Walker MC 18 HP User Manual
OWNER’S MANUAL
Safety, Assembly, Operating, and Maintenance Instructions
Model MC (18 HP)
(Covers Serial Numb er s 03 -6 1 06 1 and on )
™
Please Read and Save These Instructions Effective Date: 04-15-03
For Safety, Read All Safety and Operation P/N 6000-8
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. . .rea d this manual thoroughl y! This manual is to be used in conjuncti on 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 MC with the Kohler Command CH18 (18.0 HP) gasoline engine.
All shields and guards must be in place for the proper and safe operation 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 in format ion available at the time this manual was produced.
Walker Mfg. Co. is continually s tr iv ing to improve the desi gn and per for ma nc e of its prod uc ts. We
reserve the righ t to m ake c hanges i n sp ecifi catio ns and de sign wi thout th ereby incu rring 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
IDENTIFYING NUMBER LOCATIONS________ 1
ENGINE SERIAL NUMBER LOCATION ______ 2
SERVICING OF ENGINE AND DRIVETRAIN
COMPONENTS__________________________ 2
Specifications________________________ 3
ENGINE________________________________ 3
ELECTRICAL SYSTEM ___________________ 3
TRANSMISSION_________________________ 3
BLADE DRIVE __________________________ 4
TIRE SIZE______________________________ 4
TIRE PRESSURE ________________________ 4
DIMENSIONS (Tractor and Mower) _________ 4
MOWER DECK__________________________ 5
CURB WEIGHT__________________________ 5
DRIVE BELTS___________________________ 5
GHS SYSTEM (Optional)__________________ 6
SEAT__________________________________ 6
FRAME/BODY CONSTRUCTION ___________ 6
Component Identification___________ 7
Safety Instructions _________________ 10
BEFORE OPERATING___________________ 10
OPERATING___________________________ 11
MAINTENANCE ________________________ 12
SAFETY, CONTROL,
AND INSTRUCTION DECALS _____________ 14
Assembly Instructions _____________ 16
SETUP INSTRUCTIONS _________________ 16
Tire Installation (Tractor)_______________ 16
Battery Service_______________________ 16
Wet Battery Service __________________ 16
Dry Battery Service __________________ 16
Battery Charging ____________________ 17
Battery Installation ___________________ 17
Mower Deck Assembly ________________ 17
Deck Caster Wheels Installation ________ 17
Deck Discharge Chute Installation ______ 18
Deck Discharge Shield Installation ______ 18
PTO Shaft Guard Installation __________ 18
Tilt-Up Roller Wheel Installation ________ 18
Mower Deck lnstallation on Tractor ______ 19
Deck Installation ____________________ 19
Deck Leveling ______________________ 21
PREOPERATING CHECKLIST ____________ 22
Operating Instructions_____________ 24
CONTROL IDENTIFICATION,
LOCATION, AND FUNCTION _____________ 24
Ignition Switch_______________________ 24
Engine Choke________________________ 25
Engine Throttle ______________________ 25
Forward Speed Control (FSC) __________ 25
Steering Levers ______________________ 25
Blade Clutch (PTO) ___________________ 25
Parking Brake _______________________ 26
Transmission Lockout Levers __________ 26
Hourmeter __________________________ 26
Oil Pressure Warning Light ____________ 26
Circuit Breaker (5 Amp) _______________ 26
Light Switch (For Optional Lights)_______ 26
STARTING THE ENGINE_________________ 28
ADJUSTING GROUND
SPEED AND STEERING _________________ 28
ENGAGING THE MOWER________________ 30
STOPPING THE MACHINE _______________ 31
ADJUSTING CUTTING HEIGHT ___________ 31
TRANSMISSION LOCKOUT ______________ 32
RECOMMENDATIONS FOR MOWING ______ 33
RECOMMENDATIONS FOR TILT-UP DECK
OPERATION/TRANSPORT_______________ 34
GRASS HANDLING SYSTEM (GHS) _______ 35
General Information __________________ 36
Clogging Checklist ___________________ 37
Using the Tilt-Up Deck ________________ 38
Using the GHS Catcher________________ 38
Powerfil ® _________________________ 38
“Full” Signal Horn ___________________ 38
Cleaning the GHS Exhaust Screen ______ 38
Dumping the Catcher _________________ 39
Tailgate Dumping ___________________ 39
Using the Dump Bag _________________ 39
Table of Contents
Maintenance Instructions__________ 41
MAINTENACE SCHEDULE CHART ________ 41
IMPORTANT TIPS FOR CARE
OF THE KOHLER ENGINE _______________ 42
Fuel System _________________________ 42
Starting/Stopping_____________________ 42
Cooling System ______________________ 42
Air Cleaner System ___________________ 42
Oil _________________________________ 42
LUBRICATION _________________________ 43
Engine Oil ___________________________ 43
Engine Break-In Oil __________________ 43
Checking Engine Crankcase Oil Level ___ 43
Changing Engine Crankcase Oil/Oil Filter _43
Grease Fitting and Oil Point Lubrication__ 44
Mower Deck Gearbox Lubrication _______ 44
DSD52 Mower Deck Lubrication_________ 45
Tractor PTO Gearbox Lubrication _______ 46
Checking Gearbox Oil Level ___________ 46
Changing Gearbox Oil ________________ 46
Gear Axle Lubrication _________________ 46
Hydrostatic Transmission Fluid_________ 46
Checking Hydrostatic
Transmission Fluid Level ______________ 46
Changing Hydrostatic Transmission Fluid _47
CLEANING ____________________________ 50
Engine Air Cleaner System_____________ 50
Turbine Precleaner __________________ 50
Donaldson Radialseal™ Air Cleaner _____ 51
Engine Cooling System________________ 52
Air Intake System ___________________ 52
Cylinder Head Cooling Fins ____________ 53
Grass Buildup in Mower Housing________ 53
GHS Blower _________________________ 54
GHS Exhaust Screen__________________ 55
Hydrostatic Transmission Cooling Fins __ 55
CHECKING/SERVICING _________________ 55
Security of Air Filtration Components____ 55
Battery______________________________ 55
Electrolyte Level ____________________ 55
Cleaning the Terminals _______________ 56
Chargin g the Battery _________________ 56
Tire Pressure ________________________ 56
Sharpen Mower Blades ________________ 56
Drive Belts __________________________ 57
Mower Deck Gearbox Oil Seals _________ 58
Spark Plugs _________________________ 58
Fuel Lines and Clamps ________________ 58
Engine Starter________________________ 58
Engine Valve Clearance________________ 58
Blade Brake Action ___________________ 58
REPLACING/REPAIRING ________________ 59
Drive Belts __________________________ 59
Engine PTO Drive Belt _______________ 61
Jackshaft Drive Belt _________________ 62
GHS Blower Drive Belt _______________ 63
Hydrostatic Ground Drive Belt _________ 64
Fuel Filter ___________________________ 65
Blade Overload Shear Bolts ____________ 65
PTO Shear Pin _______________________ 66
Mower Blades _______________________ 66
Mower Deck Gearbox Replacement______ 67
GHS Blower Assembly ________________ 68
GHS Blower Assembly Removal _______ 68
Blower Wheel Removal ______________ 68
Blower Wheel Installation _____________ 69
GHS Blower Assembly Installation ______ 69
ADJUSTMENTS________________________ 70
Safety Switches ______________________ 70
Steering Levers ______________________ 70
Blade Clutch (PTO) ___________________ 71
Clutch Engagement/B elt Tens io n _______ 71
Clutch Disengagement/B ra ke Action ____ 72
Stop Block Eccentric Adjustment _______ 73
Clutch Idler Pulley Travel Adjustment ___ 73
Blade Brake Band Adjustment _________ 73
Transmission Control _________________ 74
Set Forward Travel Limit (Stop) ________ 74
Steering Lever End Play Adjustment ____ 75
Neutral Function Adjustment __________ 75
Straight Ground Travel Adjustment _____ 76
Forward Speed Control Friction Lock ____ 76
Tilt-Up Deck Adjustable Stop ___________ 77
Carburetor __________________________ 77
Engine Idle Adjustment _______________ 77
GHS “Full” Signal Horn
with Grass-Pak® Switch _______________ 78
Troubleshooting
(When Horn Fails to Operate) __________ 78
ELECTRICAL SYSTEM__________________ 79
Circuit Breakers______________________ 79
Wiring Diagram - Model MC ____________ 80
Operator’s Notes___________________ 81
Warranty___________________________ 83
General Information
HIGHLIGHTED INFORMATION
Walker Manufacturing recommends that any service
requiring special tr aining or tools be performed by
an authorized Walker Mower Dealer. There are several general pract ices to be aware of in the area o f
safety. Most accidents associated with the operation or maintenance o f a Walker Mower ar e cau se d
by disregarding ba si c safety precautions or s peci fic
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 man ual. Refer to Safety
Instructions for the mean ing s of DANGE R, WARNING, CAUTION, IMPORTANT, and NOTE.
GLOSSARY
There are many ter ms th at are either unique to th is
equipment or that ar e used 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.
• FORW ARD SPEED CONTROL (FSC) cont r ol s
the maximum forward speed of the tractor;
functioning as a cruise control.
• GRASS HANDLING SYSTEM (GHS
mowed material 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 gr ass catcher by
an oscillating delivery spo ut.
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 mo ver, including t he en-
gine, drive train, operator seat, and contr ols 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 the tractor body just below the left rear corner of the seat.
The mower deck serial number plate is affixed
alongside the angle i ron framing on the RH side of
the RH mower blade drive. Model and ser ial numbers are helpful when obtaining repl acement parts
and maintenance assistance. For ready refer ence,
please record these numbers in the space provided.
• GRASS-PAK
grass delivery s pout (in the catcher) and act ivates the “full” signal horn when the grass
catcher is full.
SWITCH is mounted on the
• GROUND DRIVE refers to the dual h yd rostatic
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 opera tor 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
1
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. F or the
service of these components during the limited warranty period, it is important to find a local, authorized
servicing agent of the component manufacturer. Any
unauthorized work don e on these components during the warranty period may void the warranty. If
you have any difficulty 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 manu al that accompanies this
manual for the location of the engine serial number.
For the mower model covered by this manual,
an e ngine manual is availa ble coveri ng the Kohl er
Command CH18 gasoline engine.
Serial Number
Kohler Engines Kohler Company
Kohler, WI 53044
Hydrostatic Eaton Corporation
Transmissions 15151 Highway 5
Eden Prairie, MN 55344
Gearboxes (Deck) Tecumseh Products Co.
900 North Street
Grafton, Wl 53024
Engine Serial Number Location
2
Specifications
MODEL MC
ENGINE
Manufacturer/Model Kohler Command CH18, 2 Cyl., Gasoline (Air-Cooled)
Displacement 38.0 cu. in. (624 cc)
HP (@ 3600 RPM) 18.0
Max. RPM (No Load) 3750
Governed RPM 3600
Max. To rq ue [ft-lb (N
Idle RPM 1200 ± 75
Spark Plug Type Champion
Spark Plug Gap .030 in. (.76 mm)
Crankcase Capacity 2 qts (1.9 liters)
Crankcase Lubricant API SG or SH Grade Oil Only with 10W-30 Viscosity above 0° F
Fuel Tank Capacity 3 Gallons (11.4 liters)
Fuel Regular Grade Unleaded Gasoline (87 Octane)
Cooling System Capacity Air Cooled
ELECTRICAL SYSTEM
Battery 12 Volt, 35 AH, 295 CCA
Charging System Flywheel Alternator
Charging Output 15 Amp DC (Regulated)
System Polarity Negative Ground
Ignition Electronic Capacitive Discharge
⋅m) @ RPM] 30 (41) @ 2500
®
RC12YC
(-18° C), or 5W-20 or 5W-30 Viscosity below 32° F (0° C)
Starter 12 Volt Electric Ring-Gear Type, Solenoid Shift
Interlock Switch Ignition Lockout by Seat Switch, Transmission Neutral and Blade Clutch
Circuit Breaker Auto Reset (30A)
TRANSMISSION
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
Service Brake Dynamic Braking through Hydrostatic Transmission
Parking Brake Mechanical Pin Lock in Transmission Gear
Neutral Transmission Release by Manual Dump Valve
Final Drive Gear Drive Axle
3
Specifications
MODEL MC
TRANSMISSION (continued)
Transmission Fluid
Factory Service Mobil 1 Synthetic Motor Oil (15W-50)
Alternate Transmission Fluid SAE 30W Straight Viscosity Motor Oil
Transmission Fluid Capacity 1 qt (1 liter)
Transmission Cooling Cooling Fan Mounted on Drive Pulley
Ground Travel Speed
Forward m.p.h. (km/h)
Reverse m.p.h. (km/h)
BLADE DRIVE
PTO Shaft Quick Disconnect Spline Shaft with Two High-Speed U-Joints
Blade Spindle Each Blade (2) Mounts Direct on Peerless Right Angle
Blade Drive Clutch and Brake Manual Belt Tightener Clutch and Band Brake
0-5 (0-8) Infinitely Variable
0-5 (0-8) Infinitely Variable
Gearbox with Tee Gearbox in Center Connected to PTO Shaft
(Complete Geared Drive, Peerless Model 1000 Gearboxes)
(Stops Blades within Five (5) Seconds of Disengagement)
Max. Blade Speed
[22 in. (56 cm) Blade] @ 3600
RPM Engine
TIRE SIZE
Deck Caster Wheel 2.80/2.50-4 Pneumatic (4-Ply)
Deck Caster Wheel (Optional) 8.25 x 2.75 Semi-Pneumatic
Drive 18 x 8.50-8 (4-Ply)
Drive (Optional Narrow Tire) 18 x 6.50-8 (4-Ply)
Rear 13 x 6.50-6 (4-Ply)
TIRE PRESSURE
Deck Caster Wheel 20 PSI (137 kPa)
Drive 15 PSI (103 kPa)
Rear
DIMENSIONS (Tractor and Mower)
Length
36 in. (91 cm) GHS Model 87 in. (221 cm)
42 in. (107 cm) GHS Model 89 in. (226 cm)
Width
36 in. (91 cm) SD Model
(with Deflector)
42 in. (107 cm) SD Model
(with Deflector)
36 in. (91 cm) GHS Model 37 in. (94 cm)
42 in. (107 cm) GHS Model 43 in. (109 cm)
2900 RPM
[16700 FPM (5090 m/min)]
20 PSI (137 kPa)
41-3/4 in. (106 cm)
47-3/4 in. (121 cm)
4
Specifications
MODEL MC
DIMENSIONS (continued)
Height
SD Model 37-1/2 in. (95 cm)
GHS Model 44-1/2 in. (112 cm)
Wheel Base (Tractor) 42-1/4 in. (107 cm)
Tread Width (Tractor)
Standard Ti res 28-1/4 in. (72 cm)
Optional Tires 29-3/4 in. (76 cm)
MOWER DECK
Width of Cut SD/GHS 36 or 42 in. (91 or 107 cm)
Cutting Height 1 to 4 in. (3 to 10 cm)
Height Adjustment 7 Positions - 1/2 in. (1 cm) Increment Hitch Pins Installed in
Blade Size
Multi-Position Deck Support
36 in. (91 cm) SD Model 20 in. (51 cm) Two (2) Clockwise-Rotating Blades with a 4 in.
(10 cm) Center Overlap
36 in. (91 cm) GHS Model 20 in. (51 cm) Two (2) Counter-Rotating Blades with a 4 in.
(10 cm) Center Overlap
42 in. (107 cm) SD Model 22 in. (56 cm) Two (2) Clockwise-Rotating Blades with a 2 in.
(5 cm) Center Overlap
42 in. (107 cm) GHS Model 22 in. (56 cm) Two (2) Counter-Rotating Blades with a 2 in.
(5 cm) Center Overlap
Deck Suspension Torsion-Flex Frame with Caster Wheels and
Counterweight Springs
CURB WEIGHT (Approximate)
SD Tractor Only 645 lb (293 kg)
GHS Tractor Only 735 lb (334 kg)
SD Tractor and 36 in. SD Deck 775 lb (352 kg)
SD Tractor and 42 in. SD Deck 810 lb (368 kg)
GHS Tractor and 36 in. GHS Deck 860 lb (390 kg)
GHS Tractor and 42 in. GHS Deck 895 lb (406 kg)
DRIVE BELTS
Engine PTO Walker P/N 8230
Jackshaft Drive Gates 3VX395 (or Walker P/N 6251)
Ground Drive, Micro-V Walker P/N 7248
Blower (GHS Model) Walker P/N 7234-1
5
Specifications
MODEL MC
GHS SYSTEM (Optional)
Blower 4 x 10 x 1/4 in. (10 x 25 x 1 cm) Three-Blade Paddle Wheel
Blower Brake Band Brake (Works in Combination with PTO Clutch, Stops
Max. Blower Speed 3600 RPM
Grass Catcher Capacity 63 Gallons (238 liters)/6.7 Bushels
Optional Grass Catcher Capacity* 89 Gallons (335 liters)/9.5 Bushels
Full Signal Oscillating Vane Switch Mounted on Grass Delivery Spout Triggers
Powerfil
®
(Driven by Mower Engine)
Blower within Five (5) Seconds of PTO Disengagement)
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 Chassis
Body 14 Gauge Steel
Deck 11 Gauge Steel
GHS Catcher and Chutes Molded Cross-Linked Polyethylene (UV Stabilized)
Contour-Molded, with Nylon Backed Vinyl Cover and Integral
Foam Cushion
*Optional (9.5 Bushel) Grass Catcher adds approx. 5 lb (2 kg) and 5 in. (13 cm) in Height
NOTE: The manufacturer reserves the right to make changes in specifications shown herein at any time
without notice or obligation.
6
Component Identification
NOTE: Control Identification
shown in Operating
Instructions section.
Catcher Door
Safety Latch
Anti-Scuff
Roller
Catcher Lift /
Dump Handle
Turbine
Precleaner
Grass Handling System
9.5 Bushel Catcher
Tilt-Up
Latch
Spring Clip
Counterweight Spring
and Protective Cover
Transmission Control Rod
Adjustment Nut (LH)
Deck Support Pins
and Height Adjustment
Hitch Pins
Fuel Tank and Cap
Transmission Control
Rod Adjustment Nut
(RH)
Deck Support Arms
(Cutting Height Adjustment)
Deck Lift Handle
Tilt-Up Hook
(Not Visible)
Front View and Right Side View
Tilt-Up
Deck Handle
Footrests
Deck
Caster Wheels
7
Component Identification
Catcher Door
Catcher Door
Gas Spring
Protective Cover
Catcher Lift /
Dump Handle
Gas Spring
Removable Grass
Catcher Screen
(Not Visible)
Catcher Exhaust
Deflector
Left Hand
Drive Wheel
Muffler
Tailpipe
Oil
Filter
Catcher
Door
Catcher
Door Handle
Anti-Scuff
Roller
Oil Drain
Plug
Tailwheel Fork
and Wheel
Rear View and Left Side View
8
Component Identification
Air Restriction
Indicator
Rubber Bumper
(Body Support)
(Not Visible)
Donaldson
Air Cleaner
Air Cleaner
Cover
Rubber Bumper
(Body Support)
Fuel Pump
Air Intake
Hose
Precleaner
Tube
Fuel Tank Cap
Jackshaft
PTO Gearbox
Dipstick
Turbine
Precleaner
RH Transmission
Lockout Lever
PTO
Clutch Lever
30 Amp
Circuit Breaker
Muffler
Throttle and
Choke Linkage
Muffler Heat Shield
Oil Fill/
Dipstick
GHS Blower
RH Hydrostatic
Transmission
Neutral Safety
Switch
LH Hydrostatic
Transmission
Positive (+)
Battery Cable
Negative (-)
Battery Cable
Battery
Top View (Engine Compartment)
LH Transmission
Lockout Lever
9
Safety Instructions
Pay particular attentio n 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 instr uctions. Failure to comply with safety instructions may result in
personal injury.
The seriousness or degree of imp ortance of each
type of information is defined as follows:
DANGER
An IMMEDIATE hazard that WILL result in
severe personal injury or DEATH, if warning is ignored and proper safety precautions are not taken.
WARNING
A POTENTIAL hazard that COULD result in
severe personal injury or DEATH, if warning 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 procedur es, 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 persona l injury or damage to 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 familiar
with all machine 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:
Possible hazards or unsafe practices that
MAY result in MODERATE personal injury
or property damage, or machine damage, if
warning is ignored and proper sa fety precautions are not taken.
IMPORTANT: Identifies mechanical information de-
manding special attention, sinc e it deals wit h the possibility of damaging a part or parts of the machine.
NOTE: Identifies information worthy of special
attention.
CAUTION
Walker Manufacturing Company
5925 East Harmony Road
Fort Collins, CO 80528
2. Never al low chi ldre n to op erate rider mower.
Do not allow adults to operate without proper
instruction.
3. Clear the area to be mowed of any fo reign
objects which may be picked up and thrown by
cutter blades. Pick up all sticks, stones, wire,
and any other debris.
4. Keep everyone, es peci all y child re n an d 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.
10
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 clothing, 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 he ar ing . Operator hear-
ing protection is recommended; particularly
for continuous operation of the GHS Model due
to blower noise level. Wear a suitabl e 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 th e engine cannot be starte d unless the Forward Speed Control lever is in the
NEUTRAL-PARK position, and the PTO clutch
is in the DISENGAGED position. Also, the engine should stop if the operator li fts 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.
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.
12. The elec trical system battery contains sulfuric
acid. Avoid any contact 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 beginn ing operator, learn to steer (ma-
neuver) the tractor with a slow engine speed
before attempting any mowing operation.
Be aware that, with the front mou nted mower
configuration, the bac k of the tractor swings to
the outside during turns.
4. Remember, for an emergency stop, the forward
motion of th e tractor can always be stopped by
pulling the Forwar d Speed Control (F SC) into
the NEUTRAL-PARK position.
5. In case either of the transmission drive belts
break during operation, and if the machine is on
a slope, the machine will f reewheel down the
slope. To maintain control, immediately (1)
Release the steering levers and simultaneously
(2) Move the FSC to the NEUTRAL-PARK position. When the machine is sto pped or moving
slowly, engage the parking brake.
NOTE: This is exactl y the s ame pr ocedu re us ed to
normally stop and park the machine.
6. Disengage the blade clutch and put the FSC in
the NEUTRAL-PARK position before starting
the engine (an ignition interlock switch normally
prevents starting of th e machine if these controls ar e in the OPERATING position).
e. Replace the machine fuel cap and container
cap securely a nd clean up any s pilled fuel
before starting the engine.
11. Never attempt to make any adjustments
while the engine is running, except where
specifically instructed to do so.
7. Do not run the engine in a confined area
without adequate ventilation. Exhaust fumes
are hazardous and can be deadly.
8. Do not carry passengers - maximum seating
capacity is one (1) person.
11
Safety Instructions
9. Watch for holes, rocks, and roots in the terrain
and for other hidde n hazards. When mowing
tall grass, mow hig her than desired to e xpose
any hidden obstacles. Then, clean the area and
mow to the desired height.
10. Avoid sudden start s or stops. Bef ore backing
the machine up, look to th e rear to b e sure n o
one is behind the machine. Watch carefully for
traffic when crossing or working near roadways.
11. Disengage the blade drive when transporting
the machine across drives, si de wa lks , e tc. Ne-
ver raise the mower deck while blades are
rotating.
12. The maximum recommended side slope operating angle is 20 degrees or 33% grade.
When operating the machine on a slope, reduce
speed and use ca ution to start, stop, and m aneuver. To prevent tippin g or loss of control of
the machine, avoid sharp turns or sudden
changes in direction.
13. Never adjust cutti ng height with the engine
running. Before adjusting cutting height or
servicing, disengage the blade clutch (PTO),
stop the engine, and remov e the ignition key.
Wait for all movement to stop before getting off
the seat.
NOTE: A blade/blower br ake should nor mally
stop drive line rotation within five (5) seconds of
disengaging the PTO clutch.
17. 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.
18. 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 sure blade drive sh aft 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 - us e a stick or similar tool to
remove clogged material.
19. If the cutting bl ades strike a solid object o r the
machine begins to vibrate abnormally, immedi-
ately disengage the blade clutch (PTO), stop
the engine, and wait for all moving parts to
stop. T o prevent accidental starting, disconnect
the spark plug wires. Thoroughl y inspect the
mower and repair any damage before restarting
the engine and operating the mower. Make sure
cutter blades are in good condition and blade
nuts are torqued to 60 ft-lb (81.3 N
⋅m).
12
14. For side discharge mower decks, do not oper-
ate with the grass deflector chut e removed .
Keep the deflec tor in th e lowest possible position.
15. For tractors equipped with tilt-up deck, observe
the following recommendations:
a. Do not move tractor with dec k in tilt-up po-
sition.
b. Never tilt body f orward with deck in tilt-up
position.
16. For GHS equipped models, do not operate the
machine with the grass catcher in the DUMP
position or with the back door OPEN. Dan-
gerous projectiles may be thrown out of the discharge chute or the back of the grass catcher.
20. Do not touch the engine or muffler while the
engine is running or immediately after stopping
the engine. These areas may be hot enough to
cause serious burns.
21. When leaving the machine unattended, dis-
enga ge t he b lade clu tch (PTO), stop t he e n gine, and remove the key.
MAINTENANCE
1. To prevent accidental starting of the engine
when servicing or adjusting the machine, remove the key fro m the ignition sw itch and disconnect the spark plug wires.
Safety Instructions
2. T o reduce fire haz ards, keep the engine free of
grass, leaves, excessive grease, and dirt.
3. Keep all nuts, bolts, and sc rews tig ht to e n su re
the machine is in a safe, working condition.
Check the blade mounting nuts frequently , making sure they are tight.
4. Perform only maintenance instructions de-
scribed in this manual. 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. Always use the proper engine service manual when working on the engine. Unautho-
rized maintenance o perations or modifications
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.
c. Ke ep sparks, fla mes, a nd smo king mater i-
als away from the ba ttery at all times. To
avoid sparks, use care when removing battery cables from posts.
d. Disconnect both battery cables before
unplugging any wiri ng connectors or mak ing repairs on the electrical system.
IMPORTANT: Keep all applicable manuals
immediately accessible to anyone who may
operate or service this machine.
8. Never attempt to discon nect an y safe ty de vices
or defeat the purpose of these safety devices.
9. Do not change the engine g ove rnor se ttings or
overspeed the engine. The governor has been
factory-set for m axim um- s afe engi ne ope rating
speed.
10. Use genuine factory replacement parts.
Substitute parts may resu lt in produ ct malfunc tion and possible inj ury to the operator and/or
others.
11. Use care when charging the batter y or per-
forming maintenance on the battery and electrical system:
a. Make sure the battery charger is unplugged
before connecting or disconn ecting cables
to the battery.
b. Charge the battery in a well-ventilated
space, so gases pro duced while charging
can dissipate. Make sure the battery vents
in the caps are open.
13
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 Part Number is listed below and in the Parts Manual.
Each End of Mower Deck (5808)
SD Deck Discharge Shield (5848)
Adjacent to Blower Discharge Chute
Front Body Adjacent to
RH Steering Lever (6807)
Engine Shroud (5855)
through Body (5804)
Hydrostat Oil
Reservoir (5810-2)
14
Underside of Body (5861)
Gear Axle (5810-1)
Rear of Grass Catcher Exhaust Screen (5869)
Catcher Safety Latch,
RH Side (5874)
LH Side of Body,
Above Muffler (5805)
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 Part Number is list ed below and in the Parts Manual.
Top of Blower Housing (5819)
Jackshaft Support Adjacent
to Dipstick (7827)
Deck Gearbox Cover (5807-3)
Deck Carrier Frame (5865)
Deck Carrier Frame (8653)
Fender, LH Side (5802-2)
On Engine (6810)
Right Side, Below Operator Seat (7809)
Catcher Door Hinge Bar, LH and RH Sides (5868)
Rear Bumper (5815)
Deck Carrier Frame (8647)
Fender, RH Side (7802)
15
Assembly Instructions
SETUP INSTRUCTIONS
Walker Mowers are shipped partially assembled.
After uncrating the tractor and mower deck, initial
setup is required.
NOTE: During the process of unpacking, any damaged or missing parts should be noted and reported
to the delivering ca rrier immediately (put in wri ting
within 15 days). The carr ier will provide directions
for proceeding with a claim to receive compensation
for damage.
Tire Installation (Tractor)
• Install the drive ti res usin g the eig ht (8) lug bo lts
that are supplied with the o wner’s packet of materials. Drive tires are 18 x 8.50-8, 4-pl y; rear tire is
13 x 6.50-6, 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
Tilt mower body up (lift on rear of body ) for battery
access. Check the battery for electrolyte level and
charge. The electrolyte lev el 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.
IMPORTANT: Make sure battery is securely
mounted in the frame. A loose battery may cause
damage to the case resulting in acid leakage and severe damage to the machine. A hazard may be created by damage to cr itical work ing parts and sa fety
systems.
Wet Battery Service
Dry Battery Servic e
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 trained technician can activate the b attery 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 rubber 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 battery ho ld dow n bar, disconnect
the battery cables and li ft the battery ou t of the
tray.
IMPORTANT: Battery must be removed from
the mower before filling with electrolyte.
16
If the battery has been shipped wet, but the electrolyte level is low or the batte ry needs to be charge d
then:
1. Fill each battery cell with drin king water to the
bottom of the vent wells.
2. Charge battery. Refer to Battery Charging in
this section.
IMPORTANT: Obtain and use only battery
grade sulfuric acid electrolyte with a 1.265 specific gravity to activate the battery. DO NOT use
water or any other liquid during initial activation.
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 c harge the ba ttery. Refer to
Battery Charging.
Battery Charging
DANGER
BATTERIES PRODUCE EXPLOSIVE GASES
• Charge the battery in a well-ventilated
area, so that gases produced while charging can dissipate.
• 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 amps for 10 minutes .
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.
Install the battery in the mower as shown in Battery
Installation photo. Connect the pos itive and n egative cables to the proper battery terminal (red cable
and boot connects to the Positive (+) te rminal).
Slide the rubber boot up and over the battery post,
making sure it co vers the post completely to pre-
vent an electrical short.
WARNING
Make sure the battery cap vents are open.
Improper venting of the battery COULD
cause a battery explosion.
Battery Clamp
Secured by
Wing Nut(s)
(+) Battery Cable
Connection
Battery Installation
Mower Deck Assembly
2. After charging the battery , adjust the electrolyte
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.
3. Install battery.
Battery Installation
IMPORTANT: Make sure battery is securely
mounted in the frame. A loose battery may cause
damage to the case resulting in acid leakage and severe damage to the machine. A hazard may be created by damage to cr itical work ing parts and sa fety
systems.
Deck Caster Wheels Installation
1. Remove the bolt, nut, axle spacer tube, and
spacer washers from each 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 wa sh er on ea ch si de of the
hub (if used), and fit the assembly into the wheel
fork.
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 turn) while the wheel and spacer
washers (if used) spin freely without binding.
17
Assembly Instructions
Grease Fitting
Locations
Spacer Washer
Axle Spacer Tube
Deck Caster Wheel Installation
NOTE: If semi-pneumatic wheels are installed,
make sure the spacer washers fit over the spacer
tube and are not caught between the fork and the
end of the tube. The washers should 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 positioning
the shield hinge lug i n fr ont of the deck mou nt and
fastening with two 3/8-16 x 1-1/4 in. bolts, 3/8-16
ESNA nuts, and 3/8 in. wave sp ring washers. Th e
wave washers fit between the two hinging surfaces.
Tighten the nuts until the shield moves freel y but is
not loose.
WARNING
DO NOT operate the machine without the
grass deflector chute a ttached and in the
lowest possible position.
Attach Shield
Deck Discharge Chute Installation (GHS Rear Discharge Models Only)
Mount the discharge chute hinge on top of the deck
discharge openin g using the 1/4-20 x 1/2 i n. s oc ket
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 Guard
Nut on Top
Discharge Chute and PTO Shaft Guard
Installation on Rear Discharge Deck
Attach
Chute
Discharge Shield Installation
on Side Discharge Deck
PTO Shaft Guard Installation
Position the shaft guard as shown and moun t with
two 1/4-20 x 1/2 in. bolts.
Tilt-Up Roller Wheel Installation
Mount the two (2) tilt-up roller whee ls on the brac kets on the rear skirt of the deck housing using the
P/N 8490 axle b olt , 3 /8 in. wa ve s pr in g washer and
3/8-16 in. Whiz loc knut. Tighten the axle bolt until
the wheel rolls freely, but is not loose.
18
Assembly Instructions
Attach Spring
Tilt-Up Spring and Roller Wheel
Installation on Rear Discharge Deck
Roller Wheels
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 splined 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.
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 .
Mower Deck lnstallation on Tractor
Deck Installation
1. Lightly grease each deck support arm (2) on the
tractor. Refer to Mower Deck In stallat ion photo 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 Shaf t Guard Installation photo
for socket location). Slide the deck onto the support arms: all the way if SD equipped model,
approximately 3 in. (76 mm) if G HS equipped
model.
NOTE: When installing the DSD52 Mower
deck, make sure to retract the dolly wheel after
mounting the deck on the tractor .
3. If the deck is rear discharge (GHS equipped
model), the rear discharge chute will need to be
aligned and connected to th e blower inlet during the last 2 in. ( 51 mm) of sl ide acti on on th e
support arms.
Pull Back Spring-Loaded
Coupler Ring
Installing PTO Quick Coupler
Spring-Loaded Coupler Ring
In Fully Forward Position
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 suppo rt arm to lock the deck in place
(refer to Deck Counterweight Spring Installa-
tion p hoto). Two (2) hitch pins are inc luded in
the owner’s packet of materials.
Coupler Ring “Locked” Position
19
Assembly Instructions
6. Raise the mower body (instead of lifting the
front of deck) and clip the counterweight springs
to the receptacle on fro nt of body. Lower the
body to tension the springs. (Refer to Deck
Counterweight Spring Installation Photo.)
Arrows on Shaft and Tube
(used to align when sliding together)
PTO
Connection
Spring Tension Adjustment
Nut Located Under Lower
Spring Hook (Not Visible)
Grease Deck
Support Arms
Mower Deck Installation (PTO Shaft Connection)
7. With the counterweight springs c onnected, 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 Counterweight Spring Installa-
tion photo.
Counterweight S prings
Clip Onto Body
With Body Tilted Up
Deck Counterweight Spring Installation
Hitch Pins
Lock Deck On
Support Arms
20
Assembly Instructions
Deck Leveling
1. Position mower on a smoo th, leve l surfac e. Set
the cutting height to th e highest position - 4 in.
(102 mm) - for easy acce ss under the deck to
measure blade hei ght. Refer to ADJUSTING
CUTTING HEIGHT in Operating 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.
WARNING
The machine must be shut off during this
procedure.
2. Check the side-to-side 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), ad d a washer
shim under the deck support pins on the low side
to level the deck.
3. Check the front-to-rear level. Rot ate the blades
to point forward. Me asure the distance from
blade tip to ground on t he front and rear. 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 welded; within normal tolerances, very little, 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
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
Deck Leveling
21
Assembly Instructions
PREOPERATING CHECKLIST
Before operating the mower for the first time, and as
a routine before da ily 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.
FILL FUEL TANK
Fill the fuel tank using clean, fresh automotive grade
unleaded gasoline (87 octane rating minimum).
DANGER
Handle gasoline with care. Gasoline is
highly flammable and its vapors are explosive. Use safe refueling procedures:
IMPORTANT: 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 LEVEL
Check the en gine cran kcase oi l level bef ore use an d
after each 5 hours of continuous operation. Refe r
to LUBRICATION for Checki ng Engine Cra nkcase
Oil Level in Maintenance Instructions.
CHECK AND SERVICE ENGINE AIR CLEAN-
ER SYSTEM
• Check air restriction gauge to make sure there is
no red indication showing.
• Check condition, cleanliness, and security of the
complete air cleaner system (clean air filter
every 100 hours). For detailed procedures,
refer to CLEANING the Engine Air Cleaner
System in Maintenance Instructions.
• DO NOT fill fuel tank with the engine run-
ning.
• If the engine is hot, allow to cool before
refueling.
• Use an approved fuel container.
• Fuel the mower outdoors.
• 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 permit 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.
ADJUST CARBURETOR (Initial Start-up Only)
Refer to ADJUSTMENTS of Carburetor in Mainte-
nance Instructions.
CHECK ENGINE COOLING SYSTEM
Check that the engin e cooling air intake screen is
free of obstruction by grass clipping s or debris and
clean if required. Also, cylinder head cooling fins
should be inspected and cl eaned if any build-up of
debris is noted [remov e two (2) cylinder head access panels to inspect and clean].
Check performance of the c ooling system by s tarting 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.
22
Assembly Instructions
CHECK GEAR AXLE OIL LEVEL
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).
Tilt-Up Lift Handle
Tilt-Up Latch
Tilt-Up Latch
CHECK HYDROSTATIC TRANSMISSION OIL
LEVEL
Refer to LUBRICATION for Checking Hydrostatic
Transmission Fluid Level in Maintenance Instructions.
CHECK BATTERY ELECTROLYTE LEVEL
Refer to CHECKING/SERVICING the Battery in
Maintenance Instructions.
CHECK FUNCTION OF OIL PRESSURE
WARNING LIGHT
Turn ignition key to the RUN position. The oil pressure light should operate, indicating normal function.
CHECK TIRE PRESSURE
Deck Caster Wheel = 20 PSI (137 kPa)
Drive = 15 PSI (103 kPa)
Rear = 20 PSI (137 kPa)
CHECK AND CLEAN GRASS BUILDUP UN-
DERNEATH MOWER DECK (and insid e GHS
blower, if equipped)
Refer to CLEANING the GHS Blower in Mainte-
nance Instructions for blower cleaning information.
DANGER
Tilt-Up Hook
on Deck
Deck Lock Lever
Deck Secured in TILT-UP Position
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 t he tra ctor 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
refer to CHECKING/SERVICING for Sharpen
Mower Blades in Maintenance Instructions.
⋅m). If blade sharpening is required,
Never operate cutter b lades with deck in
raised position because it is hazardous.
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 tiltup latch on the tractor body. Before operating th e
tractor, make sure to re-engage the deck lock levers
after lowering the deck to the normal operating position.
ADJUST MOWER CUTTING HEIGHT, IF RE-
QUIRED
Position the hitch pins in the four deck support pins.
Refer to the “Cutting Heigh t Adjustment” decal on
the deck gearbox cover.
PERFORM ANY ADDITIONAL PROCEDURES
called for on the MAINTENANCE SCHEDULE
CHART in Maintenance Instructions.
23
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