Walker MT 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)

™

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

+ 64 hidden pages