need to be removed and rebuilt.

3. Lubricate the dolly wheel pivot every 25 hours with general purpose grease.

4. Lubricate the U-Joint i n the drive shaft every 8 hours with SAE general purpose lithium or molybdenum base grease.

Jackshaf t

Dipstick

PTO

Gearbox

Belt Driv e

Gearbox

Dolly Wheel

Pivot

U-Joint

Gearbox, Dolly Wheel, and U-Joint Lubrication

Tractor PTO Gearbox Lubrication

Checking Gearbox Oil Level

Check the gearbox oil level every 25 h ours, and if necessary, add oil [SAE E.P. (Extreme Pressure) 90W gear lube] to maintain oil level to the FULL mark on the dipstick.

IMPORTANT: DO NOT overfill the PTO gearbox to avoid oil leakage out of the dipstick standpipe.

Level Plug

Dipstick Location, Tractor PTO Gearbox

Changing Gearbox Oil

The tractor PTO gearbox is oil filled and vented. No scheduled oil change is required. However , changing the oil after the first 100 hour break-in period will extend gearbox life and is recommended.

1. Remove the drain plug in the bottom of the gearcase, drain the oil, and reinstall the plug.

2. Refill the gearbox through the dipstick standpipe usi ng 7 to 8 fl. o z. (21 to 24 cl) of SAE E.P. (Extreme Pressure) 90W gear lube.

3. Check t hat the oil level is at th e FULL mark on the dipstick. DO NOT overfill.

Gear Axle Lubri c at i on

• The gear axle oil lubrication is SAE 80W-90 (API

GL-5) gear lube.

• Check the axle oil level after every 100 hours of

operation by removing the oil level plug. If additional oil is needed, remove the breather vent on top of axle and fill until oil is at the level plug.

If the oil level is low, check the gearbox for any indication of an oil leak. If an oil leak is noted, the gearbox will need to be removed and rebuilt.

• Change axle oil every 1000 hours or two (2)

years.

Maintenance Instructions LUBRICATION

Hydrostatic Transmission Fluid

Checking Hydrostatic Transmission Fluid Level

Hydrostatic transmission fluid level should be checked every 25 hours of machine operation. It is preferable to check the fluid level when fluid is cold . Check fluid level as follows:

1. Park the mower on a level surface. Stop the engine and wipe dirt and contaminants from around the reservoir cap and air bleed plug.

IMPORTANT: Before removing the reservoir cap, clean any dirt from around it. Any dirt or c ontaminants entering the tra nsmission will ac celerate wear and eventually cause loss of power to the drive wheels.

2. Remove the reservoir cap and chec k the level of the fluid. The reservoi r has a flui d level COLD mark and HOT mark. The reservoir oil level

should ALWAYS be at or above the COLD mark and NEVER above the HOT mark.

Reservoir Cap

Hot Level

b. If no fluid leaks from around the air bleed

plug: * Slowly add fluid into the reservoir until

fluid starts to leak from around the plug. (Transmissions are serviced from the factory with Mobil DTE 18M hydraulic oil. When it is neces sary to add fluid, refe r to Specifications for the proper flu- id. Any of the listed fluids may be used.)

* As soon as there is fluid leaking from

around the air bleed plug, tighten the plug and fill the reservoir to the COLD level mark. Wipe any excess oil off of the transmission housing.

IMPORTANT: DO NOT overfill the transmission reservoir . This will result in oil leaking out of the reservoir cap vent when the transmission warms up. It is preferable to add fluid to the transmission when it is cold and make sure the o il is not above or b e-

low the COLD leve l m a rk . IMPORTANT: The transmission reservoir has a

fine mesh screen in the bottom to trap dirt and foreign particles from entering the transmission. When filling the reservoir, fluid will flow quite slowly through this screen; so it is essential that there is fluid at the bleed plug before the transm ission is co nsidered full.

Cold Level

Air Bleed Plug

Transmission Reservoir

and Air Bleed Plug Location

3. If the fluid is below t he COLD mark (or the transmission is not performing properly), loosen the air bleed plug (located on t he top of transmission case next to the plastic reservoir).

a. If a small amount of fluid leaks from around

the air bleed plug: * The transmission is full of fluid.

* Tighten the plug an d f ill t he reservoir to

the COLD level ma rk .

IMPORTANT: Any attempt to remove or in any way alter the filtering screen in the transmission reservoir could cause damage to the transmission and will VOID any transmission warranty.

Changing Hydrostatic Transmission Fluid

The hydrostatic fluid should be changed every 1000 hours or two (2) years . A lso, the fluid should be changed if the natural color of the fluid has become blac k or mil ky (indicating possible overheating or water contamination of fluid). The transmission may be refilled using any of the fluids listed in Specifications. The fluid is changed as follows:

1. Park the mower on a level surface and stop the engine.

2. Remove the lower drain plug and the air bleed plug. Allow the fluid to drain out.

IMPORTANT: Clean any dirt from around the plugs and reservoir cap before removing them.

Maintenance Instructions LUBRICATION/CLEANING

3. Reinstall the lower drain plug, making sure the rubber O-ring on the plug is in place and in good condition.

4. Refill the transmission through the air bleed plug hole until it is as full as possible.

IMPORTANT: Avoid fluid contamination when filling the reservoir. Use clean container, spout, funnel, etc. when pouring the f luid into the reservoir .

5. Rotate the transmission input shaft about five (5) revolutions to allow any trapped air to escape.

6. Before installing the air bleed plug, fill the reservoir with fluid allowing a small amount to l eak out of the air bleed plug hole.

Turbine

Precleaner

Tube

Donaldson Air

Cleaner (Primary)

7. Install the air bleed plug and fill the reservoir to the COLD level line.

CLEANING Engine Air Cleaner System

There are three main components in the engine air cleaner system: a turbine precleaner, a Donaldson

Radialseal™ air cleaner, and the standard Kohler engine air cleaner. Each component is checked, cleaned and maintained on a different schedule based on the filtering action required. Working as the primary air filter, the Donaldson is serviced more frequently than the s econ dar y Kohler engine air filter. Each component is serviced as follows:

Air Cleaner

Cartridge

Donaldson Air

Cleaner Cover

Vacuator™

Valve

Wing Nut

Air Intake

Hose

Air Restriction

Gauge

Foam Precleaner

Hose

Clamp

Air Cleaner

Cover

Wing Nut

Element

Cover

Air Cleaner

Base Plate

Engine

Air Cleaner

Cover Seal

Seal

Paper

Element

Engine

Air Cleaner

(Secondary)

Engine Air Cleaner System Components

Maintenance Instructions CLEANING

Turbine Precleaner

The turbine precleaner is mounted on a remot e air intake tube connected to the Donaldson air cleaner . A spinning fan driven by the intake airflow separates dust from the air, giving the initial stage of air cleaning. Dust particles are exhausted through a single small vent in the side of the housing. Since no dust is trapped, the precleaner operates without cleaning. The only maintenance required is to check the operation of the internal fan every 100 hours. Verify operation:

1. Look into the exhaust ven t while shin ing a l ight into the intake.

2. Start the engine and watch the fan begin to spin as the throttle is advanced.

If the fan is not spinning, service or replace the precleaner as required.

Donaldson Radialseal™ Air Cleaner (Primary)

A remote mounted Donaldson Radialseal™ air cleaner provides the primary air filtering function (ahead of the standard Kohler eng ine air cleaner). The paper filter element slides over an outlet tube inside the air cleaner canister with radial sealing ac- tion, eliminating the possibi lity of dust leaks due to improper filter installation. Intake design, internal baffling, and a Vacuator™ valve provide dust separation and automatic precleaning action. Daily or frequent servicing of the air cleaner is not required. Use the air restriction gauge on the air cleaner outlet to indicate when the air filter needs servicing -- a red flag will appear when the filter is overly restrictin g airflow into the engine.

IMPORTANT: Use only Donaldson air filter e lements for replacement (Donaldson P822686 or Walker 5090-1). Aftermarket filters may not seal properly or filter efficiently.

Cover

Canister

Vacuator™

Valve

Radialseal™

Filter Element

Cover Latch

Air Cleaner Components

(shown with cover being removed)

IMPORT ANT: The Donaldson air cleaner uses a dry

paper-type air filter element. NEVER apply oil to the paper element.

Push Button to Reset

Indicator After Service

Air R e stri ctio n

Gauge

Air Restriction Gauge Location

Clean and inspect the pape r element after every 100 hours of service and replace the element yearly or after six (6) cleanings (or when dirt y or dam -

aged). More frequent cleaning may be required when operating in extremely dusty conditions as indicated by the air restriction gauge. Service the air cleane r a s follows:

Maintenance Instructions CLEANING

1. Release the top and bottom cover latches and remove the air cleaner c over. Wash the cover

and Vacuator™ valve. Check that these components are in good condition. The V acuator™ valve is subject to wear and deterioration and should be replaced yearly or when damaged. The lips of the valve should close and fit together; any cracks, deformation, or wear in the valve is cause for replacement.

2. Remove the filter element by pulling it out of the canister. There will b e some initial resi stance as the filter seal breaks loose and slides off of the outlet tube. Gently move the end of the fil- ter up and down and side to side or twist to loosen the seal. Us e gentle action to m inimize the amount of dust dislodged as the filter is removed.

3. Clean the filter element using low pressure compressed air [less t han 100 PSI (689 k Pa)]. Blow out the filter from the interior of the element while turning the element.

NOTE: Washing the element in water or cleaning solution is not recommended. Replace the element if it does not clean up with compressed air .

4. Use a bright light inside the element to inspect for damage. Check the element very carefully for pin holes or other damage that will allow dirt to leak through the paper media. Replace element if necessary.

5. Check the condition and resilience of the radial sealing surface (inside of the open end) of the filter. Replace the filter if any cracks, tears, or other damage to the sealing surface are noted.

8. Insert and seat the filter element carefully into the canister, applying pressure at the o uter rim of the filter; not at the flexible center. Make sure the filter element is completely i n place before installing the cover.

IMPORTANT: DO NOT use the cover latches to force the filter into the canister -- the cover should fit on with no extra force.

NOTE: DO NOT use petroleum based lubricants on the sealin g surfaces of the filter; use t alcum powder or dry silicone lubricants if required for filter installation.

Canister

Outlet Tube

Radialseal™

Filter Element

Radial Sealing

Surface

Air Filter Element Replacement

9. Install the cover with the word “TOP” properly oriented to the top of the canister. Give the cover a slight twist as it reaches the canister to make sure the tab inside the cover goes into a slot, otherwise the cover will not fit properly. Make sure both the top and bottom cover latches are securing the cover in place.

10. Check the air intake hose for cuts, nicks, etc., and the hose clamps for tightness.

6. Use a clean, damp cloth and wipe the interior of the air cleaner canister clean. Use special care to clean both the inside and outside surfaces of the outlet tube.

IMPORTANT: Any dust left on the inside of the outlet tube will go into the engine and cause wear.

7. Check the outside surface of the outlet tube for smoothness and cleanness (this is the sealing surface).

11. Reset the air restriction indicator (press but ton on top).

Maintenance Instructions CLEANING

Kohler Air Cleaner (Secondary)

NOTE: The Kohler Air Cleaner should onl y be s erviced more often than a yearl y interval if there are indications that the Dona ldson Radialseal (primary) has failed.

• Foam Precleaner

An oiled, foam precleane r surrounds the paper element of the Kohler engine air cleaner system. Clean and re-oil the foam precleaner yearly or more often in dusty or dirty conditions.

1. Unscrew the air cleaner cover mounting nut and remove the air cleaner cover.

2. Remove the foam precleaner by sliding it off the paper element.

IMPORTANT: Repla ce the foam precleaner if necessary. Use ONLY Kohler replacement part #24-083-02.

3. Wash the foam precleaner in warm water with detergent. Rinse thoroughly and sq ueeze out excess water (do not wring). Allow the precleaner to air dry.

4. Saturate the foam with clean engine oil. Squeeze to distribute and remove excess oil.

5. Reinstall the precleaner by sliding it over the paper element.

6. Reinstall the air cleaner cover and mounting nut.

1. Unscrew the air cleaner cover mounting nut and remove the air cleaner cover and rubber seal on the air cleaner stud.

2. Remove the foam precleaner from the paper element. Replace if necessary.

3. Unscrew the element cover mounting nut and remove the element cover an d the paper element.

4. Use a bright light and inspect the inside of the element for dirt or damage. Check very carefully for pin holes or other damage that will allow dirt to leak through the paper . Replace the element if necessary .

5. Check the condition and resil ience of the element gaskets. If the gaskets have hardened or cracked or if there is ev idence of a gas ket not seating evenly, replace the element.

6. Check the air cleaner base plate. Make sure it is secure and not bent or damaged. Check the condition of the rubber seal on the air clean er stud. Also, check the element cover for damage. Replace any damaged components.

7. Reinstall the paper element, cover, mounting nut, and foam precl eaner. Tighten, but do not overtighten, the mounting nut (tighten 1/2 to 1 turn after contacting the cover).

NOTE: A light coating of grease on the filter gaskets is recommended to enhance sealing and prevent dust leaks.

• Paper Element

The Kohler engine uses a dry, high density paper air filter element. Check the element (located under the foam precleaner) yearly or more often in dusty or dirty conditions. Replace the element if it is dirty, bent, or damaged.

IMPORTANT: Use ONLY Kohler part #47-083-03. Aftermarket filters may not seal properly or filter efficiently.

IMPORTANT: K ohler does not recommend cleaning the paper element and reinstalling. DO NOT wash the element or use pressurized air to clean as this will da mage the element . NEVER apply oil t o the paper element.

8. Check the security of the elem ent. Mak e sure the element is positioned properly and sealed tightly against the air cleaner base plate and element cover.

9. Reinstall the rubber seal on the stud, the air cleaner cover, and mounting nut.

Maintenance Instructions CLEANING

Rubber

Seal

Air Filter Reinstallation

Engine C ool i ng S ys te m

Paper Element Gasket -

Lightly Grease to

Improve Sealing Action

Air Cleaner Base Plate

(Check Sealing Surface)

DANGER

Make sure to keep hands clear of exhaust pipe, muffler, and moving parts when checking airflow.

Every 100 hours, inspect and clean the cooling fins

(more often when operating in extremely dusty, dirty conditions). Remove the two (2) cooli ng fin acc ess panels in the engine shroud and clea n the cooling fins and external surfaces using compressed air. Make sure to reinstall the access panels before operating the engine.

NOTE: Some Kohler engines have not been equipped with the cooling fin access panels. Kohler kit #25-755-21 installs the panels if they are missing.

Engine Cooling

Fin Access Panels

Kohler Engine

Shroud

Air Intake System

To prev ent engine overheating and pos sib le engin e damage, clean grass clippings, chaff, and dirt from the rotating engine air intake screen after every 8 hours of op eration . In certain mowing conditions

(dry grass, leaves, tree “cotton”, etc.), it may be necessary to check and clean the screen several times each day to prevent engine overheating.

CAUTION

Operating the engine with a blocked air intake screen, dirty or plugged cooling fins, and/or cooling shrouds removed will cause engine damage from over heating .

Cylinder Head Cooling Fins

It is essential for performance and longevity of the air-cooled engine to keep the c yli nder hea d c ooling fins clean and free of obstruction. After every 8 hours of op eration, check the performance of the cooling system by starting the engine, holding a hand adjacent to the cylinder head, and f eeling the cooling airflow. If there is little or no airflow, clean the cooling fins as described below.

Engine Air

Intake Screen

Engine Air Intake Screen

and Coolin g Fi n A ccess Panel s

Cylinder

Head

Check Airflow

with Hand

Cooling System Airflow

Maintenance Instructions CLEANING

Grass Buildup in Mower Housing

Non-Tilting Decks

DANGER

Before raising or removing the mower deck for cleaning, stop the engine, remove the ignition key, and disconnect the spark plug wires.

1. Raise the deck and secure it in the UP position by hooking the deck lift rod into the body bracket below the counterweight s prin g cli p. The rod is hinged and is stowed along the footres t of the deck carrier frame. A hitch pin on the end of the rod is used to secure it in place with the deck raised.

DANGER

NEVER operate cutter blades with the deck in the raised position.

NOTE: While some degree of material buildup

in the mower deck housing can be tolerated, a point is finally reached where cutting quality

deteriorates and clogging begins to occur

because of too much bui ldup on the baff ling and housing.

Tilt-Up Dec ks

DANGER

Before raising or removing the mower deck for cleaning, stop the engine, remove the ignition key, and disconnect the spark plug wires.

1. Raise the deck lock lever handl e on each side of the carrier frame and pull out to release carrier frame for tilting action.

2. Using the carrier frame lift handle, raise deck to the TILT -UP position and insert the deck ho ok into the tilt-up latch on the tractor body.

Counterweight

Spring Clip

Deck Lift

Rod

Body

Bracket

Deck Secured in UP Position

-2. Clean grass buildup underneath the deck using

a pressure washer (and scraper if required). NOTE: If the buildup is severe, it may be eas ier

to clean the deck by removing the deck assembly from the tractor and standing the deck as-

sembly on its “nose”.

Tilt-Up Latch

Tilt-Up Hook

on Deck

Deck Lock Lever

Deck Secured in TILT-UP Position

DANGER

Do not operate the mower with deck in tiltup position. Do not move the tractor with the deck in the tilt-up position.

3. Clean grass buildup underneath the deck using a pressure washer (and scraper if required).

Maintenance Instructions CLEANING

NOTE: While some degree of material buildup in the mower deck housing can be tolerated, a point is finally reached where cutting quality

deteriorates and clogging begins to occur

because of too much bui ldup on the ba ff ling and housing.

4. Lower the deck to the normal operating position and re-engage the deck lock levers.

CAUTION

Do not operate machine with deck tilt-up pivot joint unlocked.

GHS Blower

Normally , the GHS blower operates with no maintenance or cleaning. However, when mowing gras s that is dirty and damp (especially springtime mowing), a deposit of dirt may accumulate inside the blower housing, causing wear and binding of the blower wheel. When o perating in the se c onditions,

inspect the blower frequently for dirt buildup. NOTE: A visual clue of binding of the blower wheel

is the blower blade tips are polished from rubbing on dirt.

IMPORTANT: With the belt removed, t he bl ower wheel must spin freel y . Any bi nding or drag- ging of the wheel is an indication of dirt buildup. This buildup must be cleaned to avoid abrasive wear of the blower blades, excessive power loss and eventual loss of blower performance (cl ogging).

2. Use a pressure washer or water spray, and direct the spray inside the blower housing against the blower blades. Water pressure will cause the blower wheel to begin to spin and the combination of s pinning act ion and water w ill eff ec tively wash the inside of the housing. Spray may be directed against the blower blades vertically and horizontally to cause rotation in both directions for thorough washing action. Wash blow- er until the blower wheel spins freely in both directions.

3. Reinstall the GHS blower drive belt by reversing the removal procedure.

Belt Tightener

Idler Pulley

Blower

Drive Pu lley

Chassis

Frame Hook

When a dirt deposit is found, use a high pressure washer or water spray to clean the inside of the housing as follows:

DANGER

Before attempting to wash the blower, stop the engine, remove the ignition key, and disconnect the spark plug wires.

1. Remove the GHS blower d rive belt by un hook ing the belt tension spring from the hook on the chassis frame (located above the blower pulley). Lift the belt tightener idler pulley up and roll the belt off of t he blower pulley . The belt should be clear of the blower pulley, allowing free movement of the blower wheel.

GHS Blower

Drive Belt

Blower

Pulley

Collapse Blower Belt Tightener

to Remove GHS Blower Drive Belt

GHS Exhaust Screen

Refer to Cleaning the GHS Exhaust Screen in Operating Instructions.

Belt

Tens ion Spring

Maintenance Instructions

CLEANING/

CHECKING/SERVICING

Hydrostatic Transmission Cooling Fins

Keeping the cooling fins on the hydrostatic transmissions clean and free of obstruction is es sential to avoid overheating the transmission fluid and shortening transmission life. The cooling fins shoul d be checked every 100 hours; and cleaned if necessary.

To clean the fins, use compressed air and/or a pressure washer. The cooling fins extend all the way around the housing -- the fins underneath need to be clean as well as the more visible fins above. Also, pay close attention to the area under the drive pulley.

IMPORT ANT : In case an oil leak develops on the input shaft, the cooling fan blowing dusty air and oil on the transmission will quickly pack the cooling fins with oily dirt. If this condition occurs, repl ace the seal immediately to avoid overheating and damaging the transmiss ion. The input shaft assembly and seal are easily replaced without removing the transmission from the machine.

An additional procedure in maintaining transmission cooling is to inspect the cooli ng fans. Repl ace the fan(s) if blades are missing or damaged.

CHECKING/SERVICING

DANGER

To prevent accidental starting of the engine when servicin g or adjusting the machine, remove the key from the ignition switch and disconnect the spark plug wires.

Security of Air Filtration Components NOTE: The following inspection is only an exter-

nal inspe ction and should be done without “dis-

turbing” the filtration components. On a daily basis, visually inspect the external condi-

tion of the complete air cleaner system. The following items should be inspected:

1. Check the security of the engine air cleaner cover and inspect it for damage and make sure it seals properly with the engine baseplate. Improper sealing may be caused by a bent baseplate.

Cooling Fan

Cooling Fins

Hydrostatic Transmission Cooling Fins

2. Check the Donaldson Radialseal™ air cleaner canister for damage. Make sure the cover is in place and the cover latches are secure - do not run the engine without the air cleaner cover in place and secure.

3. Inspect both air intake hoses for cracks, ni cks, cuts, etc., and check the hose clam ps for t ightness.

Battery NOTE: F or initial ba ttery se rvice du ring setu p, re-

fer to Battery Service in Assembly Instructions.

Electrolyte Level

The battery electrolyte level shoul d be chec ked after every 25 hours of operat ion. To check electro-

lyte level:

1. Remove battery cell filler caps.

2. Check the electrolyte level. If the level is below the bottom of the vent well, fill with drinking water to the bottom of the vent wells [1/4 to 1/2 in. (6 to 13 mm) above the plates].

Maintenance Instructions

CHECKING/SERVICING

3. Replace filler caps. IMPORT ANT: DO NOT overfill the battery. Electro-

lyte will overflow through the vented caps onto parts of the machine and WILL result in severe corrosion.

Cleaning the Terminals

If battery terminals are corroded, remove batter y from the mower. Using a wire brush, remove corrosion with a solution of one part baking soda and four parts water. Rinse with clean water. Coat the terminals with petroleum jelly or terminal p rotector spray to retard further corrosion.

Charging the Battery

Check the battery charge by measuring the specific gravity of electrolyte; if specific gravity is less than

1.225, the battery will need to be charged as follows:

2. After charging the battery, use drinking water to adjust the electrolyte level to t he bottom of the vent wells [1/4 to 1/2 in. (6 to 13 mm) above the plates].

DANGER

Tire Pressure

Inflate tires to pressures shown below: Deck Caster Wheel = 20 PSI (137 kPa)

Drive = 15 PSI (103 kPa) Rear = 20 PSI (137 kPa)

Sharpen Mower Blad es Check mower blade(s) for straightness, sharp-

ness, condition of the cutting edge, and balance every 10 hours of operation (or more often when

mowing abrasive type grass or operating on sandy soils). Replace blades if worn, bent, cracked, or

otherwise damaged (refer to REPLACING/RE- PAIRING the Mower Blades in this section). Use the

following procedure to check and sharpen blades: NOTE: Keep blades sharp - cutting with dull

blades not only yie lds a poor mowing job but sl ows the cutting speed of the mower and causes ext ra wear on the engine and blade drive by pulling hard.

1. Stop the engine, remove ignition key, and disconnect the spark plug wires before raising the mower deck to service blades.

2. Raise the deck and secure it in ei ther the UP position using the deck lift rod (non-tilt deck) or in the TILT-U P position. Refer to CLEANING the Grass Buildup in Mower Housing in this section for deck raising instructions.

BATTERIES PRODUCE EXPLOSIVE GASES

• Charge the battery in a well -ventilated

area, so that gases produced while charging can dis sipat e.

• Keep sparks, flames, and sm oking ma-

terials away from the battery at all times.

• Make sure the battery cap vents are open

(check manifold vent on each cap).

• Make sure the battery charger is un-

plugged before connecting or disconnecting cables to the battery.

DANGER

NEVER operate cutter blades with the deck in the raised position.

3. Check the blades f or strai ghtn ess by marking the blade tip position inside the deck housing, and then rotating the opposite end of the blade to the same position and comparing. If the difference in blade tip tr ack is more than 1/8 in.

(3 mm), the blade is ben t and shoul d be replaced.

Maintenance Instructions CHECKING/SERVICING

6. Check blade balance by positioning the blade

WARNING

DO NOT try to straigh ten a blade that is bent. NEVER weld a broken or cracked blade. ALWAYS replace with a new blade to assure safety.

4. If the blade cutting edge is dull or nicked, it should be sharpened. Remove blades for sharpening by grasping the end of the blade using a rag or a thick, padded glove, while loosening and removing the nut, lock washer, and flat washer that mounts the blade.

5. Grind cutting edge at the same bevel as the original. Sharpen only the top of the cutting edge to maintain sharpness.

NOTE: Blades can be sharpened with an electric blade sharpener , conventional electric grinder , or a hand file.

horizontally on a blade balancer or use a nail or shaft through the center hole. If either end of the blade rotates downward, grind (rem ove) metal on that end until the blade will balance. The blade is properly balanced when neither end drops. Balance of a blade is generally maintained by removing an equal amount of material from each end of the blade when sharpening.

Blade Balancer

CAUTION

ALWAYS wear eye protection and gloves when sharpening a blade.

Sharpen at

Original 30° Angle

30°

Sharpen on Underside

Mower Blade Profile For Sh arp ening

Intersection

Wea r Area

Wing

Do Not Grind or

Tip

Blade Balanced on Magnetic

Wall-Mounted Balancer

7. Mount the blade with wing tips pointing up into the housing. Reinstall the blade, washer, lock washer, and nut. Tighten the nut to 60 ft-lb

(81.3 N

NOTE: When reinstalling blades on GHS models,

remember, the blades turn toward each other (counter-rotate) and the RH and LH blade cannot be switched. Check for proper blade rotation before installing blades on the deck. Ref er to Blade Rota-

tion for GHS Mower Deck illustration shown in Clogging Checklist in Operating Instructions for

correct blade rotation.

Drive Belts

Raise the body and inspect the condition of the four (4) belts (3 belts on SD models) every 25 hours of operation - engine PTO drive, jackshaft drive, hydrostatic ground drive, and GHS blower drive. If the belts show signs of cracking or deteriorating, the belts should be replaced. R efer to REPLACING/ REPAIRING the Drive Belts in this section.

⋅m).

Maintenance Instructions

CHECKING/SERVICING/

REPLACING/REPAIRING

Mower Deck Gearbox Oil Seals

The mower deck gearbox seals should be inspected

every 25 hours for evidence of oil leaking; particularly the lower oil seal on the bl ade drive gearbox. This seal is protected by the trash guard on the

blade hub and seal protector plate on the housing, but is still vulnerable to seal damage due to operating in an adverse environment. The mower blade must be removed for inspection of the seal, so it is recommended to inspect the gearbox seals when blades are removed for sharpening. If an oil leak is noted, the seal shoul d be replaced and the gearbox assembly relubricated. Refer to Mo wer Deck

Gearbox Lubrication in this section. Spar k Plugs Every 200 hours of operation, remove the spark

plugs, inspect, clean, and reset the gap (or replace with new plugs). Before removing the spark plugs, clean the area around the base of the plugs to keep dirt and debris out of the engine. Clean spark plugs with a wire brush. DO NOT use an abrasive grit type cleaner. If the electrodes are burned short or pitted, replace plugs with Champion equivalent). Check spark plug gap with a wire-type feeler gauge and set the gap at 0.030 in. (.76 mm). Reinstall and tighten to between 18 and 22 ft-lb (24.4 to 29.8 N

⋅m).



type RC12YC (or

Check the function of the cutter blade brake (and blower brake on GHS models) by engaging the blade clutch (PTO), operating the engine at full throttle, then disengaging the clutch and measuring how quickly the blades stop. Watch the rotation of the blade drive shaft and blower pulley as a visual indication that movement has stopped. If the brake is working

properly, all rot ation will stop five (5) seconds after disengageme nt of the clutch. If the brake sys-

tem malfunctions - blades do not stop in five (5) seconds - adjust or repair the brake before operating the mower. Refer to ADJUSTMENTS of Blade

Clutch (PTO) in this section. REPLACING/REPAIRING

DANGER

To prevent accidental starting of the engine when replacing parts or repairing the machine, remove the key from the ignition switch and disconnect the spark plug wires.

IMPORTANT: ALWAYS use genuine factory re-

placement parts. Substitute parts CAN result in product malfunction and possible injury to the operator and/or others.

Fuel Lines and Clamps Every year, inspect the fuel supply line from the tank

to engine for deterioration or damage. Also, inspect the fuel line clamps for tightness. Good preventive maintenance calls for complete replace-ment of fuel lines and clamps every two (2) years.

Engine Sta rter Yearly or every 500 hours disassem ble and c lea n

the solenoid shift starter. Refer to the Kohler Service Manual for this procedure or conta ct an a uthorized Kohler engine dealer to perform this service.

Blade Brake Action

WARNING

It is important to check and maintain blade brake action for safe operation of the machine.

Drive Belts

Ther e a r e four (4) individual belts on GHS models or three (3) belts on SD models:

• Jackshaft Drive Belt

• Engine PTO Drive Belt (3 Groove Power Band)

• GHS Blower Drive Belt (GHS Model Only)

• Hydrostatic Ground Drive Belt

The belts may be removed and replaced usi ng the procedures described on the following pages.

Maintenance Instructions REPLACING/REPAIRING

Jackshaft Drive Belt

Engine PTO

Belt

Hydrostatic Ground

Drive Belt

GHS Blower Belt

(GHS Model Only)

Belt L ocations

Maintenance Instructions REPLACING/REPAIRING

Engine PTO Drive Belt (3 Groove Power Band)

1. To re move the engine PTO drive belt: a. Remove the jackshaft drive belt from its

idler pulley (by pushing down on idler pulley) and let the belt drop down out of the way.

NOTE: Step (a) is not essential to removing the PTO belt, but it makes more room to work with the PTO belt.

b. Push the clutch idler pulley down (until the

PTO belt tightener stop block contacts the frame) and then shift the belt off the idler pulley (to the inside).

Pull UP to Engage

c. Raise the clutch lever (engage position) to

lift the clutch idler away from the belt.

d. Next remove the belt from the engine pul-

ley and then the PTO drive pulley.

2. Install the PTO drive belt by reversing the remov al procedure.

IMPORTANT : Make sure the belt is installed inside the four (4) belt guide pins.

Refer to ADJUSTMENTS of Blade Clutch (PTO) in this section to check and make the fol-

lowing adjustments: a. Clutch engagement for proper belt tension b. Clutch disengagement and brake action

Clutch

Linkage

PTO Belt Tightener

Stop Block

PTO Belt

Tighte ner Arm

Blade Clutch Lever

in the DOWN Position

Belt Guides

(Bottom Guide Not Visible)

Engine

PTO Belt

Belt

Guide

Engine

Pulley

Clutch Idler

Pulley

Belt

Guid e

PTO Drive

Pulley

Engine PTO Drive Belt Removal

Maintenance Instructions REPLACING/REPAIRING

Jackshaft Drive Belt

b. Relax the belt by depressing the spring-

1. To remove the jackshaft drive belt:

loaded idler arm.

a. Remove the engine PTO drive belt, as

described in previous section.

Push Idler Pulley Down to R e lax Belt

Jackshaft

Jackshaft Drive Belt

Tens ion Spring

Jackshaft Drive Belt (Disengaged)

c. Roll the belt off the jackshaft pulley and

remove.

Idler Pulle y

Engine

Pulley

2. Reverse the removal procedure t o replace the jackshaft drive belt.

Idler Arm

Jackshaft

Jackshaft Drive Be lt

Tens ion Spring

Jackshaft Drive Belt (Engaged)

Engin e

Pulley

Maintenance Instructions REPLACING/REPAIRING

GHS Blower Drive Belt

Blower Drive

Pulley

GHS Blower

Drive Belt

Belt Tightener

Idler Pulley

(Disengaged)

GHS Blower Drive Belt Assembly (Disengaged)

Blower Drive Belt Spring Removal

2. Reverse the procedure to install the GHS blower drive belt and spring.

Blower

Pulley

Chassis

Frame Hook

Spring

Removed

Spring

Attached

Idler Pulley

(Engaged)

GHS Blower Drive Belt Assembly (Engaged)

Maintenance Instructions REPLACING/REPAIRING

Hydrostatic Ground Drive Belt

1. To re move the hydro static ground drive belt: a. Raise the spring-loaded belt tightener arm

and idler pulley to relax belt.

Belt Tightener Arm

Idler Pulle y

Hydrostatic

Ground Drive Belt

b. Slide belt off pulleys, then release the idler.

Jackshaft

Transmission

Drive Pulley

Spring

Hydrostatic Ground Drive Belt Assembly (Disengaged)

2. Reverse the procedure to install the hydrostatic ground drive belt.

Belt Tightener Arm

Idler Pulley

Hydrostatic

Ground Drive Belt

Spring

Hydrostatic Ground Drive Belt Assembly (Engaged)

Maintenance Instructions REPLACING/REPAIRING

Fuel Filter

Model MT is equipped with an in-line fuel filter. Visually inspect the filter periodically, and replace the filter yearly.

In-Line

Fuel Filter

Fuel Filter Location

IMPORTANT: Replace the fuel filter only in a clean

area where the fuel line and connections will not be contaminated by any dust and dirt.

Turn Valv e

Clockwise to Close

Fuel Shut-Off Valve and Filter

Blade Overload Shear Bolts NOTE: Shear bolts are not used on the DSD62

mower deck. The cutting blade is keyed to the blade hub by two

(2) shear bolts (10-24 x 5/8 in. stainless steel machine screws). These bolts are designed to shear and protect the blade drive gearbox from damage if the blade encounters a shock load.

DANGER

Gasoline is extremely flam m able an d can be highly explosive. To minimize danger:

• Use only an approved fuel container for

gasoline.

• DO NOT allow open flames or sparks

near the machine while performin g maintenance or refueling; DO NOT smoke while working with fuel.

• Wipe up spilled gasoline immediately

and completely.

1. Close the fuel tank shut-off valve.

2. Expand and slide cla mps on either side of the filter away from filter and pull fuel lines off filter.

3. Replace filter.

4. Open fuel tank shut-off valve.

Cutting Blade

Shear Bolts

Cutting Blade Shear Bolts

NOTE: Tightening the 5/8-18 blade mounting nut to 60 ft-lb (81.3 N⋅m) is also important for proper shock load protection. It is important to not overtighten the mounting nut since this defeats (over-

rides) the function of the shear bolts. If these bolts shear, remove the blade and install new

bolts. Refer to CHECKING/SERVICING in this section for Sharpen Mower Blades which describes the blade removal and installation procedure.

Maintenance Instructions REPLACING/REPAIRING

After reinstalling the blad e, check b lade timing by moving blades through one (1) complete revolu- tion. Make sure blade tips pass clear of each other. If timing is incorrect, refer to Mower Deck Gearbox

Replacement in this section. Mower Blades

Mower blades are removed and remounted as described in Sharpen Mower Blades instructions. During the course of sharpening and inspecting mower blades, if there are any of the following con-

ditions of wea r or damage, blades should be replaced for reasons of safety and performance of the

machine:

• An excessive amount of the flat section of the

blade has been ground away (removed) when the blade is sharpened . Replace the blade wh en less than a 3/4 in. (19 mm) flat section remains at the blade tip.

• Examine ends of the blade carefully, especially

the intersection where the flat section of the blade

turns up to form the “wing tip” (refer to Mower Blade Profile for Sharpening illustration in Sharpen Mower Blades instructions). Since sand and abra-

sive material can wear metal away in this area, the blade should be replaced wh en metal thickness

has worn to 1/16 in. (1.6 mm) or less.

DANGER

When blades are operated over sandy soil, and if blades are a llowed to wear, a

“slot” may be worn into the wing tip of blade. Eventually a piece of the blade may break off creating a serious po tential for injury or damage .

DO NOT try to strai ghten a blade that is bent. NEVER weld a bro ken or cracked blade. ALWAYS replace with a new blad e to assure safety.

Reinstall the blades following procedure from Sharpen Mower Blades instructions. If blades are re- placed, always use Walker original equipment blades to ensure safety and optimum performance. The quality and performance of replacement blades offered by othe r manufact urers cannot be g uar- anteed, they could be dan gerous.

ALWAYS use genuine factory replacement parts. Substitute part s CAN result in product m alfunction and possible injur y to the operator.

Mower Deck Gearbox Replacement NOTE: Deck gearbox(es) may be changed with

the deck mounted on the tractor. However , the deck may be removed from the tractor making the overall job of removing the gearbox assembly easier. Refer to

Deck Install ation

verse the procedure to remove the deck. T o replace the mower deck gearbox(es), use the fol-

lowing procedure:

1. Remove mower bl ades. Refer to proc edure in

Sharpen Mower B lade instructions.

WARNING

CAUTION

in Assembly Instructions and re-

• Check the blades for straightness by marking

blade tip position inside the deck hous ing and then rotating the opposite end of the blade to the same position and comparing. If the difference in blade tip track is more than 1/8 in. (3 mm), the blade is bent and should be replaced.

• Inspect the blade surface, especially in formed

areas, for cracks. Replace the blade if an y cracks are found.

2. Remove gearbox cover (two machine screws) and PTO shaft guard (two 1/4-20 bolts).

3. Remove two (2) 3/8-16 mounting bolts from each blade drive gearbox and lift the entire gearbox assembly from the deck (including PTO drive shaft).

4. Remove the screws securing the cover plates on the gearboxes and remove t he cov ers. Remove all covers to be sure oil is completely drained from all gearboxes.

Maintenance Instructions REPLACING/REPAIRING

NOTE: With oil flow throughout the unitized gear drive assembly; if one gearbox has internal damage or excessive wear, the remaining gearboxes and connector tubes should be com pletely disassembled a nd thoroug hly flus hed out wi th solvent before reassembly.

5. Drain and properly dispose of oil.

6. Remove the four (4) bolts mounting the gearbox to the connector tube and s lide the gearbox off the splined drive shaft coupling.

7. Install the new gea rbox on the spl ine coupling of the drive shaft. Establish correct timing of the blade drive gearboxes by setting flats on the output shaft at 90 degrees when connecting the gearbox(es) to the spline c oupling. Make sure the timing is correct before proceeding with assembly.

(Shown with Gearbox Cover Remo ved for Clarity)

Mower Deck Gearboxes

GHS Blower Assembly (and/or Blower Wheel)

GHS Blower Assembly Removal

Mower Deck

Gearboxes

Connector Tubes

8. Reinstall the four (4) bolts mounting the gearbox to the connector tube but do not tighten them at this time; leave connector tube bolts fingertight.

9. Position the gear drive assembly on the deck and install the 3/8-16 bolts mounting the entire assembly. Leave the mount bolts finger-tight.

10. Torque all the connector tube bolts to 80 in-lb (9 N

⋅m); then tighten the deck mount bolts.

NOTE: This fastener t ightening sequen ce aligns the gearbox assembly wit h the deck housing and eliminates the possibility of mounting the unitized assembly in a bind.

11. Fill gearbox assembly with oil. Refer to Mower Deck Gearbox Lubri cation in this section for instructions.

12. Reassemble remaining items onto deck to complete in stalla t ion. After installing bla des, check that the blade timing is correct by moving the blades through o ne (1) complete revolution. Make sure blade tips pass clear of each other.

1. Remove the mower deck. Refer to

lation

in Assembly Instructions and reverse the

procedure to remove the deck.

Skid Bar

Mounting Bolts

Blower Assembly

Remove Skid Bar for

GHS Blower Removal

2. Remove the blower facepl ate by removing six (6) 1/4-20 nuts.

Deck Instal-

Skid Bar

3. Remove the GHS blower drive belt. Refer to REPLACING/REPAIRING the Drive Belts in this section for instructions.

Maintenance Instructions REPLACING/REPAIRING

4. Remove the blower assembly from the chass is as follows:

a. Remov e the blower skid bar by removing

front and rear mounting bolts from the skid bar (underneath the blower) and removing the bolt connecting the blower housing to the skid bar.

b. Remove the blower belt tightener idler arm

assembly by removing the pivot bolt.

c. Remove two (2) bolts mounting the bl ower

housing to the frame.

d. Lower the blower assembly straight down

out of the chassis frame and remove.

Blower Wheel Removal

When required, replace the blower wheel using the following procedure:

Wheel Puller

Hooked to Lugs

on Bearing Housing

1. Loosen blower pulley set screws and remove the pulley using a wheel puller.

2. Remove the locking collar from the back bearing (closest to the pulley) by loosenin g the set screw and rotating the collar counterclockwise (use punch to drive).

3. Press blower wheel out of the housing using a wheel puller hooked to lugs on the bearing housing. The bearings have been secured in the housing with a retaining compound - Loctite RC/680, and considerable force will be required to break this bond. After the bearings

have “broken loose” from the housing, only light pressure should be required to remove the wheel assembly out of the housing.

NOTE: It may or may not be possib le to remove the front bearing from the blower wheel without damaging it. If the bearing is damaged, it will need to be replaced along with the wheel.

Pressing Blower Wheel Out of Housing

Blower Wheel Installation

1. T o instal l the blower wheel, reverse the removal procedures. The front be aring is mounted

on the blower wheel shaft, secured by a locking collar. D riv e t he locking co llar c lockwise wi th a punch, and tighten the set screw.

2. Press blower wheel and front bearing into the blower housing. Use Loctite

compound on the outer bearing race and inside the bearing housing.

3. Press the rear bearing into place, using Loctite on both the outer bearing race and the housing.

4. Install the locking collar on the rear bearing and install the blower pulley to complete the blower assembly. Torque the blower pulley set screws to 250 in-lb (28.3 N

⋅m).

RC/680 retaining

GHS Blower Assembly Installation

Reinstall the blower assembly into the mower using the reverse procedures of

Removal

GHS Blower Assembly

Maintenance Instructions ADJUSTMENTS

ADJUSTMENTS

DANGER

If the engine must be runn ing to perfo rm a maintenance adjustment, keep hands, feet, and cl othing from moving parts. DO NOT wear jewelry or loose clothing.

Safety Switches

There are three (3) safet y interlock s witches on th e trac to r . Use t he p a nel n ut s o n th e swi t ch bo dy t o p osition the switch for proper activation of the switch. The adjustment procedure for each switch is:

Seat Switch

Adjust switch position in body panel to achieve a 1/32 to 1/16 in. (.79 mm to 1.59 mm) air gap between the switch plunger and seat frame with no weight on the seat. Test for proper operation.

FSC Neutral-Park Switch

1. Place the FSC in NEUTRAL-PARK position.

2. Adjust s witch t o the point where the s tarter engages when the ignition switch is turned to the start position.

3. Adjust switch position forward an additional 1/2 to 1 turn of the panel nuts.

NOTE: If the switch cannot be adjusted forward enough to achieve proper function, it may be necessary to bend the switch mounting bracket slightly.

PTO Switch

With the PTO engaged, adjust switch to achieve a 1/64 to 1/32 in. (.40 mm to .79 mm) gap (plunger extension) between the switch body and the actuator plate.

Tail Wheel Bearing Preload

Preload the tail wheel bearings by tightening the axle nut until the wheel begins to tighten as it turns (not spin freely), then loosen the nut 1/2 to 1 turn. The wheel should spin freely without excessive end play. Lock the axle nut with the set screw in the nut.

Maintenance Instructions ADJUSTMENTS

Blade Clutch (PTO)

Clutch Engagement/Belt Tension

The clutch engagement and PTO belt tension are adjusted using the clutch actuator rod. Initially, after installing a new PTO belt, after 10 hours and every 100 hours thereafter, check and adjust for the two dimensions in the clutch actuator rod as shown in the

PTO Clutch Engaged and PTO Clutch Disengaged illustrations.

Clutch

Actuator Rod

Adjust the bolt head clearance [1/4 in. to 3/8 in. (6.35 mm to 9.53 m m)] first (clutch engaged ), then adjust uncompressed spring length (clutch disengaged). The spring must be adjusted to an uncompressed overall length of 2-1/8 in. (54 mm). If adjustments are needed more frequently than every 100 hours to maintain the linkage dimensions, it may suggest problems with pulley wear or belt misalignment.

1/4 in. to 3/8 in.

(6.35 mm to 9.53 mm)

PTO Belt

Tighte ner Arm

Locknut

Spring

Compressed

Blade Clutch

Lever Engaged

PTO Clutch Engaged

Maintenance Instructions ADJUSTMENTS

Clutch Disengagement/Brake Action

WARNING

It is important to check and maintain blade brake action for safe operation of the machin e.

Adjustment

Nut

2-1/8 in. (54 mm)

The declutched or disengaged position of the blade clutch idler pulley is adju stable and is set to give belt release without excessive slack and to apply the blade brake. The blade brake is activated by the brake actuator rod linkage to the clutch idler pulley mechanism. The brake is designed to stop the blades within five (5) seconds after disengaging the clutch.

Spring Overall Length

Knuckle

Joint

Blade Clutch

Idler Pulley

Spring

Uncompressed

Blade Clutch

Lever Disengaged

PTO Clutch Disengaged

Maintenance Instructions ADJUSTMENTS

Use the following procedures to check and adjust clutch disengagement and brak e actio n:

Pulley Travel

Stop Block Eccentric Adjustment - Step 1

Use the stop block attached to PTO belt tighte ner arm to set the bottom position of the clutch idler pulley in the disengaged position. The stop block should contact the chassis to stop the clutch id ler pulley from moving further down in the d isengage d position . If the s top block is no t contacting the chassis in the disengaged position, it will be necessary to loosen the brake band adjustment nut.

The stop block is an “eccentric” block that will allow four adjustment positions from 5/16 in. (8 mm) to 11/16 in. (17 mm).

Stop

Block

Stop Block

Contacting Frame

Clutch Idler Pulley Travel Adjustment

Engage

Disengage

1 in. to 1-1/2 in.

(25 mm to 38 mm)

11/16 in. (17 mm)

7/16 in.

(11 mm)

PTO Belt Tightener Stop Block Adjustments

9/16 in.

(14 mm)

5/16 in. (8 mm)

Clutch Idler Pulley Travel Adjustment - Step 2

Adjust the stop block to give 1 in. (25 mm) to 1-1/2 in. (38 mm) pulley travel from “clutch engaged” to “clutch disengaged”. T o check and adjust the pulley travel, first engage the clutch, then measure the distance the pulley moves down as the clutch is disengaged and the stop block contacts the frame.

Blade Brake Band Adjustment - Step 3

After the pulley travel is set, make the following adjustment as needed:

1. Adjust the blade brake band, using the adjustment nut until there is a gap of a pproximately 1/8 in. (3 mm) between the PTO belt tightener stop block and chassis. If there are not enough threads on the brake band for adjustment, lengthen the brake actuator rod.

Blade Brake Band

Adjustment Nut

Brake Actuator

Rod

NOTE: The importance of this adjustment is if the pulley travel is excessive and the bolt develops too much slack, the belt will derai l when dis engaged.

Blade Brake Band Adjustment

Maintenance Instructions ADJUSTMENTS

Blade Clutch

Idler Pulley

Stop Block

PTO Belt Tightener

Chassis

Blade Brake Band Adjustment

NOTE: The length of t he actuator rod is adjusted

by disconnecting the b ottom clevis and shortenin g or lengthening accordingly. The standard pre-set length of the actuator rod is set at the factory at 8-1/4 in. (209 mm).

1/8 in.

(3 mm)

2. After adjustments are complete, check blade brake action as described in CHECKING/SER- VICING the Blade Brake Action in this section. If blades do not stop within five (5) seconds, check the following:

a. Recheck 1/8 in. (3 mm) gap between s top

block and chassis.

b. Make sure clutch and brake linkage are

working freely (no binding). c. Check the brake band lining. d. Check the brake drum on the pulley. If

excessive wear is present, it will be neces-

sary to replace worn parts.

Transmission Control IMPORTANT: The proper adjustment of the trans-

mission control stops is essential for efficient operation and life of the transmission. These stops are properly adjusted at the factory and s hould onl y require readjustment if the transmission or related control linkage is removed or changed.

NOTE: It would not be unusual for a new machine, after initial 5 or 10 hours of operation, to begin to not travel straight (this is due to the break-in of the transmissions). In this case, proceed to

Ground Travel Adjustment - Step 4

Straight

8-1/4 in.

(209 mm)

Brake Actuator Rod Adjustment

Locknuts

Bottom

Clevis

IMPORT ANT: The following adjustment procedures are sequential. Check and adj us t eac h func tion in the order given.

Set F orwar d Travel Limi t (S t op) - Step 1

1. Move the Forward Speed Control (FSC) lever to the most FORWARD posit io n.

2. Check clearance of the RH and LH steering lever actuator arms with the frame and adjust for- ward stop bolt so each lever clears the frame by at least 1/16 in. (1.6 mm). Clearance of the arm to the frame should be checked while ap- plying pressure back on the arm to remove any slack in the linkage.

Maintenance Instructions ADJUSTMENTS

3. Tighten the jam nut on the forward travel stop adjusting bolt.

CAUTION

Steering Lever

Actuator Arms

Forward Travel

Stop Bolt

Steering

Adjustment Nut

Forward Speed Control Stop

and Steering Lever Adjustment

Steering Lever End Play Adjustment - Step 2

1. Position the FSC lever to the m os t FORWARD position.

2. Loosen the adjustment nut on each steering lever actuator until end play develops between the lever actuator and the adjustm ent nut (sliding on transmission control rod).

3. Hold the actuator back as shown (against the spring pressure) and tighten the nut to the point where the end play is removed and then tight-

en two additional turns.

IMPORTANT: If t he adjustment nut is too loose

(end play exists) excessive loads are placed on transmission internal control stops. If the adjust- ment nu t is to o tigh t (preferred condition), the maximum forward travel speed is reduced.

NEVER attempt to disconnect an y safety devices or defeat the purpose of these safety devices.

FSC Act uator

Clevis

LH Steering Lever

(For Orientation)

Neutral Function Adjustment

3. If drive wheels are moving, stop the engine and adjust the FSC neu tral stop by adjusting the FSC actuator clevis (see Neut ral Fu ncti on A d- justment photo for clevis location). If the drive wheels are moving backward, remove the cotter pin and clevis pin and screw the clevis forward. If the drive wheels are moving forward, screw the clevis backward. Restart the e ngine and

check for wheel movement (several “trial and error” adjustments may be required). At this point it may not be possible to adjust both wheels stationary since the differential adjustment has not been made. (This is covered by the

Ground Travel Adjustment

case, the neutral adjustment should be made for one wheel stationary and the other moving for- ward slightly.

Neutral

Safety Switch

- Step 4.)

Straight

In this

Neutral Function Adjustment - Step 3

1. Move the FSC lever to the NEUTRAL-PARK position (rear travel limit).

2. Start the engi ne (operate first at idle and then normal operating speeds) and check for move-

ment of the drive wheels. NOTE: If the engine will not st art, check and ad-

just the neutra l safet y switc h (see it em 4 below).

4. Check and adjust the neutral safety sw itch for closure and function with the FSC in neutral (the engine will not start when the switch is open). Use panel nuts on the switch body to adjust switch position for closure in neutral. Refer to adjustment description for Safety Switch- es in this section.

Maintenance Instructions ADJUSTMENTS

Straight Ground Travel Adjustment - Step 4

1. Sit in the seat, start the engine (operate at normal speed), and with the FSC in the NEUTRAL- PARK position check for forward movement of either drive wheel (if either wheel moves backward, refer back to

justment

steering lever adjustment nut on the side of the mower with the wheel moving forward

until wheel movement stops.

2. Check for straight ground tr ack on a level sur- face (with han ds off the steering levers). Set the FSC at several different speeds and observe if the mower moves in a straight line (use cement joint or other line on the groun d for reference).

NOTE: The final tracking adjustment is made with the mower moving, since the adjustme nt is

quite sensitive and is more easily “fine tuned” when moving.

3. If travel is not straight, tighten the adjustment

nut that is on the same si d e of the mower as the wheel that is moving too fast, e.g., the

mower tr acks to the r ight, indi cating t he LH wheel is moving t oo fas t, tight en the LH adjustm ent nut .

- Step 3

and readjust). Tight en the

Neutral Function Ad-

Forward Speed Control Friction Lock The FSC friction lock is adjusted to hold the select-

ed forward speed when the steering levers are

moved and yet the friction is not too heavy to ma ke moving the control difficult (too much friction). The procedure for chec king and adjusting the FS C friction lock is as follows:

FSC Act uator

Friction Washer

Friction

Adjustment Nut

Forward Speed Control Friction Lock

1. Place the FSC in the full FORWARD posit ion and pull both steering levers back; the FSC lever should not move. If the FSC lever moves back when the steerin g le vers are p ulled back, the friction ne eds to be increased.

End Wrench on Adjustment Nut

Straight Ground Travel Adjustment

2. With the steering levers held back, move the FSC lever back from the FORWARD position. With a proper amount of fri ction adjusted, the FSC lever should move back with a slight amount of resistance (friction). If the FSC lever movemen t is “stiff”, the friction needs to be

decreased.

3. The FSC friction is increased or decreased by tightening or loosening the friction adjust- ment nut. Loosen or tighten the nut and check

the control function until conditions of both steps 1 and 2 (above) are met.

Maintenance Instructions ADJUSTMENTS

Tilt-Up Deck Adjustable Stop

When the carrier frame hinge joint is properly adjusted, the deck lock levers should move in and out of the engaged and disengaged positions freely. All four hitch pins used for height adjustment should sit flush on the washers above the deck pin bushing. On a level surface, if any pin is sticking up (likely the front pins), tighten the opposite side or loosen the existing side to lower the pin. Adjustments are made by loosening the jam nut and tightening or loosening the set screws on the Deck Mount Pivot Brackets. Retighten the jam nut when the adjustment is complete.

Jam Nut

Set Screw

The fixed main jet carburetor is designed t o deliver the correct fuel-to-air mixture to the engine under all operating conditions. The high idle is set at the factory and cannot be a djusted. The low idle m ixture screw is also set at the factory and normally do es not need adjustment. The only adjustment normally made to the carburetor is to set the idle speed. However, if the engine exhibits any of the following symptoms, it may be necessary to adjust or service the carburetor: black, sooty exhaust smoke; lack of power; engine miss or backfire; hard t o start; rough running; stalls at low idle speed.

NOTE: Due to the technical requi rements of modern carburetors, refer to the K ohler Se rvice M anual or contact an authorized Kohler engine deale r for carburetor adjustments and service not described in this section.

CAUTION

ALWAYS use the proper engine service manual when working on the engine. Unauthorized maintenance operations or modifications to the engine MAY result in unsafe operating conditions.

Tilt-Up Deck Adjustable Stop

Carburetor

CAUTION

DO NOT change the engine governor settings or overspeed the eng ine. The governor has been factory set for maximu m safe engine operating speed.

Since the carburetor m ain je t is non-adjustabl e, for operation above 5000 ft (1,524 m ) abov e sea level, it may be necessary to change the carburetor main jet for best fuel economy and power . Contact an authorized Kohler dealer to change the carburetor main jet.

Engine Idle Adjustment

IMPORTANT: Some emission certified engines may not have an adjustable idle mixture needle valve; it is fixed from the factory and the adjustable screw is "capped". In this case, only the idle speed is adjustable and only Step 4 of the instructions below applies.

1. Gently close the idle mixture needle valve by turning it clockwise until it bottoms lightly.

IMPORTANT: The needle valve and carburetor seat may be damaged by turning the adjust- ment screw too tight.

Maintenance Instructions ADJUSTMENTS

2. Preliminary Setting: Turn the idle mixture needle valve out (counterclockwise) 1-1/2 turns from the closed position. This initial adjust- ment will allow the engine to be started and warmed up prior to the final adjustment.

Low Idle Mixture

Needle Valve

(May be Non-Adjustable)

Idle Speed

Screw

Carbure tor A dj ust me n t

Fixed Main Jet Under

Shutdown Solenoid

GHS “Full” Signal Horn with Grass-Pak

If the GHS “full” signal horn is not sounding or is not adjusted to sound when the catcher is full, the following troubleshooting an d adjustment instructions apply:

Switch

Troubleshooting (When Horn Fails to Operate)

1. Check the horn. a. Disconnect the two wires from the Grass-

b. Turn the ignition switch ON and move the

c. If the horn does not sound, the horn is bad

d. If the horn does sound, proceed to step 2.

Pak

switch electric connector plug and make a jumper wire connection between these wires (bypassing switch).

blade clutch to the ENGAGED position (engine not running) to make the horn sound.

and needs to be replaced.

DANGER

The engine must be running to adjust the carburetor for engine idle. To guard against injury, keep hands, feet, face, and other parts of body away from the muffler/ exhaust pipe, other hot parts of the engine, and moving or rotating parts of the engine.

3. Start the engine and allow it to warm up by running at 1/2 throttle for approximately five (5) minutes. The engine must be warm before making final settings.

4. Move the throttle to the idle position. Adjust idle

speed for 1200 rpm (± 75 rpm) by adjusting the idle speed screw. Check the idle speed using a tachometer.

5. With the engine idling, adjust the idle mixture by turning the idle mixture needle valve in (slowly) from the preliminary s etting until engi ne spee d decreases and then back out approximately 3/4 to 1 turn to obtain the best low speed performance.

6. Recheck idle speed after the final idle mixture adjustment.

2. Check the Grass-Pak a. Reconnect the wires to the Grass-Pak

switch electric connector plug.

b. Turn the ignition switch ON and move the

blade clutch to the ENGAGED position (engine not running).

c. Open the catcher back door and trigger the

Grass-P ak

switch.

vane by hand as it oscill at es.

WARNING

PINCH POINT - SPRING LOADED DOOR

When lowering the door on the GHS catcher, depress the safety latch on the side of the catcher as the door closes. The springs that hold the door closed during operation are very powerful, and the door CAN slam shut with considerable force.

d. The horn should sound as the switch is

moved in both d irectio ns. If the horn does not sound, the switch is bad and needs to be replaced.

Maintenance Instructions

ADJUSTMENTS/

ELECTRICAL SYSTEM

WARNING

DO NOT test the Grass-Pak® switch with the engine running. Projectiles CAN be thrown out of the grass delivery spout and CAN cause serious injury to byst anders or property dam a g e .

Grass-Pak

Vane Switch

Checking the Grass-Pak® Switch

Adjustment

Screw

Advance

Grass-Pak

ELECTRICAL SYS TEM For troubleshooting, refer to Wiring Diagram. IMPORTANT: Disconnect both battery cables be-

fore unplugging any wiring connectors or making repairs on the electrical system.

IMPORTANT: Disconnect the battery cables before unplugging and removing the instrument panel.

Switch Vane Adjustment

Delay

Adjustment (When Horn Sounds at the Wrong Time)

Very little, if any, adjustment to the Grass-Pak switch is required. However, to fine tune the timing of the full signal, the vertical position of the switch

vane is adjustable approximately 3/4 in. (1.9 mm).

1. Loosen the screw mounting the vane on the switch and adjust the position of the vane as follows:

a. Move the vane UP to delay the signal. b. Move vane DOWN to advance the signal.

2. Retighten the screw.

NOTE: It will not be possible to adjust the switch to give a signal at the precise instant the catcher is full for a wide variety of mowing condit ions. F or exam ple, wet h eavy grass will f ill the catche r differently than dry, fluffy grass, causing the signal to come on a little sooner or later than usual. Primarily, the

switch should be adjusted to give the “full” signal with a little advance warning before overfilling and cl oggi ng of the grass delivery chute begins (regardless of mowing conditions).

Circuit Breakers

A master circuit breaker is mounted on a bracket behind the battery. The circuit breaker may have either the manual or automatic reset function -- both types have been used. See Circuit Breaker Location photo.

30 Amp

Circuit Breaker

Mounting Bracket

Circuit Breaker Location

Maintenance Instructions ELECTRICAL SYSTEM

Wiring Diagram - Mo del MT

Operator’s Notes

LIMITED WARRANTY

FOR

WALKER

COMMERCIAL RIDER MOWER

1. WHAT THIS WARRANTY COVERS, AND FOR HOW LONG:

Walker Ma nufactur ing compan y will, at its o ption, re pair or replac e, without charge, an y part cover ed by this w arranty which is found to be defective in material and/or workmanship within one (1) year* after date of sale to the original retail purch aser un less t he p roduct is use d for rental purpos es, in whic h case this w arra nty is limite d to ninety (90) days. At Walker’s request, customer will make the defective part available for inspection by Walker and/or return the defective part to Walker, transportation charges prepaid. All parts and components of the Walker Mower are covered by this warranty except the follow ing compo nents which are warranted separ ately by their respective manufacturers:

Kohler Engine Kubota Engine Kawasaki Engine Eaton H yd r au li c Tran s mi ss ion Peerless Gearboxe s Battery Tires

The available warranties covering these items are furnished with each mower. Walker does n ot assume any warranty obligation, liability or modification for these items, which are covered exclusively by the stated warranty of the respective manufact urers noted above.

* An exte nded three (3) year warranty is offered on the Walker P/N 6200 Gear Axle Assembly.

2. WHAT THIS WARRANTY DOES NOT COVER:

A. This warranty does not cover defect s caused by depreciation or damage caused by normal wear, accide nts, improper

maintenance, improper use or abuse of the product, alterations, or failure to follow the instructions contained in the

Owner’s Manual for operation and mainten ance.

B. The customer shall pay any charges f or making service calls and/or for transporting the mower to and from the plac e

where the inspec tion and/or warranty work is perform ed.

3. HOW TO OBTAIN SERVICE UNDER THIS WARRANTY:

Warranty service can be arranged by contacting the dea ler where you purchased the mower or by contacting Walker Manufacturing Company, 5925 East Harmony Road, Ft. Collins, CO 80528. Proof of the date of purchase may be required to verify warranty coverage.

4. WARRANTY LIMITATION:

A. THERE IS NO OTHER EXPRESS WARRANTY. ANY WARRANTY THAT MAY BE IMPLIED FROM THIS

PURCHASE INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS HEREBY LIMITED TO THE DURATION OF THIS W ARRANTY AND TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED. Some states do not allow limitations on how long an implied warranty

lasts, so the above limitations may not apply to you.

B. WALKER WILL NOT BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL, OR SPECIAL DAMAGES AND/OR

EXPENSES IN CONNECT ION WITH THE PURC HASE OR USE OF T HE MOWER. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation(s) or exclusion(s) may not apply to you.

C. O n ly the warranty exp r e ss ed in this lim ited warra nty shal l apply an d no dealer, di s tr ib ut or, or individu al is author i ze d

to amend, modify, or extend this warranty in any way. Accordingly, additional statements such as dealer advertising or presentations, whether oral or wr itten, do not constitute warranties by Walker, and should not be relied upon.

D. This war ranty gives you specific legal rights, and you may also have other rights whi c h vary from state to s tate.

Lwa

104

LpA

OPERATOR

0.8g

Sound - Model MT20

Sound Test

Sound test conducted was in accordance with 79/113/EEC and was performed on 22 March 96 under the conditions listed:

General Condition: Clear Temperature: 50 (F) Wind Speed: < 5 mph (< 8 kmh) Humidity: 52% Barometric Pressure: 24.9" HG (759 mm Hg)

10 (C)o

Lwa

106

LpA

OPERATOR

Sound - Model MT25

Sound Test

Sound test conducted was in accordance with 79/113/EEC and was performed on 22 March 96 under the conditions listed:

General Condition: Clear Temperature: 50 (F) Wind Speed: < 5 mph (< 8 kmh) Humidity: 52% B a ro m e t r ic P re s s u r e: 2 4 . 9 " H G (7 59 m m H g )

10 (C)o

Vibration - Model MT20 Vibration - Model MT25

Vibration Level

Vibration levels at the op erators handles were measured in the vertical, lateral, and longitudinal directions using calibrated vibration test equipment.

T ests were performed on 22 March 96 under the conditions listed:

0.7g

Vibration Le vel

Vibration levels at the operators handles were measured in the vertica l, lateral, and longitudinal directions using calibrated vibration test equipme nt.

T es t s we r e per f orme d o n 2 2 M arch 96 un de r the conditions li sted:

General Condition: Clear

Temperature: 50 (F)

Temperature: 50 (F) Wind Speed: < 5 mph (< 8 kmh)

Wind Speed: < 5 mph (< 8 kmh) Humidity: 52%

Humidity: 52% Barometric Pressure : 24.9" HG (759 mm Hg)

Barometric Pressure: 24.9" HG (759 mm Hg)

10 (C)o

General Condition: Clear Temperature: 50 (F) Wind Speed: < 5 mph (< 8 kmh) Humidity: 52% Barometric Pressure: 24.9" HG (759 mm Hg)

10 (C)o

WALKER MFG . CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614

Walker MT User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

OWNER’S MANUAL

Safety, Assembly, Operating, and Maintenance Instructions

Model MT (20.0 / 25.0 HP)

(Covers Serial Numbers 95-21329 and on)

Foreword

Fill In By Purchaser

Serial Number

Tractor Serial Number Location

Serial Number

Mower Deck Serial Number Location

ENGINE SERIAL NUMBER LOCATION

Serial Number

MODEL

MT 20.0 HP MT 25.0 HP

MODEL

MT 20.0 HP MT 25.0 HP

MODEL

MT 20.0 HP MT 25.0 HP

MODEL

MT 20.0 HP MT 25.0 HP

Spring Clip

Deck Support Arms

Footrests

Tilt-Up Hook

Front View an d R ig ht Side View

Deck Lift Rod

Catcher Door

Muffler

Tailpipe

Rear View and Left Side View

Fuel Tank

Jackshaft

Fuel Filter

Fuel Pump

Oil Dipstick/Oil Fill

Muffler

GHS Blower

Battery

Top View (Engine Compartment)

a. Use an approved fuel container.

Safety, Control, and Instruction Decals are installed on the machine;

Each End of Mower Deck (5808)

SD Deck Discharge Shield (5848)

Engine Shroud (5855)

Rear of Grass Catcher Exhaust Screen (5869)

Rear Cross Member of Front Body (8825)

Safety, Control, and Instruction Decals are installed on the machine;

Deck Carrier Frame (8647)

Deck Gearbox Cover (5807-1)

Deck Carrier Frame (5865)

Top of Blower Housing (5819)

Gear Axle (5810-1)

On Engine (6810)

Right Side, Below Operator Seat (7809)

Left Side of Operator Seat (8819)

Left Side of Operator Seat (7819)

Deck Carrier Frame (8653)

Instrument Panel (8823)

Fender, RH Side (7802)

Tire Installation (Tractor)

Battery Service

Wet Battery Service

Dry Battery Service

Battery Charging

Battery Installation

Mower Deck Assembly

Deck Caster Wheels Installation

Battery Installation

Spacer Washer

Deck Caster Wheel Installation

Deck Discharge Shield Installation (Side Discharge Models Only)

Attach Shiel d

Deck Discharge Chute Installation (GHS Rear Discharge Models Only)

PTO Shaft Guard Installation

Mower Deck lnstallation on Tractor

Deck Install ation