Walker MBSSD 27 HP User Manual

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OWNER’S MANUAL

Safety, Assembly, Operating, and Maintenance Instructions

and ILLUSTRATED PARTS MANUAL

Model MBSSD (27 HP)

™

Please Read and Save These Instructions Effective Date: 03-31-08

For Safety, Read All Safety and Operation P/N 2000-1 Instructions Prior to Operating Machine

Foreword

Thank you. . .for purchasing a Walker mower. Eve ry ef for t has been made to provid e you with th e 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 cont act your local dealer. Every customer is important to us. Your satisfaction is our goal.

Please. . .read this manual thoroughly! This manual is to be used in conjunction 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 import ant to yo ur safety, and must be read and understood to help prevent possible injury to th e oper ator or ot hers. If anything in this manual is confusing or hard to understand, please call our service departmen t, at (970) 221-5614, for clarification before operating or servicing this mower.

This manual covers Model MBSSD with the Kohler Command CH740 (27 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 information available at the time this manual was produced.

Walker Mfg. Co. is continually striving to improve the design and performance of its products. We reserve the right to make changes in specifications a nd design without thereby incurrin g any obligation relative to previously manufactured products.

Sincerely, WALKER MANUFACTURING COMPANY

Bob Walker, President

Owner’s Manual

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 Component Identification_ 6 Safety Instructions ______________ 9

BEFORE OPERATING____________________ 9 OPERATING___________________________ 10 MAINTENANCE ________________________ 12 SAFETY, CONTROL, AND INSTRUCTION DECALS _________________ 13

Assembly Instructions _____________ 15

SETUP INSTRUCTIONS _________________ 15

Battery Service_______________________ 15

Wet Battery Service __________________ 15 Dry Battery Service __________________ 15 Battery Charging ____________________ 16

Mower Deck Assembly ________________ 16

Deck Caster Wheels Installation ________ 16 Deck Discharge Shield Installation ______ 16 PTO Shaft Guard Installation __________ 17 Tilt-Up Roller Wheel Installation ________ 17

Mower Deck Installation on Tractor ______ 17

Deck Installation ____________________ 17 Deck Leveling ______________________ 19

PREOPERATING CHECKLIST ____________ 20

Operating Instructions_____________ 22

STARTING THE ENGINE_________________ 26 ADJUSTING GROUND SPEED AND STEERING _________________ 26 ENGAGING THE MOWER________________ 28 STOPPING THE MACHINE _______________ 29 FUEL SELECTOR VALVE________________ 29 ADJUSTING CUTTING HEIGHT ___________ 30

Transport Position____________________ 30 TRANSAXLE LOCKOUTS________________ 31 RECOMMENDATIONS FOR MOWING ______ 31 RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT_______________ 32

Maintenance Instructions___________33

MAINTENANCE SCHEDULE CHART_______ 33 IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE ______________________ 34

Fuel System _________________________ 34

Starting/Stopping ____________________ 34

Cooling System ______________________ 34

Air Cleaner System ___________________ 34

Oil _________________________________ 34 LUBRICATION_________________________ 35

Engine Oil___________________________ 35

Engine Break-In Oil ___________________35 Checking Engine Crankcase Oil Level ____35 Changing Engine Crankcase Oil/Oil Filter _35

Mower Deck Spindle Lubrication________ 37

DSD60 Mower Deck Lubrication ________ 37

Transaxle Lubrication_________________ 37

Grease Fitting and Oil Point Lubrication__ 37

Transaxle Oil and Filter Change_________ 40 CLEANING____________________________ 41

Engine Air Cleaner System_____________ 41

Cummins/Fleetguard OptiAir™ Air Cleaner _________________________41

Engine Cooling System _______________ 43

Air Intake System ____________________43 Cylinder Head Cooling Fins ____________43

Grass Buildup in Mower Housing _______ 44

Transaxle Cooling Fins________________ 46

CONTROL IDENTIFICATION, LOCATION, AND FUNCTION _____________ 22

Ignition Switch _______________________ 22 Engine Choke ________________________ 23 Engine Throttle_______________________ 23 Forward Speed Control (FSC)___________ 23 Steering Levers ______________________ 23 Blade Clutch (PTO) ___________________ 23 Parking Brake________________________ 24 Transaxle Lockout Rods _______________ 24 Hourmeter___________________________ 24

Table of Contents

CHECKING/SERVICING _________________ 47

Security of Air Filtration Components ____ 47 Battery______________________________ 47

Cleaning the Terminals _______________ 47 Charging the Battery _________________ 47

Tire Pressure ________________________ 47 Wheel Nuts Torque ___________________ 47 Sharpen Mower Blades ________________ 47 Drive Belts __________________________ 49 Spark Plugs _________________________ 49 Fuel Lines and Clamps ________________ 49 Blade Brake Action ___________________ 49

REPLACING/REPAIRING ________________ 49

Drive Belts __________________________ 49

Engine/PTO Belt ____________________ 50 Ground Drive Belt ___________________ 51

Fuel Filter ___________________________ 52 Mower Blades________________________ 52

ADJUSTMENTS ________________________ 53

Transmission Control _________________ 53

Steering Lever Position Adjustment _____ 53 Steering Handles Adjustment __________ 54 Neutral Position Adjustment ___________ 54 Full Forward Speed Adjustment ________ 55 Straight Tracking Adjustment __________ 55 FSC Switch - Neutral Adjustment _______ 56 Forward Speed Control Friction Adjustment___________________ 56

PTO Belt Tension_____________________ 56 PTO Clutch __________________________ 57 Clutch Rod __________________________ 57

ELECTRICAL SYSTEM __________________ 57

Illustrated Parts Manual

TRACTOR AND DECK DECALS___________ 58 BODY / CHASSIS ASSEMBLY ____________ 60 MAIN COMPONENT POWER TRANSMISSION ________________ 62 ENGINE GROUP _______________________ 64 HYDROSTATIC GROUND DRIVE ASSEMBLIES____________________ 66 STEERING CONTROL ASSEMBLIES_______ 68 ELECTRICAL ASSEMBLY________________ 70 60 INCH COMPLETE CARRIER FRAME ASSEMBLY_____________________ 72 DSD60 DECK ASSEMBLY________________ 74 MULCH KIT____________________________ 76 WIRING SCHEMATIC____________________ 78

Warranty___________________________ 79

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, WARNING, CAUTION, IMPORTANT, and NOTE.

GLOSSARY

There are many terms that are either unique to this equipment or that are used as acronyms. The following terms and their definitions will help while using this manual:

• DECK is the mowing attachment moun ted on

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

• TRACTOR is the prime mover , including the en-

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

• TRANSAXLE transmits and controls power

from the ground drive belt to the main drive wheel.

• TRANSAXLE LOCKOUT RODS release the

transaxles 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 iron framing on the LH side of the LH mower blade drive. Model and serial numbers are helpful when obtaining replacement parts and maintenance assistance. For ready reference, please record these numbers in the space provided.

Tractor Model No. _______________________ Tractor Serial No. _______________________ Deck Serial No. _______________________

• FORW ARD SPEED CONTROL (FSC) controls

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

• GROUND DRIVE refers to the dual transaxles

which drive the main wheels.

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

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

• POWER TAKE-OFF (PTO) transmits engine

power to run the cutter blades.

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

of the tractor when the operator is seated fa cing 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 two transaxles.

Engine Model No. _______________________ Engine Serial No. _______________________ Date of Purchase _______________________

Fill In By Purchaser

General Information

Serial Number

Tractor Serial Number Location

Serial Number

Engine Serial Number Location

Serial Number

Mower Deck Serial Number Location

ENGINE SERIAL NUMBER LOCATION

Refer to the engine manual th at accompanies this manual for the location of the engine serial number. For the mower model covered by this manual, an engine manual is available from Kohler covering the Kohler Command CH740 engine.

SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS

The detailed servicing and repair of the engine and transaxle 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, authorized servicing agent of the component manufacturer. Any unauthorized work done on these components during the warranty period may void the warranty. 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 ma nufacturers as follows:

Kohler Engines Kohler Company

Kohler, WI 53044 800-544-2444 www.kohlerengines.com

Transaxles Hydro-Gear

1411 South Hamilton St. Sullivan, IL 61951

Specifications

MODEL MBSSD

ENGINE

Manufacturer/Model Kohler Command CH740, 2 Cyl. OHV (Air-Cooled) Displacement 44.0 cu. in. (725 cc) HP (@ 3600 RPM) 27.0 Max. RPM (No Load) 3600 ± 100 Governed RPM 3600 ± 100 Max. Torque [ft-lb (N Idle RPM 1200 ± 75 Spark Plug Type Champion RC14YC Spark Plug Gap .030 in. (0.76 mm) Crankcase Capacity 1.9 qts (1.8 liters) Crankcase Lubricant SG/SH/SJ or Higher Grade Oil Only with 10W-30 Viscosity

Oil Filter 12 050 01 5 (2-1/2) Fuel Tank Capacity 10 Gallons (38 liters)

Fuel Automotive Grade Unleaded Gasoline (87 Octane) or Ga sohol

Cooling System Air Cooled

ELECTRICAL SYSTEM

Battery 12 Volt (340 CCA) Charging System 15 Amp Alternator Charging Output 15 Amp DC (Regulated)

·m) @ RPM] 42.7 (57.9) @ 3000

Above 0° F (-18° C) or 5W20 or 5W30 below 32° F (0° C)

Two In dependent Five (5) Gallon Tanks with Selector Valve

(Up to 10% Ethyl Alcohol, 90% Unleaded Gasoline by Volume)

System Polarity Negative Ground Ignition Electronic Capacitive Discharge Starter 12 Volt Electric Key an d Solenoid Operated Interlock Switch Ignition Lockout by Seat Switch, Transmission Neutral and Blade Clutch Circuit Breaker Manual Reset (30A)

TRANSMISSION

Manufacturer/Model Dual, Independent Hydro-Gear Integrated Transaxles Steering Hand Lever Control / Individual Wheel Forward Speed Control Precision Friction Lock Lever, Cruise Control, with Neutral-Park

Position

Specifications

MODEL MBSSD

TRANSMISSION (continued)

Service Brake Dynamic Braking through Transaxles Parking Brake (Internal) Mechanical Lockout for each Transaxle

Neutral Transmission Release by Manual Dump Valve Final Drive Direct Drive Axle from Transaxle

Transmission Fluid

Factory Service 20W-50 Multi-Viscosity Motor Oil (Minimum SL Grade Oil) Transmission Fluid Capacity 79 fl oz (2336 ml) 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

(Single Lever Control)

0-9 (0-14) Infinitely Variable 0-5 (0-8) Infinitely Variable

PTO Shaft Sliding Spline Shaft with Two (2) High-Speed U-Joints Blade Spindle Each Blade (3) Mounts Directly on Belt Driven Spindles Blade Drive Clutch and Brake Manual Mechanical Clutch with Internal Brake

[Stops Blades within Five (5) Seconds of Disengagement]

Max. Blade Speed [20-1/2 in. (52 cm) Blade] @ 3600 RPM Engine

TIRE SIZE

Deck Caster Wheel 13 x 5.00-6 Pneumatic (4-Ply) Drive 22 x 10.50-12 (4-Ply Low-Profile) Rear 13 x 5.00-6 (4-Ply)

TIRE PRESSURE

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

Rear

DIMENSIONS (Tractor and Mower) Length

Width

60 in. (152 cm) SD Model (with Deflector)

Height 43-1/4 in. (110 cm) Wheel Base (Tractor) 42-5/8 in. (109 cm) Tread Width (Tractor) 36-1/2 in. (93 cm)

3200 RPM [18300 FPM (5578 m/min)]

20 PSI (137 kPa)

100-1/4 in. (255 cm)

62 in. (158 cm)

Specifications

MODEL MBSSD

MOWER DECK

Width of Cut 60 in. (152 cm) Cutting Height 1 to 5 in. (3 to 13 cm) Height Adjustment 17 Positions - 1/4 in. (1 cm) Increments

Blade Size

60 in. (152 cm) SD Model 20-1/2 in. (52 cm) Three (3) Clockwise-Rotating Blades Deck Suspension Torsion-Flex Frame with Caster Wheels and

CURB WEIGHT (Approximate)

Tractor Only 730 lb (331 kg) SD Tractor and 60 in. SD Deck 1110 lb (503 kg)

DRIVE BELTS

Engine PTO Walker P/N 2230 Ground Drive Walker P/N 2248

Counterweight Springs

SEAT

FRAME/BODY CONSTRUCTION

Frame/Body 3/16 Plate Steel/14 Gauge Sheet Steel Deck 11 Gauge Steel

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

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

Component Identification

Body Lift

Handle

Forward Speed

Control (FSC)

Friction

Adjustment

NOTE: Control Identification

shown in Operating Instructions section.

Tilt-Up Latch

Counterweight Spring and

Protective Cover

Deck Support

Arm

Footrests

Tilt Bar

Deck Handle

Deck Height

Adjustment Trigger

Deck Support Arm

Height Adjustment Arm

(Cutting Height Adjustment)

Discharge Shield

Deck

Deck Height

Lift Chain

Tilt-Up Hook

(not visible)

Deck

Caster Wheels

Front View and Right Side View

Component Identification

Footrests

Footrest Catch

Assembly

Left Hand

Drive Wheel

Fuel Pickup

Line

Fuel Tank

and Cap

Tailpipe

Muffler

Spread

Tail Wheel

Battery

(not visible)

Rear View and Left Side View

Component Identification

LH Transmission

Control Arm

Steerin g Levers

Dampeners

RH Transmission

Control Arm

LH Transaxle

Expansion

Reservoir

LH Transaxle

Lockout Rod

Parking Brake

Cummins/Fleetguard OptiAir™ Air Cleaner

Air Filter

Cover

Fuel Pickup Line

Fuel Tank

Fuel Tank Cap

RH Transaxle

Expansion

Reservoir

RH Transaxle

Lockout Rod

Clutch

PTO Clutch

Lever

Parking Brake

Linkage

Fuel Selector

Valve

Fuel Pump

(not visible)

Fuel Filter

Air Intake Hose

Oil Fill/

Dipstick

Muffler Heat

Rubber Bumpers

(Body Support)

Top View (Body Raised)

Shield

Air Intake

Plenum

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 instructions. 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 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 proc edures, 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

contained in this manual may result in personal 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:

CAUTION

Possible hazards or unsafe practices that MAY result in MODERATE personal injury or property damage, or machine damage, if warning is ignored and proper safety precautions are not taken.

IMPORTANT: Identifies mechanical information

demanding special attention, since it deals with the possibility of damaging a part or parts of the machine.

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 proper instruction.

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 everyone, especially children a nd 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. We ar 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 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 hearing. Operator hear- ing protection is recommended. 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 switche s are functioning correctly, so the engine cannot be started 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 lifts off the seat with either the Forward Speed Control (FSC) out of the NEUTRAL-PARK position or the PTO clutch in the ENGAGED position.

NOTE: There is a 1 to 1-1/2 second time delay function on the seat switch to avoid engine power interruption when driving over bumps.

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).

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

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

WARNING

The engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.

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. Never

operate the tractor without deck or implement installed.

3. For a beginning operator, learn to steer (maneuver) 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 Speed Control (FSC) into the NEUTRAL-PARK position.

c. Keep matches, cigarettes, cigars, pipes,

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

d. Always fill the fuel tank(s) 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(s) and con-

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

5. In case the transmission drive belt breaks during operation, and if the machine is on a slope, the machine will freewheel 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 stopped or moving slowly, engage the parking brake.

NOTE: This is exactly the same procedure used to normally stop and park the machine.

Safety Instructions

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 the machine if these controls are in the OPERATING position).

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.

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

10. Avoid sudden star ts 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 r oadways.

11. Disengage the blade drive when transporting the machine across drives, sidewalks, etc. Never

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 caution to start, stop, and maneuver. To prevent tipping or loss of control of the machine, avoid sharp turns or sudden changes in direction.

15. When using the tilt-up deck, observe the fol-

lowing recommendations:

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

position.

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

position.

16. In case of a clogged or plugged mower deck: a. Disengage the blade clutch (PTO), set the

parking brake, and turn the engine off before leaving the seat.

b. LOOK to make sure blade drive shaft move-

ment has stopped before trying to unclog

the system. c. Disconnect the spark plug wires. d. Never place hands under the deck - use a

stick or similar tool to remove clogged ma-

terial.

17. If the cutting blades strike a solid object or the machine begins to vibrate abnormally,

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

starting, disconnect the spark plug wires. Thoroughly inspect the mower and r epair any damage before restarting the engine and operating the mower. Make sure cutter blades are in good condition and blade bolts are torqued to 64 ft-lb (86.8 N

·m).

13. Never adjust cutting height while the mower is moving. Before adjusting cutting height or

servicing, move the Forward Speed Control (FSC) into the NEUTRAL-PARK position, engage the parking brake, and disengage the blade clutch (PTO ). Tractor should not be mov- ing while adjusting cutting height.

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

14. Do not operate with the grass deflector chute removed. Keep the deflector in the lowest possible position.

18. Do not touch th e engine or muffler while the engine is running or immediately after stopping the engine. These areas may be hot enough to cause serious burns.

19. When leaving the machine unattended, disen-

gage the blade clutch (PT O), stop the engine, and remove the key.

Safety Instructions

MAINTENANCE

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

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

3. Keep all nuts, bolts, and screws tight to ensure the machine is in a safe, working condition. Check the blade mounting bolts 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.

Unauthorized maintenance operations or modifications to the engine may result in unsafe operating conditions.

11. Use care when cha rging the battery or performing 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 while charging can dissipate. Make sure the battery vents in the caps are open.

c. Keep sparks, flames, and smoking materi-

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

d. Disconnect both battery cables before

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

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

7. Altering the equipment or engine in any manner which adversely affects its operation, performance, durability , or use will VOID the warranty 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 operating speed.

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

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 Section.

Each End of Mower Deck (5808)

LH Fender (2802-1)

Deck Carrier Frame (2748)

SD Deck Discharge Shield (5848)

Engine Shroud (5855)

RH Fender (2802-2)

PTO Guard (8746)

Safety Instructions

DRIVE BELT WALKER P/N 2731 CARLISLE P/N R3VX1250-2

BELT TWIST

DRIVE PULLEY WALKER P/N 2240-1

BELT TWIST

2749

BLADE PULLEY WALKER P/N 2240

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 Section.

BELT ROUTING

DRIVE BELT WALKER P/N 2731 CARLISLE P/N R3VX1 250-2

BELT TWIST

BLADE PULLEY WALKER P/N 2240

DRIVE PULLEY WALKER P/N 2240-1

Deck Housing (2749)

On Precleaner Mount (4107-1)

BELT TWIST

2749

Rear Body, Underside (2107-4)

On Trans fer Mount (2010-4)

Rear Body,

Above Muffler (5805)

Front Body Adjacent to

RH Steering Lever (2807-1)

Deck Carrier Frame (8653)

Deck Housing (8653-1)

On Engine (6810)

Center Body Behind Transaxles

Deck Carrier Frame (8647)

(9804)

Assembly Instructions

SETUP INSTRUCTIONS

Walker Mowers are shipped partially assembled to our distribution network, and are typically assembled by the selling dealer. For any additional assembly besides the following, contact your Walker dealer.

Battery Service

Raise mower body up for battery access. 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.

IMPORTANT: Make sure battery is securely mounted in the frame. A loose battery may cause damage to the case resulting in acid leakage and se vere damage to the machine. A hazard may be created by damage to critical working parts and safety systems.

Wet Battery Service

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 trained technician can activate the batter y 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 u se b y 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.

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 drinking water to the bottom of the vent wells.

2. Charge battery. Refer to Battery Charging in this section.

• 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 hold-down bar, disconnect the battery cables and lift the battery 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 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.

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

Assembly Instructions

Battery Charging

DANGER

BA TTERIES PRODU CE EXPLOSIVE GASES

• Charge the battery in a well-ventilated

area, so that gases produced while charging can dissipate.

• Keep sparks, fla mes, 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).

Deck Caster Wheel Installation

• 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.

2. After charging the battery , adjust the e lectrolyte 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.

Mower Deck Assembly

Deck Caster Wheels Installation

Deck Discharge Shield Installation

Attach the deck side discharge shield by positioning 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 machine without the grass deflector chute attached and in the lowest possible position.

Attach Shield

1. Remove the bolts and washers from each deck caster wheel.

2. Install wheel on fork using bolts and washers. NOTE: Valve stem and grease zerk should

face to the inside of machine.

3. Tighten the bolts and washers.

Deck Discharge Shield Installation

Assembly Instructions

PTO Shaft Guard Installation

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

Carrier Frame

Tube Sockets

Attach Guard

PTO Shaft Guard Installation

Tilt-Up Roller Wheel Installation

Mount the two (2) tilt-up roller wheels on the bracket s on the rear skirt of the deck housing using the P/N 8490 axle bolt, 3/8 in. wave s pring wash er and 3/8-16 in. Whiz locknut. Tighten the axle bolt until the wheel rolls freely, but is not loose.

Mower Deck Installation on Tractor

Deck Installation

1. Lightly grease each deck support arm ( 2) on the tractor. Refer to Mower Deck Inst allation photo for location of deck support arm.

2. Engage the LH deck carrier frame tube socket first on the tractor support arms and then the RH tube socket, slide the deck onto the support arms approximately 3 in. (76 mm).

Retract Coupler Ring

Roller Wheel

Roller Wheel Installation

3. Retract spring-loaded coupler ring on the PTO Tube (provided in Owner’s Packet) and insert coupler tool. Refer to Quick Coupler Installa- tion Tool photo.

Quick Coupler

Installation Tool

PTO Tube

Pull Back Spring-Loaded

Coupler Ring

Quick Coupler Installation Tool

Assembly Instructions

4. Reaching under the tractor , join the PT O tube to the PTO shaft (align arrow decals). Slide the PTO tube onto the spline shaft on the tractor PTO drive shaft.

Arrows on Shaft and Tube

(used to align when sliding together)

Grease Deck

Support Arms

Mower Deck Installation (PTO Shaft Connection )

5. Slide the deck the rest of the way on the deck arms.

PTO

Connection

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.

Spring-Loaded Coupler Ring

In Fully Forward Position

Coupler Ring “Locked” Position

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

Deck Support

Arms

Mower Deck Installation

6. Install the lynch pin through the hole on the end of each support arm to lock the deck in place (refer to Deck Counterweight Spring Installa- tion photo). Two (2) lynch pins are included in the owner's packet of materials.

7. Remove Installation Tool from coupler ring and make sure the ring has “snapped” securely on the spline shaft.

IMPORTANT: DO NOT operate tractor with Quick Coupler Installation Tool installed.

9. 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 Counterweight Spring Installation photo.

Lynch Pins Lock Deck On Support Arms

(not visible)

Deck Counterweight Spring Installation

Counterweight Springs

Clip Onto Body

With Body Tilted Up

Spring Tension Adjustment

Nut Located Under Lower

Spring Hook (not visible)

Assembly Instructions

Deck Leveling

1. Position mower on a smooth, level surface. Set the cutting height to the highest position - 5 in. (127 mm) - for easy access under the deck to measure blade height. Refer to ADJUSTING

CUTTING HEIGHT in Operating Instructions. NOTE: A block of wood cut 5 in. (127 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 the outside blades sideways and measure the

distance from blade tip to ground on each side. If measurements vary more than 1/8 in. (3 mm), adjust the height adjustment rod on the high side to level the deck.

3. Check the front-to-rear level. Rotate the cen- ter blade to point forward. Measure the distance from blade tip to ground on the 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; remove the chain from the deck height adjuster clevis and adjust equally to achieve at least 1/8 in. (3 mm) difference. Reinstall chains.

NOTE: The mower deck and support frame are jig welded; within normal tolerances, very little, if any , adjustment s 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.

Height Adjustment

Front

Rod End

Should not vary more

than 1/8 in. (3 mm)

side-to-side

5 in. (127 mm)

Wood Block

Rod

Rear

Rod End

Front

Rod End

Should be 1/8 in. (3 mm)

to 1/4 in. (6 mm) higher

at the rear of the blade

Rear

Rod End

5 in. (127 mm)

Wood Block

Deck Leveling

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 fuel and lubricants refer to Specifications.

FILL FUEL TANK(S)

Fill the fuel tank(s) using clean, fresh, automotive grade unleaded gasoline (87 octane rating minimum) or gasohol (up to 10% ethyl alcohol, 90% unleaded gasoline by volume). See engine manual for complete fuel recommendations.

DANGER

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

• DO NOT fill fuel tank(s) with the engine

running.

• If the engine is hot, allow to cool before

refueling.

• Use an approved fuel container.

• Fuel the mower outdoors.

CHECK ENGINE CRANKCASE OIL LEVEL

Check the engine crankcase oil level before use and after each 8 hours of continuous operation. Refer to LUBRICATION for Checking Engine Crankcase 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 (inspect air filter every 100 hours). For detailed procedures, refer to CLEANING the Engine Air Cleaner System in Maintenance Instructions.

CHECK ENGINE COOLING SYSTEM

Check that the engine cooling air intake screen is free of obstruction by grass clippings or debris 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 head access panels to inspect and clean].

CHECK SECURITY OF DRIVE TIRE MOUNT-

ING NUTS

The eight (8) Drive Tire mounting nuts should each be torqued to 75-85 ft-lbs. (101.7-115.2 N

INSPECT FOUR (4) DRIVE BELTS

·m).

• DO NOT smoke while refueling.

• Avoid spilling fuel; use a funnel or spout.

• DO NOT overfill the fuel tank(s); 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 tanks. Wipe dirt from around the filler cap(s) before removing. Use a clean fuel storage container and funnel.

IMPORTANT: DO NOT mix oil with gasoline.

Always use fresh, automotive gr ade unleaded gasoline or gasohol. DO NOT use premium, white, or high-test gasoline. DO NOT us e additives, such as carburetor cleaners, deicers, or moisture removing agents. DO NOT use gasoline blended with methyl alcohol.

Engine/PTO and Ground Drive.

CHECK HYDROSTATIC TRANSAXLE OIL

LEVEL

Refer to LUBRICATION for Transaxle Lubrication in Maintenance Instructions.

CHECK TIRE PRESSURE

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

Rear = 20 PSI (137 kPa)

Assembly Instructions

CHECK FUNCTION OF SAFETY INTERLOCK

SWITCHES

CAUTION

Refer to Operating Instructions to check for proper operation of safety switches, both during engine starting and with the operator leaving the seat with tractor moving forward or with mower blades engaged.

CHECK AND CLEAN GRASS BUILDUP

UNDERNEATH MOWER DECK

Refer to CLEANING the Grass Buildup in Mower Housing in Maintenance Instructions for deck tilt-up and deck cleaning information.

DANGER

Never operate cutter blades with deck in raised position because it is hazardous.

The tilt-up deck can be secured in the raised po sition by disengaging the locking arms on each side of the carrier frame and inserting the deck hook into the tiltup latch on the tractor body. Before operating the tractor, make sure to re-engage the locking arms after lowering the deck to the normal operating position.

Do not operate machine with locking arms disengaged.

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, BALANCE, AND SECURITY OF MOUNTING

The blade mounting bolt should be tightened to 64 ft-lb (86.8 N

CHECKING/SERVICING for Sharpen Mower Blades in Maintenance Instructions.

Refer to ADJUSTING CUTTING HEIGHT in Operating Instructions.

·m). If blade sharpening is required, refer to

ADJUST MOWER CUTTING HEIGHT, IF RE-

QUIRED

Tilt-Up Latch

Deck Secured in Tilt-Up Position

PERFORM ANY ADDITIONAL PROCEDURES

called for on the MAINTENANCE SCHEDULE CHART in Maintenance Instructions.

Operating Instructions

CONTROL IDENTIFICATION, LOCATION, AND FUNCTION

CAUTION

Before operating the mower, 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 ope ration of the mower.

Ignition Switch

The ignition switch is located on the right fro nt of the body and is used to start and stop the engine. The switch has three positions: “O” is the OFF position, RUN is the position the key returns to after starting, and “S” is the START position. When starting the engine, turn the key clockwise to the “S” position. Do not hold the key in the “S” position long er than 10

seconds. If the engine does not start, return the key to the “O” position for at least 60 seconds before making a restart attempt. Prolonged cranking can damage the starter motor and shorten battery life. Release the key when the engine starts, and it will return to the RUN position. T o stop the engine, rotate the key counterclockwise to the “O” position.

OFF

Ignition Switch

START

Forward Spe ed

Control (FSC)

Blade Clutch

(PTO)

Body

Latch

Ignition

Switch

Operating Controls

Parking

Brake

Steering

Levers

Choke

(not visible)

Throttle

Hourmeter

Operating Instructions

Engine Choke

The choke control lever (black knob) is located on the left side of the seat. To start a cold engine, move the choke control forward to the ON position. After engine starts, move choke control toward the OFF position, keeping 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 position CAN damage the engine.

Engine Throttle

The throttle control lever (red knob) is located on the left side of the seat and is used to control engine speed. Moving the lever forward toward the FAST position increases engine speed; moving it back- ward toward the IDLE position decreases engine speed.

ChokeThrottle

Forward Speed Control (FSC)

Forward Speed Control (FSC) has two functions: One is to set forward travel speed, and the other is to establish the NEUTRAL-PARK position. Whe n the FSC lever is moved into the FORWARD position, a friction lock holds any forward speed setting from 0 to 9 mph (0 to 14 km/h). The ground speed is proportional to the lever position; the further the lever is advanced forward, the faster the tractor moves. It is not necessary to hold the FSC in position since the friction lock maintains the selected lever position. Pulling back on the steering levers overrides the FSC setting and slows or stops forward travel. Releasing the steering levers allows the tractor to resume forward travel at the speed set by the FSC lever. To stop and park the machine, the FSC lever is moved backward to the NEUTRAL-PARK position.

Steering Levers

Each drive wheel is controlled by its own independent steering lever, for both steering function and FORWARD/REVERSE motion. The FSC lever sets the maximum forward speed, and also sets the forward position of the steering levers. The steering levers operate only with a backward pulling movement of the lever, which causes the drive wheel for that lever to first slow down, stop, and then reve rse with a full backward lever stroke. The levers are released to the FORWARD position for “straightahead” ground travel.

Choke and Throttle Location

NOTE: Pushing forward on the steering levers will

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

Blade Clutch (PTO)

The blade clutch lever has two positions. Pulling the lever FORWARD engages the PTO that drives the mower blades. Pulling the lever BACKWARD disengages th e PTO an d engages the blade brake.

Operating Instructions

Parking Brake

The parking brake functions by locking a detent arm internally into the transaxle. Moving the lever FOR-

WARD engages the parking brake; moving the lever BACKWARD releases the brake.

IMPORTANT: Stop the tractor completely before

engaging the parking brake. Th e parking brake uses a positive mechanical lock similar to the PARK posi- tion on an automotive automatic transmission. If the tractor is moving when the brake is engaged, it will result in sudden stoppage and possible internal damage to the transaxle.

NOTE: If pressure on the parking brake pin (e.g . parked on a hill) makes it impossible to release the parking brake with the parking brake lever , move the mower gently forward or backward to allow the brake detent to release.

Transaxle Lockout Rods

The transaxle lockout rods disengage the transaxles. By lifting the rods up and locking them into place with the shoulder on the rod in the chassi s notch, the transaxles are released to permit freewheeling. By releasing the rods and recessing them back toward the chassis, the transaxles are engaged for normal operation. The transaxle rods in the LOCKOUT position are used to enable moving the machine without the engine running (e.g., for service). Refer to TRANSAXLE LOCKOUTS in this section for operating instructions.

NOTE: The transaxle lockout rods ends should be completely retracted against the chassis, otherwise operation of the transaxle may be erratic.

Hourmeter

The hourmeter , which is located on th e right front of the body, displays operating time accumulated while the ignition switch is in the ON position.

The hourmeter provides maintenance reminders after certain hours of operation. The hourmeter screen will start flashing the reminder one hour prior to the recommended interval and will continue until one hour after the recommended interval (two hours). The hourmeter does not have a manual

reset function.

Procedure Interval* Reminder

Oil Change (Break-In)**

Lubricate and Check Levels

Oil Change

4-6 Hours

24-26 Hours LUBE

49-51 Hours***

OIL

H G

OIL

H G

* These intervals reflect t he actual time that the

reminder will flash (one hour prior to and one hour after the recommended interval).

** This reminder is only used one time. *** In normal operating conditions, oil changes in

100-hour intervals are acceptable. Walker and the engine manufacturers recommend engine oil changes every 50 hours in extremely dirty or dusty conditions or for units with less than 100 hours annual use.

NOTE: The blinking hour glass on the display means that the meter is operating properly.

Hydro Lockout

Rods

Hydro Lockout Rod Location

Hourmeter

Operating Instructions

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

LEFT WHEEL

STEERING LEVER

Forward Position

(No Control Change)

Neutral-Park

Position

Reverse Drive

Wheel Motion

Position

THROTTLE

Fast

Throttle

Position

Idle

Position

RIGHT WHEEL

STEERING LEVER

FORWARD SPEED

CONTROL LEVER (FSC)

Full Forward

Ground Speed

Position

Intermediate

Ground Speed

Position

Neutral-Park

Position

Engaged

Position

Disengaged

Position

ON Position

OFF Position

PARKING BRAKE

CHOKE

BLADE CLUTCH

(PTO)

Engaged

Position

Disengaged

Position

Operating Controls (Top View from Drivers Point of View)

Operating Instructions

STARTING THE ENGINE

CAUTION

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

WARNING

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

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

DISENGAGED.

IMPORTANT: DO NOT crank the engine con-

tinuously for more than 10 seconds at a time. If the engine does not start, turn the key to the OFF position and allow a 60 second cool-down period between starting attempts. Failure to follow these guidelines can damage the starter motor and shorten battery life.

3. After the engine starts, gradually move the choke to the OFF position, keeping enough choke on to allow the engine to run smoothly as it warms up. As soon as possible, move the choke to the OFF position.

IMPORTANT: Make sure the choke is in the OFF position during normal engine operation;

running with the choke in the ON position CAN damage the engine.

ADJUSTING GROUND SPEED AND STEERING

CAUTION

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

NOTE: Release parking brake to prevent extra

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

CAUTION

A safety interlock switch system PREVENTS CRANKING the engine with either the Forward Speed Control or the blade clutch (PTO) out of neutral. If the engine cranks otherwise, the safety system is not working and should be repaire d or adjusted before operating the mower. DO NOT disconnect safety switches; they are for the operator's protection.

2. Move the choke lever to the ON position and move the throttle 1/4 to 1/2 open (toward FAST). Turn the ignitio n switch to the START position to start the engine. Release the key to RUN posi- tion as soon as the engine starts.

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

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

DANGER

Keep feet on footrest at all times when the machine is moving. Never operate the tractor without a deck or implement installed.

Operating Instructions

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

area away from buildings, fences, and obstructions. Learn operation on flat ground BEFORE operating on slopes.

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

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

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

♦ Learn to op e rat e the steering levers with smooth action. Jerky movements are hard on the transmission and lawn. For sharp turns, do not allow the inside wheel to stop and twist on the grass. Pull the steering lever controlling the inside wheel into reverse for a smooth “rolling” turn (one wheel rolling forward while the other rolls backward).

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

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

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

WARNING

In case the transmission drive belt breaks during operation, and if the machine is on a slope, the machine will freewheel 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 stopped or moving slowly, engage the parking brake.

NOTE: This is exactly the same procedure

used to normally stop and park the machine. NOTE: If the FSC lever will not stay in the

selected position, the friction lock needs to be adjusted. Contact your Walker Dealer.

CAUTION

A safety interlock switch (seat switch) will cause the engine to stop if the FSC is out of the NEUTRAL-PARK position and the operator is not in the seat. The function of this switch should be checked by the operator raising off the seat with the tractor moving forward (allow 1 to 1-1/2 seconds off the seat for the time delay functio n); the engine should stop. If the safe ty sys tem is not working, it should be repaired or replaced before operating the mower. DO NOT disconnect the safety switches; they are for the operator's protection.

2. Steer by pulling the lever on the side of desired direction of turn, e.g., pull the LH lever to turn left. To minimize the possibility of overcontrol, use only one hand on both steering levers.

Operating Instructions

ENGAGING THE MOWER

Pull Steering

Levers with

Left Hand

Forward Speed Control

(FSC)

Keep Feet on Footrest

when Moving

Correct Operator Hand Position on the Controls

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

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

4. The FSC may be adjusted forward for faster ground speed and backward for slower ground speed. When mowing, ground speed should be adjusted to match the load on the cutter blades, i.e., as the engine pulls down in heavy cutting, pull back on the FSC lever to reduce ground speed. Adjusting ground speed helps maint a in a balance between engine power and blade speed for high-quality cutting action.

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

not attempt to engage the blade clutch at high engine speeds. This will drastically

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

2. Engage the mechanical clutch by pulling the blade clutch lever forward quickly. DO NOT engage slowly. For disengagement, push the blade clutch lever backward quickly.

CAUTION

A safety interlock switch (PTO switch) will cause the engine to stop if the PTO is in the engaged position and the operator is not in the seat. The function of this switch should be checked by the operator raising off the seat with the PTO engaged (allow 1 to 1-1/2 seconds off the seat for the time delay function); the engine should stop. If the safety system is not working, it should be repaired or replaced before operating the mower. DO NOT disconnect the safety switches; they are for the operator's protection.

IMPORTANT: DO NOT engage the blade clutch

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

blade clutch with the PTO shaft disconnected

(the mower deck removed from tractor).

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

NOTE: If the tractor creeps forward or backward with the FSC lever in the NEUTRAL-PARK position, the transmission control needs to be adjusted. Contact your W a lke r Dealer.

Blade Clutch Engaged

Operating Instructions

Blade Clutch Disengaged

CAUTION

If the cutting blades strike a stationary object while mowing, stop the mower immediately, disconnect the spark plug wires, lift the deck, and inspect the deck and blades thoroughly for damage. Also, make sure the blade retaining bolts are torqued to 64 ft-lb (86.8 N

STOPPING THE MACHINE

·m).

4. Turn the ignition switch OFF.

WARNING

Remove the key from the ignition switch when leaving the mower unattended. This will prevent children and inexperienced operators from starting the engine.

5. Engag e the parking brak e. IMPORTANT: The transaxles lock to prevent

the mower from rolling freely with the engine stopped. However, if the mower is parked on a slope, it is necessary to ENGAGE the parking BRAKE to prevent the mower from creeping. This is due to a small amount of slippage in the transaxles, especially when transmission fluid is warm.

FUEL SELECTOR VALVE

The tractor is equipped with dual fuel tanks. A fuel selector valve regulates which tank is being utilized. The valve is located on the right hand side of the engine. The valve switches between the LH and RH gas tanks. DO NOT run tank dry before switching tanks.

1. Slow the engine to idle; put the throttle in the IDLE position.

2. Pull the steering levers to the NEUTRAL-PARK position and then move the FSC lever backward to the NEUTRAL-PARK position.

3. Disengage the blade clutch. IMPORTANT: DO NOT disengage the blade

clutch with high engine speed (above 1/2 throttle) since the brake action on the blade drive will cause premature wear of the Engin e/PTO Belt and internal braking mechanism (or system).

WARNING

A brake stops the cutter blades from fre ewheeling within five (5) seconds after disengaging the clutch. If the brake system malfunctions and the blades do not stop within five (5) seconds, the brake should be repaired or replaced before operating the mower. Contact your Walker Dealer.

Fuel Selector Valve

Operating Instructions

ADJUSTING CUTTING HEIGHT

WARNING

Never adjust cutting height while the mower is moving. Before adjusting cutting height or servicing, move the Forward Speed Control (FSC) into the NEUTRAL-PARK position, engage the parking brake, and disengage the blade clutch (PTO). Tractor should not be moving while adjusting cutting height.

Cutting height is adjusted from operators seat using the height peddle to assist in rais ing the deck while positioning the height adjustment lever and hitch pin.

1. Disengage PTO and stop tractor.

2. Push down on height peddle until it latches in the full up position.

3. Select desired height by moving the hitch pin to the desired height.

Transport Position

1. Disengage the PTO.

2. Push down on height peddle until it latches in the full up position.

Height

Adjustment Lever

Cutting Height Adjustment Components

Hitch Pin

Height Peddle

4. Push down on the height peddle and lift up on the height adjustment lever . Slowly relea se the height peddle while lifting the lever until there is no pressure on the peddle.

Cutting Height Adjustment

Operating Instructions

TRANSAXLE LOCKOUTS IMPORTANT: DO NOT TOW this mower with the

transmission lockout engaged. Towing can produce excessive internal pressure and damage the transaxle(s).

To move the mower with the engine NOT running (dead battery , maintenance, etc.), the transaxles are unlocked (released).

1. Raise the body.

2. Pull up the transaxle lockout rods on both the RH and LH transaxles and secure into place by shouldering both rods in the chassis notch area.

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

Hydro Lockout Rod

RECOMMENDATIONS FOR MOWING IMPORTANT: Operate the engine at full speed

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

• Keep the mower deck clean.

• Mow with sharp blades. A dull blade tears the

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

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

too tall. Mow frequently and do not cut grass too

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

• When mowing, operate the engine at or near full

throttle for the best cutting action. Mowing with a lower engine RPM causes the mowing blade to not cut clean and tear the grass. The engine is

designed to be operated at full speed.

• When mowing in adverse conditions (tall and/or

wet grass), mow the grass twice. Raise the mower to the highest setting - 5 in. (127 mm) - for the first pass and then make a second pass cutting to the desired height.

Hydro Lockout Rod - Freewheel Position

4. After moving the mower, release the rods, placing them in the normal OPERATING position. The transmission rod ends should be completely retracted against the chassis, otherwise operation of the transmission maybe erratic.

Hydro Lockout Rod

• Use a slow setting on the FSC for trimming

operations.

Hydro Lockout Rod - Normal Operating Position

Operating Instructions

• Make sure the mower is leveled properly for a

smooth cut. Refer to Deck Leveling in Assembly Instructions.

• Use an alternating stripe mowing pattern for

best appearance and vary the direction of the stripe

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

• Avoid damage to the grass by slipping and skid-

ding of the drive tires. Use smooth control movements of the steering levers since the transaxles are

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

• The side discharge shield must not be removed

and must be kept in the lowest possible position to deflect grass clippings and thrown objects downward. Orient the side discharge away from sidewalks or streets to minimize cleanup of clippings. When mowing close to obstacles, orient the side discharge away from obstacles to reduce the chance of damage to property by thrown objects.

Discharge

Shield

Maximum Recommended

Side Slope - Do Not Operate

on Steep Slopes

TEMP

PRESS

20°

60 in.

Maximum Recommended Side Slope

RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORT

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

22 in.

Side Discharge Shield in Lowest Position

• When operating on a slope, reduce s peed and

use caution to start, stop, and maneuver. Avoid

sharp turns or sudden changes in direction. The

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

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

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

• The tractor body should never be tilted for-

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

cause the deck to unhook fr om the tractor and fall with considerable force, potentially causing deck or tractor damage and/or bodily injury.

• When transporting a tractor with the deck in the

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

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

Maintenance Instructions

CAUTION

Maintenance procedures requiring special training or tools should be performed by a trained technician.

MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MBSSD

Service Item

Check Engine Crankcase Oil Level x 35

Daily

Hours

100

Hours

200

Hours

400

Hours Yearly

Every

2 Years

Ref.

Page

Check/Clean Engine Air Cooling System*

Check Air Filter Restriction Gauge x 41 Clean Grass Buildup Under Deck x 44 Service Mower Blades x 47

Check Security of Air Filtration Components

Lubricate Grease Fittings and Oil Points*

Check Transaxle Fluid x 37 Check Tire Pressure x 47

Check Drive Belts (Engine/PTO, Ground Drive)

Change Engine Crankcase Oil** x Check Air Filter Element *** x 42 Clean Engine Cooling Fins x 43

Check Security of Drive Tire Mounting Nuts (75-85 ft-lbs.)

Clean Transaxle Cooling Fins x 46 Change Engine Oil Filter x 35 Check/Regap Spark Plugs x 49 Change Transaxle Oil and Filter x Check Fuel Lines and Clamps x 49 Replace Air Filter Element

and Dust Ejection Valve *** Service Battery x47 Replace Fuel Filter x52 Replace Fuel Lines and Clamps

x43

x47

x37

x49

x20

ΔΔ

x42

∗ More often in extremely dusty or dirty conditions

(Refer to notes about air cleaner element under IMPORTANT TIPS FOR CARE OF KOHLER ENGINE)

∗∗ Change engine oil and filter after first 8 hours

of operation of a new engine (break-in period)

∗∗∗ Air cleaner is remote mounted Cummins/Fleetguard

OptiAir™ unit, replace filter every year

Δ Change oil every 50 hou rs when operating

in dry, dirty conditions

ΔΔ Initial oil and filter change at 75-100 hours

CAUTION

When performing maintenance with the mower body raised, a safety prop should be installed from back of body t o c hassis frame (fail-safe protection in case of failure of body lift support).

Maintenance Instructions KOHLER TIPS

IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE

Fuel System

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

ganic material.

• Change fuel filter on a regular basis and when

contamination is suspected or found in the fuel.

Starting/Stopping

• Start engine with the throttle advanced off idle

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

• Keep the battery fully charged.

• Match crankcase oil viscosity to the ambient tem-

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

• Position the throttle control between half and full

throttle, then stop the engine.

Cooling System

• Keep engine air intake screen and cylinder head

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

• Periodically remove two access panels in the en-

gine shroud to inspect and clean cylinder head cooling fins.

• Check performance of the cooling system by

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

DANGER

Air Cleaner System

• Use only Cummins/Fleetguard air cleaner

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

• Use the air flow restriction gauge to indicate the

need to service the air filter.

• DO NOT overservice or frequently “disturb” the

air filter. A dirty air filter actually cleans better than a new one. Changing the air filter too often can actually reduce filter efficiency and increase the o pportunity for traces of dust to en ter the engine. Wait until the element really needs servicing as indicated by the air flow restriction gauge.

• When the air filter element is removed or re-

placed, make sure all dust is cleaned out of the air cleaner housing and hose. Use a damp clo th and

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

• Periodically check the air intake hose for cuts,

nicks, etc., and the hose clamps for tightness.

Oil

• Use only multi-viscosity oils as specified with the

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

• Use only Kohler oil filters. Aftermarket filters

may not seal properly and/or have the incorrect

pressure relief valve for proper lubrication.

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

• Operate the engine at full speed when mowing.

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

Maintenance Instructions LUBRICATION

LUBRICATION

WARNING

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

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

Engine Oil

Engine Break-In Oil

No special break-in oil is required. The engine is serviced with 10W-30, Service Class SG oil from the factory. The oil should be changed after the initial engine break-in period of 5-8 hours. Thereafter, change oil after every 100 hours of operation.

Checking Engine Crankcase Oil Level

Check the engine crankcase oil level before use and

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

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

EACH USE.

IMPORTANT: DO NOT operate engine without

sufficient oil supply in the crankcase. DO NOT operate with oil level below the LOW mark or above the FULL mark on the dipstick.

Full Mark

Low Mark

Dipstick Operating Range

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

mark.

1. Park the mower on a level surface with the engine stopped. Also, make sure the engine is

cool and oil has had time to drain into the sump [allow at least five (5) minutes after stopping the engine].

IMPORTANT: NEVER check or add oil with the engine running.

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

3. Remove the dipstick, wipe off with a clean rag, then reinsert the dipstick into the tube and tighten.

4. Remove the dipstick again and check the oil level on the dipstick. The oil level should be within the “Operating Range” on the dipstick (between the LOW mark and the FULL mark).

IMPORTANT: DO NOT overfill crankcase (oil above FULL level) as this CAN result in engine overheating, loss of power, and possible engine damage.

Changing Engine Crankcase Oil/Oil Filter

Change the engine crankcase oil after every 100 hours of operation and the oil filter after every 200 hours of operation as follows:

1. Park the mower on a level surface with the engine stopped. The engine oil should be

warm before draining. If not warm from operation, start the engine and run a few minutes to warm the oil.

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

Maintenance Instructions LUBRICATION

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

4. Before removing the oil filter, clean the area around the filter to keep dirt and debris out of the engine.

5. Remove the old oil filter and wipe off the filter mounting surface on the engine.

Oil Fill/

Dipstick

Dipstick and Oil Fill

(view from above left side of tractor)

7. Install the new oil filter on the engine. Turn the oil filter clockwise until the rubber gasket contacts the sealing surface, then tighten the filter an additional 1/2 to 3/4 turn.

8. Reinstall the drain plug.

9. Fill the crankcase with new, clean oil. Use only crankcase lubricants recommended by the engine manufacturer. Refer to Specifications in this manual or the engine owner’s manual. Use the recommended oil viscosity for the expected ambient temperature. Oil with the correct viscosity will aid starting in cold weather and assure proper lubrication in hot weather . Fill to FULL mark on the dipstick; crankcase capacity is 1.9 quarts (1.8 liters) when changing oil and filter.

IMPORTANT: Check the dipstick reading before pouring in the last 1/2 pint of oil and fill only to the FULL mark. The oil level should never be over the FULL mark on the dipstick; overfilling can result in engine overheating and loss of power.

10. Start the engine and check for oil leaks around the oil filter. Stop the engine, recheck the oil le vel, and add oil if necessary. (When the engine is first operated with a new oil filter , the oil level will drop slightly as the filter is filled with oil.)

Oil Filter

Oil Drain and Oil Filter Locations

(view from above right side of tractor)

6. Apply a thin coating of new oil to the rubber ga sket on the replacement oil filter.

IMPORTANT: Use ONLY oil filters from the engine manufacturer . Afte rmarket oil filters may not seal properly and/or may not have the correct pressure relief valve for proper lubrication.

Oil Drain

Maintenance Instructions LUBRICATION

Mower Deck Spindle Lubrication

These spindles are permanently sealed and require no lubrication.

DSD60 Mower Deck Lubrication

Lubricate the U-Joint in the drive shaft ever y 8 hours with SAE general purpose lithium or molybdenum base grease.

Transaxle Lubrication

• The transaxle oil lubrication is SAE 20W-50 (API

Service Class SL or higher) engine oil.

• Inspect both transaxle cases and hoses after

every 100 hours of operation for visible leaks.

• The fluid levels for each transaxle can be

checked visually by looking at the fluid levels in each expansion reservoir. When the transaxles are cold, the fluid level in the expansion reservoirs should be between 1/4 and 1/2 in. (0.64 cm and 1.27 cm).

Grease Fitting and Oil Point Lubrication

Lubricate the grease fittings and oil points after every 25 hours of operation. Lubricate more often when operating in dusty or dirty conditions. Use SAE general purpose lithium or molybdenum base grease for grease fittings and light machine oil (SAE

10) to lubricate oil points. Lubricate the locations

shown in the Chassis and Deck Lubrication Points illustration.

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

tor) require routine lubrication after ever y 8 hours of running time.

NOTE: The best way to lubricate the PTO tube half of the universal joint assembly is to remove it from the tractor. See instructions for removing and installing PTO quick coupler, refer to Deck Installation in

Mower Deck Installation on Tractor in the Assem- bly Instructions.

Reservoir Cap

Hot Level

Cold Level

Hose

Expansion Reservoir Location

Maintenance Instructions LUBRICATION

Ident Lubrication No. No. Location Type Places

1 Deck Caster Wheel Fork Pivot Grease 2 2 Deck Caster Wheel Bearing Grease 2 3 Deck Belt Tensioner Pivot Grease 1 4 Front Deck Lift Pivot Grease 2 5 Rear Deck Lift Pivot Grease 2 6 Pivot Assembly, Tilt-Up Deck Grease 2 7 Deck Support Arm Socket Grease 2 8 Steering Lever Pivot Grease 2 9 Transaxle Oil Reservoir Oil 2

10 Deck-to-PTO Coupling Grease 1

(Grease Slide Area) 11 Deck Support Arm Pivot Grease 2 12 Universal Joint Tube Assembly Grease 13 FSC Lever Pivot Grease 1 14 Hydro Idler Arm Pivot Grease 1 15 Body Latch Oil 2

* 1

Ident Lubrication No. No. Location Type Places

16 PTO Clutch Lever Pivot Grease 1 17 PTO Belt Tightener Pivot Grease 1 18 Throttle Control Cable Ends Oil 2 19 Choke Control Cable Ends Oil 2 20 Tail Wheel Caster Fork Pivot Grease 2 21 Rear Wheel Pivot Grease 1 22 Rear Wheel Bearing Grease 2 23 Engine / Oil Filler Oil 24 Parking Brake Pivot Grease 1 25 Choke Control Pivot Oil 1 26 Throttle Control Pivot Oil 1 27 Universal Joint Shaft Assembly Grease

** 1

* 1 * Grease every eight (8) hours. ** Refer to Engine Oil located on page35.

Maintenance Instructions LUBRICATION

5 6

3 4

6 7

8 9

10 11

18 & 26

19 & 25

24 15

14 15

18 19

20 21

Chassis and Deck Lubrication Points

Maintenance Instructions LUBRICATION

Transaxle Oil and Filter Change Change the transaxle oil after the initial break-in

period of 75-100 hours. Thereafter, change oil every 400 hours of operation as follows:

1. Thoroughly clean the exterior of the transmission housing before servicing. Using a 1/4 in. hex wrench, remove the plug on the lowe r inside of each transaxle allowing the oil to drain.

2. Remove and replace the oil filters using a 3/8 in. hex wrench. (Refer to Transaxle Oil Drain Plug, Filter, and Guard Location illustration.)

Oil Filter

8. Fill both reservoirs to 1/4-1/2 in. (6-13 mm) with 20W-50 (API Service Class SL or higher) oil.

9. Start and drive the unit for 1- 2 minutes.

10. If the transaxles sound noisy or have poor steering response, recheck oil level in both transaxles by removing the elbows (check oil level at fill opening).

1 1. If oil needs to be added refer back to step s 4-10.

Oil Filter

Guard

Transaxle Oil Drain Plug, Filter, and

Guard Location

(Shown with Deck Support Arms

Removed for Clarity)

3. Reinstall drain plugs.

4. Remove the oil reservoir hose attached to the elbow on top of the transaxles and remove the elbows to access the oil fill openings.

5. Fill the transaxles with 20W-50 (API Service Class SL or higher) oil through the opening where the elbows were. Fill up to the opening.

6. Before reinstalling the elbows, screw the locking nut on the elbows down until they are snug (the o-ring on the elbow will be to the bottom of the o-ring groove).

7. Reinstall the elbows. When the elbow begins to be snug, position the elbow as it was when removed and tighten the locknut.

Oil Drain

Plug

Maintenance Instructions CLEANING

CLEANING Engine Air Cleaner System

Cummins/Fleetguard OptiAir™ Air Cleaner

A remote mounted Cummins/Fleetguard OptiAir™ air cleaner provides the air filtering function. The paper filter element slides over an outlet tube inside the air cleaner canister with radial sealing action, eliminating the possibility of dust leaks due to improper filter installation. Intake design, internal baffling, and a dust ejection valve provide dust separation and automatic precleaning action. Daily or frequent servicing of the air cleaner is not required. Use the air restriction gauge on the air cleaner outlet to indicate when the air filter needs servicing -- a red flag will appear when the filter is overly restricting airflow into the engine.

IMPORTANT: Use only Cummins/Fleetguard air filter elements for replacement (Walker 2090-1 or 2090-3). Aftermarket filters may not seal prop erly or filter efficiently.

Canister

OptiAir™

Filter Element

Dust Ejection

Air Cleaner Components

(shown with cover being removed)

IMPORTANT: The Cummins/Fleetguard air cleaner

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

Cover

Valve

Cummins/Fleetguard

Air Cleaner

Air Restriction

Gauge

Hose

Clamp

Air Cleaner

Band

Flex

Hose

Safety

Filter

Air Cleaner

Cartridge

Hose

Clamp

Engine

Cummins/Fleetguard

Air Cleaner Cover

Dust Ejection

Valve

Engine Air Cleaner System Components

Maintenance Instructions CLEANING

5. Without removing, visually inspect the condition

Air Restriction

Gauge

of the safety filter for damage or holes. The safety filter should only be removed for yearly replacement (or when dirty or damaged).

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

Push Button to Reset

Indicator After Service

Air Restriction Gauge Location

Inspect the paper element after every 100 hours of service and replace the element and safety filter yearly (or when dirty or damaged). More frequent replacement may be required when operating in extremely dusty conditions as indicated by the air restric tion gauge . Service the air cleaner as follows:

1. Lift Mono Latch Twist Lock™ and twist the OptiAir™ cover to the left into the "open" position to remove the air cleaner cover. Wash the cover and dust ejection valve. Check that these components are in good condition. The dust ejection valve is subject to wear and deterioration and should be replaced yearly or when damaged. The lips of the valve should close and fit together; any cracks, deformation, or wear in the valve is cause for replacement.

2. Remove the filter element by pulling it out of the canister. There will be some initial resistance as the filter seal breaks loose and slides off of the outlet tube. Gently move the end of the filter up and down and side to side or twist to loosen the seal. Use gentle action to minimize the amo unt of dust dislodged as the filter is removed.

3. Replace the filter element. NOTE: Washing the element in water or clean-

ing solution is not recommended. Do not try to clean the element with compressed air.

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

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

IMPORTANT: Any du st le ft on the ins ide of the outlet tube will go into the engine and cause wear.

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

9. Insert and seat the safety filter and OptiAir™ element carefully into the canister , applying pressure at the outer rim of the filter; not at the flexible center. Make sure the filter element is completely in place before installing the cover.

NOTE: DO NOT use petroleum based lubricants on the sealing surfaces of the filter; u se talcum powder or dry silicone lubricants if required for filter installation.

OptiAir™

Canister

Safety Filter

Radial Sealing

Surface

Air Filter Element Replacement

Filter Element

Maintenance Instructions CLEANING

DOWN

10. Install the cover with the word “DOWN” properly oriented to the bottom of the canister . Twist the OptiAir™ cover to the right and put into the "closed" position.

Mono Latch

Twist Lock™

Rotating Engine Screen

DOWN

Orient to Bottom

of Canister

Dust Ejection

Valve

Proper Orientation of Air Cleaner Cover

1 1. Check the air intake hose for cuts, nicks, cracks,

etc., and the hose clamps for tightness.

12. Reset the air re striction indicator (press butt on on the end of indicator).

Engine Cooling System

Air Intake System

To prevent engine overheating and possible engine damage, clean grass clipping s, chaff, and dirt from the rotating engine air intake screen after every 8 hours of operation. In certain mowing conditions (dry grass, leaves, tree “cotton”, etc.), it may be necessary to check and clean the screen several times each day to prevent engine overheating.

Keep Engine Screen Clean

Cylinder Head Cooling Fins

It is essential for performance and longevity of the air-cooled engine to keep the cylinder head cooling fins clean and free of obstruction. After every 8 hours of operation, check the performance of the cooling system by starting the engine, holding a hand adjacent to the cylinder head, and feeling the cooling airflow . If there is little or no airflow, clean the cooling fins as described on the next page.

DANGER

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

Check Airflow

with Hand

CAUTION

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

Cooling System Airflow

Maintenance Instructions CLEANING

Every 100 hours, inspect and clean the cooling fins (more often when operating in extremely dusty, dirty conditions). Remove the two ( 2) co oling fin acces s panels in the engine shroud and clean the cooling fins and external surfaces using compressed air. Make sure to reinstall the access panels before op erating the engine.

Engine Cooling

Fin Access Panels

Kohler Engine

Shroud

Engine Air

Intake Screen

Grass Buildup in Mower Housing

DANGER

Before raising or removing the mower deck for cleaning, stop the engine, remove the ignition key , an d disconnect the sp ark plug wires.

1. Release hood latch assembly (2) and remove footrest.

2. Rotate locking arms upward on each side of the carrier frame to release carrier frame for tilting action.

Engine Air Intake Screen

and Cooling Fin Access Panels

Locking Arm Rotation

3. Install tilt bar into front of deck.

Tilt Bar Installed

Maintenance Instructions CLEANING

4. Using the tilt bar, raise deck to the TILT-UP posi- tion and insert the deck hook into the tilt- up latch on the tractor body.

Tilt-Up Latch

Tilt-Up Hook

on Deck

Deck Secured in Tilt-Up Position

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

8. Reinstall footrest by inserting locking fingers under deck plate and reattaching hood latch assembly.

Footrest

Locking

Finger

Deck Plate

Hood Latch

Assembly

Footrest Installation

CAUTION

Do not operate machine with deck locking arms disengaged.

NOTE: If the buildup is severe, it may be easier

to clean the deck by removing the deck assembly from the tractor and standing the desk assembly on its “nose”.

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

deteriorates and clogging begins to occur

because of too much buildup on the baf fling and housing.

DANGER

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

6. Lower the deck to the normal operating position and rotate locking arms downward.

7. Remove tilt bar and store on carrier frame.

Maintenance Instructions CLEANING

Transaxle Cooling Fins

Keeping the cooling fins on the transaxles clean and free of obstruction is essential to avoid overheating the transmission fluid and shortening transmission life. The cooling fins should be checked every 100 hours; and cleaned if necessary.

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

IMPORTANT: In case an oil leak develops on the input shaft, the cooling fan blowing dusty air and oil on the transmission will quickly pack the cooling fins with oily dirt. If this condition occurs, contact your dealer immediately to avoid overheating and damaging the transaxle.

An additional procedure in maintaining transaxle cooling is to inspect the cooling fans. Replace the fan(s) if blades are missing or damaged.

Cooling

Fans

Transaxle Cooling Fans

Maintenance Instructions CHECKING/SERVICING

CHECKING/SERVICING

DANGER

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

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

inspection and should be done without “disturbing” the filtration components.

On a daily basis, visually inspect the external condition of the complete air cleaner system. The following items should be inspected:

1. Check the Cummins/Fleetguard OptiAir™ air cleaner canister for damage. Make sure the cover is in place and the cover latch is secure do not run the engine without the air cleaner cover in place and secure.

Charging the Battery

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 ma-

terials away from the battery at all times.

• Make sure the batt ery cap vents are open

(check manifold vent on each cap).

• Make sure the battery charger is un-

plugged before connecting or disconnecting cables to the battery.

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

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

2. Inspect the air intake hose for cracks, nicks, cuts, etc., and check the hose clamps for tightness.

3. Check to ma ke sure the air flow indicator is in place and tight.

Battery NOTE: For initial battery service during setup, refer

to Battery Service in Assembly 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 critical working parts and safety systems.

Cleaning the Terminals

If battery terminals are corroded, remove battery from the mower. Using a wire brush, remove corrosion with a solution of one part baking soda and four part s water. Rinse with clean water . Coat the terminals with petroleum jelly or termin al protector spray to retard further corrosion.

• 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.

Tire Pressure

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

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

Wheel Nuts Torque

Check every 100 hours the eight (8) Drive Tire mounting nuts. They should each be torqued to 75-85 ft-lbs. (101.7-115.2 N

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

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

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

otherwise damaged (refer to REPLACING/ REPAIRING the Mower Blades in this section).

Use th e following procedure to check and sharpen blades:

·m).

Maintenance Instructions CHECKING/SERVICING

NOTE: Keep blades sharp - cutting with dull blades not only yields a poor mowing job but slows the cutting speed of the mower and causes extra wear on the engine and blade drive by pulling hard.

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

2. Raise the deck and secure it in the tilt-up position (refer to Deck Secured in Tilt-Up Position photo in CLEANING of Grass Buildup in Mower Housing in this section).

DANGER

ALWAYS wear eye protection and glo ves when sharpening a blade.

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

CAUTION

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

NOTE: PTO shaft must be disconnected

before checking blades for straightness.

3. Chec k the blades for straightness by ma rking the blade tip position inside the deck housing, and then rotating the opposite end of the blade to the same position and comparing. If the difference in blade tip track is more than 1/8 in.

(3 mm), the blade is bent and should be replaced.

WARNING

DO NOT try to straighten a blade that is bent. NEVER weld a broken or cracked blade. ALWAYS replace with a n e w b la d e to assure safety.

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

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

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

Sharpen at Original

30° Angle

30°

Do Not Grind or

Sharpen on Underside

Mower Blade Profile For Sharpening

Blade Balancer

Blade Balanced on Magnetic

Wall-Mounted Balancer

7. Mount the blade with wing tips pointing up into the housing. Reinstall the blade, washer, and bolt. Tighten the bolt to 64 ft-lb (86.8 N

Intersection

Wear Area

Wing Tip

·m).

Maintenance Instructions

CHECKING/SERVICING/

REPLACING/REPAIRING

Drive Belts

Raise the body and inspect the condition of the four (4) drive belts after every 25 hours of operation -engine/PTO drive and g round drive. If the belts show signs of cracking or deteriorating, the belts should be replaced. Refer to REPLACING/REP AIR-

ING the Drive Belts in this section. Spark Plugs Every 200 hours, remove the spark plugs, inspect,

clean, and reset the gap (or replace with a new plug). Clean spark plug with a wire brush. If the

electrodes are burned short or pitted, replace the plug (refer to Specifications for the proper type of replacement plug). Check the spark plug gap with a wire-type feeler gauge and set the gap to 0.030 in. (0.76 mm). Reinstall and tighten to 18 ft-lb (24.4 N

Fuel Lines and Clamps Every year, inspect the fuel lines from the tanks to

engine for deterioration or damage. Also, inspec t the fuel line clamps for tightness. Good preventive maintenance calls for complete replacement of fuel lines and clamps every two (2) years.

Blade Brake Action

·m). Both spark plugs should be replaced yearly .

REPLACING/REPAIRING

DANGER

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

IMPORTANT: ALWAYS use genuine factory re-

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

Drive Belts There are four (4) individual belt s on the machine:

• Engine/PTO Belt [Matched Set (3)]

• Ground Drive Belt

The belts may be removed and replaced using the

procedures described on the following pages.

Ground

Drive Belt

Clutch

(Ref)

WARNING

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

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

working properly, all rotation will stop five (5) seconds after disengagement of the clutch. If the

brake system malfunctions -- blades do not stop in five (5) seconds -- repair the brake before opera ting the mower.

Engine/PTO Belt

(Matched Set)

Belt Locations (Engine Hidden for Clarity)

Maintenance Instructions REPLACING/REPAIRING

Engine/PTO Belt

1. To remove the engine/PTO belt: a. Loosen and remove idler tension bolt and

jam nut. b. Relax belt by depressing idler arm. c. Roll the belts off the pulley and remove the

belts.

Idler Tension

PTO

Pulley

Engine/PTO Belt (Disengaged)

(Engine Hidden for Clarity)

2. Rever se the removal procedure to re place the engine belts.

Bolt

Jam Nut

Idler Arm

Engine/PTO

Belts

1/2 in. deflection

PTO

Pulley

Idler Arm

Engine/PTO

Belts

Engine/PTO Belt (Engaged)

(Engine Hidden for Clarity)

Maintenance Instructions REPLACING/REPAIRING

Ground Drive Belt

1. To remove the ground drive belt: a. Raise the spring-loaded idler to relax belt.

LH Transaxle

Idler Pulley

Raise Idler Pulley to

Ground Drive

Belt

Relax Belt

b. Slide belt off pulleys, then release the

idler.

Tension

Spring

Hydro Idler

RH Transaxle

Drive Pulley

Arm

Ground Drive Belt Assembly (Disengaged)

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

Ground Drive

Belt

LH Transaxle

Idler Pulley

RH Transaxle

Drive Pulley

Hydro Idler Arm

Ground Drive Belt Assembly (Engaged)

Maintenance Instructions REPLACING/REPAIRING

Fuel Filter

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

In-Line

Fuel Filter

Fuel Filter Location

IMPORTANT: Replace the fuel filter only in a clean

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

Mower Blades

Mower blades are removed and remounted as described in the Sharpen Mower Blades instructions (refer to CHECKING/SERVICING to Sharpen Mow- er Blades in this section). During the course of sharpening and inspecting mower blades, if there are

any of the following conditions of wear or damage, blades should be replaced for reasons of safe-

ty and performance of the machine:

• An excessive amount of the flat section of the

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

• Examine ends of the blade carefully , especially the

intersection where the flat section of the blade turns up to form the “wing tip” (refer to Mower Blade Pro-

file For Sharpening illustration in Sharpen Mower Blades instructions). Since sand and abrasive ma-

terial can wear metal away in this area, the blade should be replaced when metal thickness has

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

DANGER

Gasoline is extremely flammable and can be highly explosive. To minimize danger:

• Use only an approved fuel container for

gasoline.

• DO NOT allow open flames or sparks

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

• Wipe up spilled gasoline immediately

and completely.

1. Expand and slide clamps on either side of the filter away from filter and pull fuel lines off filter.

2. Replace filter.

DANGER

When blades are operated over sandy soil, and if blades are allowed to wear, a “slot” may be worn into the wing tip of blade. Eventually a piece of the blade may break off creating a serious potential for injury or damage.

• Check the blades for straightness by marking

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

• Inspect the blade surface, especially in formed

areas, for cracks. Replace the blade if any cracks are found.

WARNING

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

Maintenance Instructions

Reinstall the blades following procedure from Sharpen Mower Blades instructions. If blades are re- placed, always use Walker original equipment blades to ensure safety and optimum per formance. The quality and performance of replacement blades offered by other manufacturers cannot be guar- anteed, they could be dangerous.

CAUTION

ALW A YS use genuine factory replacement parts. Substitute parts CAN resu lt in product malfunction and possible injury to the operator.

REPLACING/REPAIRING/

ADJUSTMENTS

Levers should sit

parallel to each other

ADJUSTMENTS Transm ission Control IMPORTANT: The proper adjustment of the tran-

saxle control stops is essential for efficient operation and life of the transaxle. These stops are properly adjusted at the factory and should only require readjustment if the transaxle or related control linkage is removed or changed.

NOTE: It would not be unusual for a new machine, after initial 5 or 10 hours of operation, to begin to not travel straight (this is due to the break-in of the transaxles).

Steering Lever Position Adjustment - Step 1

NOTE: For proper operation, the steering levers should be adjusted to sit evenly using the following procedure.

1. Examine the steer ing levers to make sure th ey are parallel front to back in relation to one another. If they are not equal, adjust accordingly. (The handles may or may not be even at this point.)

NOTE: The LH steering lever is non-adjustable. This procedure will require adjustment of the RH lever to make it even with the LH lever.

Lever Alignment

2. Adjust the position of the RH lever by turning the stop bolt in the Speed Control Actuator in or out. Turning the stop bolt in will make the RH lever move back, and turning it out will make it move forward. Tighten the locknut.

Stop

Bolt

Stop Bolt Location

Maintenance Instructions ADJUSTMENTS

Steering Handles Adjustment - Step 2

1. An adjustment range of approximately 3 in. (76.2 mm) is available on the steering handles the handles can be adjusted forward or aft depending on the arm length of the operator. The handles can be adjusted by loosening the locknut at the pivot point and the locknut holding the handle in position in the adjustment slide. Adjust the handles into the most comfortable position and tighten both locknuts.

Locknut

(Position)

Adjustment

Slide

Locknut

(Pivot Point)

Steering Adjustment

4 in.

(101.6 mm)

Steering Lever Adjustment

Neutral Position Adjustment - Step 3

1. With the Forward Speed Control (FSC) in neutral, the lever should be straig ht up. Adjust by loosening the jam nuts on the FSC Rod and turn the rod to attain the straight up position. T ighten the jam nuts.

2. The initial adjustment for neutral is to loosen the jam nuts on each end of th e Hydro-Gear Control Rods and turn the rods to achieve a measurement of 4 in. (101.6 mm) between the jam nuts. Be sure to tighten jam nuts before making the measurement.

Actuator Rod Length Adjustment

3. Block the tractor up so the drive tires are off the ground.

FSC Position

4. With the FSC in neutral, start the engine. (Operate first at idle and then normal operating speed) and check for movement of drive wheels.

Maintenance Instructions ADJUSTMENTS

NOTE: If the engine will not start, check and adjust the neutral safety switch (refer to Neutral Switch Adjustment - Step 6).

5. With the FSC in the neutral position and the engine running, the wheels should not move. If a drive tire is moving, the Control Rod on that side is out of adjustment. Adjust that side to achieve neutral. Now both transaxles are in the neutral window.

Control Rods

Neutral Travel End

(Shown with Parts Removed for Clarity)

Straight Tracking Adjustment - Step 5

1. Sit in the seat, start the engine, set throttle at full speed, and with the FSC in the NEUTRAL-P ARK position check for movement of either drive wheel (if either wheel moves backward or forward, refer to the Neutral Position Adjustment - Step 3 and readjust).

Neutral Window

(Front Body Hidden for Clarity)

6. One at a time adjust the left and right Control Rods to find the center of the neu tral window. Shorten the rods until the drive tire turns forward then lengthen it until the drive tire turns in reverse (approximately 1 turn). Position the rods halfway between forward and reverse. Tighten the jam nuts.

7. Lower drive tires onto ground.

Full Forward Speed Adjustment - Step 4

1. Move the FSC to the full forward speed position.

2. Raise the body. The set screws in the left and right Transmission Control Arms should not be contacting the locating stud in the transaxle. If they are, back the set screws out until they do not touch.

2. Check for straight ground tracking on a level surface (with hands off the steering levers). Set the FSC at several different speeds and observe if the mower moves in a straight line (use cement joint or other line on ground for reference).

3. If travel is not straight, shorten the control rod of the slow side (adjust in 1/8 turn increments) to match the faster side while maintaining the neutral position. If straight tracking and neutral can not be achieved, turn the control rod back to where neutral can be achieved.

4. Lengthen the control rod of the faster side (adjust in 1/8 turn increments) to match the slower side while maintaining the neutral position.

5. If the forward travel is straight throughout the speed range, except at maximum speed - place the FSC in full forward, turn the set screw in the Transmission Contro l Arm, o f the fa ster side, i n until it contacts the hydro stud. (T ur ning the set screw in slows the wheel.) Turn the set screw in an additional 1/8 turn. Recheck for equal full forward speed. Adjust this set screw until equal full forward speed is achieved. Tighten the ja m nut.

Maintenance Instructions ADJUSTMENTS

Forward Speed Control Friction Adjustment - S tep 7

Neutral Travel End Adjust

FSC Switch - Neutral Adjustment - Step 6

1. Place the FSC in neutral position. Loosen mounting screws and adjust switch up or down accordingly.

FSC Switch

FSC Switch Location

Switch Closed

in Neutral

FSC Switch

Actuator Arm

FSC Position With Levers

1. Place the FSC in the full forward position and pull both steering levers back; the FSC lever should not move. If the FSC lever moves back the friction needs to be increased.

2. With the steering levers held back, move the FSC lever back from the forward position. With a proper amount of friction adjusted, the FSC lever should move back with a slight amount of resistance (friction). If the FSC lever movement is "stiff", the friction needs to be decreased.

3. The FSC friction is increased or decreased by tightening or loosening the friction adjustment nut. Loosen or tighten the nut and check the control function until the conditions of both steps 1 and 2 are met.

PTO Belt Tension

PTO belt tension can be adjusted by lengthening or shortening the position of the adjustment bolt on the idler adjuster (above idler pulley). Optimum adjustment will result in a 1/2 in. (1.27 cm) deflection of the belt.

1/2 in. (1.27 cm)

deflection

Deck Support

Arm (Ref)

Loosen Screws

FSC Switch Adjustment

(Side View Through Chassis)

PTO Belt Tension Adjustment

Maintenance Instructions

ADJUSTMENTS/

ELECTRICAL SYSTEM

PTO Clutch

WARNING

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

The declutched or disengaged position of the PTO clutch is adjustable and is set to completely release spring tension on the mechanical clutch. The spring in the linkage that engages the clutch shou ld not have any tension on it when the clutch is disengaged. Adjust the PTO clutch engagement adjustment bolt up or down to allow minimal free movement in the disengaged position. If this can not be achieved, the clutch rod will need to be adjusted.

Spring Hangs

Freely When

Disengaged

NOTE: When making any of the PTO clutch adjustments, it is important that the overall length from the top of the clutch engagement spring to the lower mounting of the clutch actuator link be 5-1/4 in. (13.3 cm) when engaged.

Clutch Rod

The clutch rod and ball joints are factory adjuste d to 10-1/4 in. (26.0 cm) overall length. Increasing the length will increase the free movement of the spring on the clutch engagement arm. Decreasing the length will increase the amount of spring stretch in the engaged position. (Refer to PTO Clutch Adjust- ment - Engaged illustration.)

PTO Clutch

Lever

(Disengaged)

Adjustment Bolt

and Jam Nut

PTO Clutch Adjustment - Disengaged

PTO Clutch

Lever

(Engaged)

5-1/4 in.

(13.3 cm)

10-1/4 in. (26.0 cm)

Clutch Rod Adjustment

ELECTRICAL SYSTEM For troubleshooting, refer to the WIRING SCHE-

MATIC. IMPORTANT: Disconnect both battery cables be-

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

PTO Clutch Adjustment - Engaged

TRACTOR AND DECK DECALS

I T E M PA R T D E S C R I P T I O N L O C A T I O N N O . NO. NO. REQ’D SD

Walker Product and Operation Decals

1 2802-2 RH Fender Body, RH near Seat 1 2 2010-4 Fuel Transfer Transfer Mount 1 3 5800-6 Decal, Walker 6-3/4" Rear Body (one on each side) 2 4 2802-1 LH Fender Body, LH near Seat 1 5 9804 Axle Lockout Chassis 2 6 5856 Made in USA Body 1 7 5803 Walker Manufacturing Logo Body 1 8 2748 Cutting Height Adjustment Carrier Frame 1 9 5800-5 Decal, Walker 8" Deck Footrest, Front 1

Danger Decals Warning Decals Caution Decals

10 5805 Caution, Engine Exhaust Rear Body 1

11 6810 Danger, Engine Exhaust Engine, LH Side 1 12 2107-4 Decal, Belt Routing Rear Body, Underside 1 13 4107-1 Danger, Rotating Components Air Cleaner Bracket 1 14 5808 Danger, Rotating Blades Deck Housing (one on each end) 2 15 8647 Danger, Tilt-Up Carrier Frame 1 16 8653-1 Transport Warning Deck Housing 1 17 8653 Caution, Pivot Joint Carrier Frame 2 18 2749 Decal, Drive Belt Routing Deck Housing 1 19 5848 Danger, Side Discharge Shield Side Discharge Shield 1

Maintenance Decals

20 2105-8 RH Decal, 27 HP Rear Body, RH Side 1 21 2105-9 LH Decal, 27 HP Rear Body, LH Side 1 22 5855 Important, Engine Cooling Engine 1 23 2807-1 Decal, Oil Pressure/Head Temp. Body 1 24 6875 PTO Alignment Arrow Universal Joint Tube Assembly 1 25 8746 Universal Joint Lube Mount Bracket / PTO Guard 1 26 2732 Decal (60") Deck Housing, Front 1

Option Decals (applied only to units with corresponding Options installed)

27 5877 Lights, On-Off Body 1 NOTE: All parts requiring decals are shipped with decals applied.

Use only genuine Walker® replacement parts. Effective Date 03-31-08

TRACTOR AND DECK DECALS

D R I V

E BE

A L KE

R P /

N 27 3 1

CAR

L ISLE

P/N

R 3 VX

1 2 50

BE L T

T WI S T

DRI

V E P UL

L EY

W A L

KER P /

N 224

BEL

T T WI

S T

2 7

4 9

BL A

D E PU

L EY

A L KE

R P/N

224 0

DRIVE BELT WALKER P/N 2731 CARLISLE P/N R3VX1250-2

BELT ROUTING

BELT TWIST

DRIVE PULLEY WALKER P/N 2240-1

BELT TWIST

BLADE PULLEY WALKER P/N 2240

2749

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

BODY / CHASSIS ASSEMBLY

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Body & Seat Assembly

1 2103-1 Seat 1 2 2105-1 Rear Body (Includes Item # 3) 1 3 2190-1 Insulation Foam Pad 1 4 5845 Rubber Bumper (1.50 x 1.25) 2 5 5146 10mm Ball Stud 2 6 2145 Gas Spring 1 7 5180 Edge Molding, Lever Opening 2 8 2100-3 Front Body Doubler 1 9 2504-4 Hinge (22.5) 1

10 2100-1 Front Body 1

11 5989-5 Dome Plug (7/16) 1 12 2383 Body Latch Hook 1 13 7854 Plastic Tip, Red 1 14 7222 Extension Spring (1/4 x 3) 1 15 5989-4 Dome Plug (3/8) 2 16 5989-3 Dome Plug (5/16) 2

Chassis Assembly

17 2390-1 Battery Pan 1 18 2046-1 Gas Tank Mount, LH 1 19 2300-3 Chassis Frame 1 20 2046 Gas Tank Mount 1

Tail Wheel Assembly

21 5830 Grease Fitting 4 22 2201-2 Fiberglide Thrust Washer 2 23 2201-3 Fiberglide Bearing (1-5/8) 2 24 2300-6 Tail Wheel Pivot (Includes Items # 21 & 25)1 25 5830-3 Grease Fitting (45 Deg.) 1 26 2201-4 Washer (2-1/4 x 7/16 x 1/4 Thk) 1 27 8769-8 Dust Cap, Deck Caster 2 28 8769-6 Bearing Cone (1" ID) 4 29 8769-5 Bearing Cup (2 x 1-5/8) 4 30 8769-7 Seal 2 31 2770 Caster Wheel Fork 2 32 8039 Nut, Tail Wheel Axle 2 33 8038-1 Spacer, Tail Wheel Axle 2

(.750 x ID x 1.125 OD) 34 8768-2 Seal, Reverse Lip 2 35 8037 Bearing Cone (3/4 ID) 4 36 8035 Tail Wheel & Tire (13 x 5.00-6) 2

(W/Bearing Race) 37 8037-1 Seal, Outer (1-3/4 x 1-1/8) 2 38 7038 Tail Wheel Axle (3/4 x 5-9/16) 2

Deck Support Arm & Hitch Assemblies

39 2300-9 Deck Arm Support Mount 1 40 6840-1 Support Arm Bushing (2-1/16) 2 41 2775 Lynch Pin (5/16 x 1-1/4) 2 42 2431 Deck Support Arm, LH 1

(Includes Item # 21) 43 2430 Deck Support Arm, RH 1

(Includes Item # 21)

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Deck Arm Adapter Kit

44 2431-1 Deck Arm Adapter, LH 1 45 5775-2 Hitch Pin (#6) 2 46 2430-1 Deck Arm Adapter, RH 1 47 2744-2 Counter Weight Spring Extension 1 48 2744-4 1/4" Quick Link 1 49 2744-5 Chain 1

Tilt-Up Latch Assembly

50 5847 Plastic Tip 1 51 5744-20 Spring Arm, Tilt-Up Latch 1 52 5744-10 Spring Pivot Bushing 1 53 5744-15 Compression Spring (3/8 x 5/8) 1 54 5744-13 Mount Angle, LH 1 55 5744-12 Hook, Tilt-Up Latch 1 56 5744-14 Mount Angle, RH 1

Fasteners

F002 10-24 Keps Nut 5 F004 1/4-20 Keps Nut 11 F005 1/4-20 ESNA Nut 2 F009 5/16-18 Whiz Locknut 16 F013 3/8-16 Whiz Locknut 2 F020 5/16-18 ESNA Nut 1 F025 10-24 x 3/8 PPHMS 5 F029 1/4-20 x 1/2 Hex Bolt 2 F034 5/16-18 x 3/4 Hex Bolt 8 F093 5/16-18 x 1 Hex Bolt 1 F151 3/8-16 x 7/8 Hex Bolt 2 F183 .312 x .700 x .074 Washer 4 F205 5/16-18 x 1/4 Set Screw (Knurl Point) 2 F218 7/16 Split Lock Washer 5 F219 7/16-14 x 1-1/4 Hex Bolt 5 F236 1/4-20 x 1-3/4 Hex Bolt 2 F246 1/4-20 x 1/2 PTHMS 4 F256 7/16 SAE Washer 1 F341 Coil Roll Pin (7/64 x 9/16) 1 F342 5/16 Conical Washer 2 F344 3/4-16 Slotted Hex Nut 2 F347 3/4 SAE Washer 2 F348 1/8 x 1-1/2 Cotter Pin 2 F430 7/16-20 ESNA Nut 2 F442 1/4-20 x 5/8 PTHMS 5 F446 7/16-20 x 3-1/2 Grd 8 Bolt 2

* Complete Deck Arm Adapter Kit available by ordering

kit 2430-10. This kit allows the use of all Side Discharge Decks with the MBSSD Tractor.

** Complete Tilt-Up Latch Assembly Kit available by ordering

kit # 5747.

Use only genuine Walker® replacement parts. Effective Date 03-31-08

BODY / CHASSIS ASSEMBLY

F020

F004

F029

F342

F341

F029

52 53

F236

F093

F004

F034

F442

F246

F005

F009

F004

F005

F002

F025

F013

F151

F219

F218

F205

F219

F256

F236

F183

F009

F218

F344 F348

F347

28 29

29 28

F218

F219

F034

F446

F009

F430

F009

F430

F034

F446

F034

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

MAIN COMPONENT POWER TRANSMISSION

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

PTO Drive Assembly

1 4850 Handle Grip 1 2 2358 Clutch Lever (Includes Item # 1) 1 3 5830-4 Grease Fitting (90 Deg.) 1 4 5214-2 Ball Joint (5/16-24) (Nylon Lined) 2 5 4358-1 Clutch Rod 1 6 5229 Extension Spring (1/2 x 2-1/4) 1 7 2358-5 Clutch Actuator 1 8 5103-2 Pivot Bushing (5/16 ID) 2 9 2358-6 5/16-18 x 1-3/4 Stud 2

10 2349-2 Bearing Mount Plate 1

11 2349-3 Switch Pivot Mount 1 12 7407 Clevis Pin (3/16 x 1/2) 2 13 2358-4 Clutch Actuator Link 2 14 4358-5 Clutch Linkage Spring 1 15 2236 PTO Pulley 1

(Includes Items # F075, F114 & F435) 16 5268 Bearing W/Collar (3/4) 2 17 2274-6 PTO Drive Shaft (1") 1

2274-5 PTO Drive Shaft Assembly

18 7275-9 Quick Coupler Installation Tool ** 19 7275-16 Universal Joint Tube Assembly / Spline 1 20 2274-7 PTO Bearing Housing 1 21 4325-3 Clutch Stop 1 22 2325-1 Clutch Retainer 1 23 2325-4 Idler Adjustment 1 24 2265 Bearing (20mm) 4 25 2406-7 Pivot Shaft Spacer 1 26 2236-1 Idler Pulley (4.5/AAA) 2 27 7201-7 Inner Race (2-5/8) 1 28 7201-3 DU Bearing 2 29 2230 Engine PTO Belt/Set (3) 1 30 2236-4 Idler Pulley Shaft 1 31 2325-3 Idler Adjuster 1 32 2325-2 Tensioner Bolt 1 33 5830-3 Grease Fitting (45 Deg.) 1 34 2325 Idler Arm (Includes Item # 33) 1 35 5841 Retainer Washer (3/8 x 1-1/4) 1 36 2410 Mechanical Clutch 1

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Fasteners

F004 1/4-20 Keps Nut 5 F008 5/16-24 Keps Nut 2 F009 5/16-18 Whiz Locknut 12 F012 3/8-16 Keps Nut 1 F013 3/8-16 Whiz Locknut 3 F020 5/16-18 ESNA Nut 1 F024 5/16-24 Jam Nut 2 F029 1/4-20 x 1/2 Hex Bolt 1 F031 1/4-20 x 5/8 Hex Bolt 5 F034 5/16-18 x 3/4 Hex Bolt 5 F046 3/8-16 x 3-1/2 Hex Bolt 1 F091 5/16-18 x 5/8 Hex Bolt 1 F093 5/16-18 x 1 Hex Bolt 4 F114 5/16-18 x 5/8 SQH Set Screw 1 F127 1/16 x 1/2 Cotter Pin 2 F163 5/16-18 x 3/4 SQH Set Screw 1 F168 5/16 Split Lock Washer 1 F170 5/16 x 1 x 7/64 Flat Washer (Zinc Plate) 1 F178 1/4 x 1 Fender Washer 1 F185 1/4 Int. Star Lock Washer/SS 1 F241 .375 x .875 x .10 Washer 2 F336 3/8-16 Jam Nut 1 F388 3/8-16 x 2-1/2 Hex Bolt 1 F435 1/4 x 1/4 x 1-1/4 Key 1

* Service Part Only ** The Quick Coupler Installation Tool is used to assist the

installation of the Quick Coupler Tube and PTO Shaft connection by holding the disconnect ring in the retracted position when joined to the tractor spline shaft on the PTO Drive Shaft.

Use only genuine Walker® replacement parts. Effective Date 03-31-08

MAIN COMPONENT POWER TRANSMISSION

F388

F241

F008

F024

F009

F024

F029

F185

F034

F013

F034

F031

F004

F009

Refer to Body / Chassis Assembly

F031

F009

F127

F012

F336

F013

F241

F046

F034

F009

F004

F008

F020

F178

Refer to Hydrostatic Ground Drive Assemblies

Refer to Engine Group

F091

F168

F170

F009

F093

F009

F163

F114

F435

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

ENGINE GROUP

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Fuel Tank Assembly

1 8046-9 Fuel Tank, 5.0 Gallon, Gas 2

(Includes Item # 3)

2 5082-2 Fuel Cap Seal 2 3 5082 Fuel Tank Cap 2

(Includes Item # 2)

4 5083-5 Tank Tube Elbow 2 5 5083-1 Bushing, Rubber (Fits 5083) 2 6 5086-7 Hose (3/8 x 6) 2 7 5020-2 Fuel Filter, In Tank 2 8 5879-3 Hose Clamp (1/2) 7 9 5086-10 Hose (1/4 x 9) 1

10 2010-3 Fuel Valve 1

11 2010-2 Fuel Transfer Mount 1 12 NS Kohler Hose 13 5020 Fuel Filter 1 14 5086-11 Hose (1/4 x 12) 1 15 5086-12 Hose (1/4 x 46) 1 16 7833-2 Cable Clamp (1 x 1/4) 2

Engine Assembly

17 NS 27 HP Engine (Kohler) 18 NS Muffler * 19 2104 Body Support 1 20 4845 Rubber Bumper (1.0 x .625) 2 21 NS Kohler Nut 22 2013-4 Shield Side 2 23 2013-3 Muffler Heat Shield 1

Precleaner Assembly

24 7840 Hose Clamp (1-5/16 to 2-1/4) 2 25 2012 Flex Hose (1-3/4 x 2) 1 26 2088-10 Air Cleaner Assembly

(Includes Items # 27-32) 27 5091-11 Air Flow Indicator & Nipple 1 28 2088-1 Air Cleaner Band 1 29 2090-3 Safety Filter Insert 1 30 2090-1 Air Cleaner Cartridge 1 31 2088-2 Air Cleaner Cap 1 32 2090-2 Vacuator Valve 1 33 2010 Pre Cleaner / Guard Mount 1

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Choke and Throttle Assemblies

34 2109-4 Control Cable (65-1/4") 1 35 2108-4 Control Cable (71") 1 36 8123 Insulating Sleeve (3/8 x 6) 1 37 5975-3 Cable Tie (50# x 7") 2 38 5108-6 Choke Control Knob, Black 1 39 5108-5 Throttle Control Knob, Red 1 40 5108-1 Control Lever, Throttle / Choke 2 41 7108 Control Assembly 2

(Includes Items # 40, 42-44 & F201)

2108-3 Throttle Control and Cable Assembly

(Includes Items # 39, 40, 42-45, F002, F005, F050, F164 & F201)

2109-3 Choke Control and Cable Assembly

(Includes Items # 38, 40, 42-45, F002,

F005, F050, F164 & F201) 42 5108-8 Control Bracket 2 43 5108-10 Friction Washer (.125) 2 44 5108-7 Control Lock Tab 2 45 5172 Bearing, Nylon (.255 ID x .379 OD x .250) 1

Fasteners

F002 10-24 Keps Nut 12 F004 1/4-20 Keps Nut 2 F005 1/4-20 ESNA Nut 2 F009 5/16-18 Whiz Locknut 8 F025 10-24 x 3/8 PPHMS 8 F026 10-24 x 1/2 PPHMS 2 F031 1/4-20 x 5/8 Hex Bolt 2 F034 5/16-18 x 3/4 Hex Bolt 6 F050 1/4 SAE Washer 3 F164 10-24 x 1/4 x 3/8 SHL Bolt 1 F175 1/2 Split Lock Washer 4 F184 1/4-20 x 1/2 Hex Bolt, SS 4 F185 1/4 Internal Star Lock Washer 4 F201 1/4 Belleville Spring Washer 4 F439 1/2-13 x 1-3/4 Hex Bolt 4

* Service Part Only

Use only genuine Walker® replacement parts. Effective Date 03-31-08

F184

F185

ENGINE GROUP

4 3 2

F009

F002

F185

F184

F009

F034

F009

F034

F031

F184

F034

F050

F164

F005

F201

F025

22 23

F025

F002

To Engine

F185

F184

F002

Refer to Body / Chassis Assembly

F050

F002

F025

F026

F002

F004

F026

F002

F175

F439

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

HYDROSTATIC GROUND DRIVE ASSEMBLIES

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Parking Brake Assembly

1 2358-6 5/16-18 x 1-3/4 Stud 2 2 2300-2 Parking Brake Hydro Mount, RH 1 3 5103-2 Pivot Bushing (5/16 ID) 2 4 2406-3 Parking Brake Actuator Tube 1 5 5222 Extension Spring (1/2 x 3-1/4) 1 6 2280 Clevis (3/8) 1 7 2406-4 Clevis Pin (5/16 x 1-1/8) 1 8 4407-4 Bow Tie Cotter Pin 5 9 2406-1 Brake Actuator Pull 1

10 8655-4 Clevis Pin (5/16 x 3/4) 1

11 5830-4 Grease Fitting (90 Deg.) 1 12 2850 Handle Grip, Red 1 13 2406-8 Parking Brake Lever Idler Mount 1

(Includes Items # 11 & 12) 14 2406-5 Parking Brake Stop 1 15 2300-1 Parking Brake Hydro Mount, LH 1 16 5281-5 Clevis Pin (1/4 x 0.80) 2 17 5280 Clevis (1/4) 2 18 2406-2 Parking Brake Rod 2 19 5665-1 Compression Spring (2-1/2) 2 20 5463 Steering Lever Actuator 2

Ground Drive Assemblies

21 2248 Ground Drive Belt 1 22 2028-4 Hydro Lockout Rod, RH 1 23 2240-2 Drive Pulley (Includes Item # F171) 1 24 5267 Retainer Collar (3/4) 2 25 4349-6 Flanged Bearing (1") 2 26 2350-13 3/18-16 x 1-3/4 Bolt Grade 5 8 27 2350-1 Hub, Coupler End 4 28 6325-2 Spacer Bushing (5/16) 16 29 2350-9 Flex Plate 8 30 2350-12 Coupling Shaft 1 31 5221 Extension Spring (3/4 x 4) 1 32 4245 Idler Pulley (3/A) 1 33 5841 Retainer Washer (3/8 x 1-1/4) 1 34 2349-1 Hydro Idler Arm 1

(Includes Item # 35) 35 5830-3 Grease Fitting (45 Deg.) 1 36 7201-5 Inner Race (2-1/4) 1 37 7201-3 DU Bearing 2 38 2028-3 Hydro Lockout Rod, LH 1 39 NS Hydro-Gear W/Charge Pump, LH 1

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

40 2024-5 Oil Expansion Reservoir 2 41 2024-7 Oil Reservoir Mount, LH 1 42 2024-6 90' Degree Fitting 2 43 5879-3 Hose Clamp (1/2) 2 44 2024-3 Reservoir Hose 2 45 5879-6 Hose Clamp (3/4) 2 46 9430-1 Spacer Tube (9/16 x 5/8 x 5/16) 4 47 2024-8 Oil Reservoir Mount, RH 1 48 2300-5 Spring Mount Plate 1 49 NS Hydro-Gear W/Charge Pump, RH 1

Wheel Assembly

50 2070 Wheel & Tire (22 x 10.50-12) 2

Fasteners

F003 1/4-28 Hex Nut 2 F004 1/4-20 Keps Nut 12 F009 5/16-18 Whiz Locknut 17 F010 5/16-24 ESNA Nut 4 F012 3/8-16 Keps Nut 1 F013 3/8-16 Whiz Locknut 4 F014 3/8-16 ESNA Nut 8 F015 1/2-20 Wheel Lug Nut 8 F031 1/4-20 x 5/8 Hex Bolt 8 F034 5/16-18 x 3/4 Hex Bolt 4 F035 5/16-18 x 1-1/4 Hex Bolt 1 F040 3/8-16 x 1-1/2 Hex Bolt 1 F043 3/8-16 x 3 Hex Bolt 1 F051 3/8 SAE Washer 1 F054 AN960616 Washer 10 F169 5/16-18 x 1 Carriage Bolt 2 F171 5/16-18 x 3/8 Set Screw 6 F173 5/16-18 x 3/4 Carriage Bolt 2 F182 1/4 x 5/8 x 1/8 Washer 4 F183 .312 x .700 x .074 Washer 1 F211 1/4-20 x 7/8 Hex Bolt 1 F231 1/4 x 3/4 Woodruff Key (#806) 1 F336 3/8-16 Jam Nut 1 F388 3/8-16 x 2-1/2 Hex Bolt 4 F434 5/16-18 x 3-1/2 Hex Bolt 4

Use only genuine Walker® replacement parts. Effective Date 03-31-08

HYDROSTATIC GROUND DRIVE ASSEMBLIES

F336

F009

F034

F009

F003

F010

19 20

F010

F031

F004

F031

F009

F004

F031

F009

F003

F010

F182

F004

F031

42 43

F010

F013

F183

F009

F034

F182

F388

F009

F171

F169

F013

Refer to Main Component Power Transmission

F231

F388

F034

Refer to Main Component Power Transmission

F182

F013

F040

F035

F173

F051

F009

Refer to Engine Group

F009

F004

F171

F054

F211

F043

F012

F171

F014

F054

F171

F014

F054

F171

F054

Refer to Body / Chassis

F009

F004

F434

Assembly

F015

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

STEERING CONTROL ASSEMBLIES

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Steering Lever & FSC Assemblies

1 5862 FSC Knob 1 2 4170 FSC Lever Assembly

(Includes Item # 4)

3 2170-1 Step Washer 1 4 5830 Grease Fitting 1 5 5214-5 Ball Joint (5/16-24/LH) W/O Stud 1 6 4213 Hydro-Gear Control Rod 1 7 5214-4 Ball Joint (5/16-24) W/O Stud 1 8 5214-3 Ball Joint (5/16-24 LH) (Nylon Lined) 2 9 4173 FSC Rod 2

10 2212 Transmission Control Arm Stop 2

11 2212-2 Transmission Control Arm, RH 1 12 2025-10 TWHCS 5/16-24 x 1.0 (Patch) 2 13 5214-2 Ball Joint (5/16-24) (Nylon Lined) 2 14 2212-1 Transmission Control Arm, LH 1 15 2451-1 Steering Pivot Shaft With Stop 1 16 5830-3 Grease Fitting (45 Degree) 1 17 8201-3 Fiberglide Bearing 4 18 2451-3 Speed Control Actuator, LH 1

(Includes Items # 16 & 17) 19 5146 10mm Ball Stud 4 20 2215-1 Steering Lever Dampener 2 21 2451-2 Speed Control Actuator, RH 1

(Includes Items # 17 & 22) 22 5830-4 Grease Fitting (90 Deg.) 1 23 4451-4 FSC Friction Actuator 1 24 4219 Extension Spring (3/4 x 6-1/2) 1 25 5850-2 Handle Grip, Foam (5-1/2) 2 26 5453-20 Steering Lever Handle (+1") 2

Adjustable / SS

(Includes Items # 25, F188, F198 & F345) 27 4452-4 Steering Lever Tube W/Tab 2 28 5450 D-Clip 2 29 5222 Extension Spring (1/2 x 3-1/4) 2 30 4452-6 Steering Pivot (1/4-20 x 1-1/2) 2 31 4142-1 FSC Cam 1 32 5141 FSC Friction Washer 1

(1-1/2 x 3/8 x 1/16) 33 4142-2 FSC Friction Washer 1

(1-1/2 x 1-1/32 x 1/16) 34 9704-3 Pivot Rod Bushing, Plastic 2 35 2451-4 Steering Shaft Spacer 1

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Transmission Spring Assemblies

36 4199 Transmission Spring Assembly

(Includes Items # 37-43, F004, F032,

F320 & F352) 37 4552 Ball Joint (1/4-28) 2 38 5194 Plunger Sleeve 2 39 5192-2 Spring Plunger (Female) 2 40 5193 Washer (3/4 x 1 x .085) 2 41 6191 Spring Slide (4-3/4) 2 42 5195 Compress Spring (1 x 5-1/8) 2 43 6196 Spring Slide Cap 2

Fasteners

F003 1/4-28 Hex Nut 2 F004 1/4-20 Keps Nut 6 F005 1/4-20 ESNA Nut 2 F008 5/16-24 Keps Nut 4 F009 5/16-18 Whiz Locknut 6 F024 5/16-24 Jam Nut 3 F032 1/4-20 x 3/4 Hex Bolt 2 F035 5/16-18 x 1-1/4 Hex Bolt 1 F059 3/8 Wave Spring Washer 1 F093 5/16-18 x 1 Hex Bolt 2 F121 5/16-18 x 3/8 x 1 SHL Bolt 1 F146 1/4-20 Jam Nut 2 F167 5/16-18 Hex Nut 1 F183 .312 x .700 x .074 Washer 2 F188 1/4-20 Self-Locking Nut 4 F192 3/8-24 Self-Locking Nut 1 F198 .250 x .625 x .040 Washer, SS 2 F209 .765 ID x 1.312 OD x .032 Washer 2 F211 1/4-20 x 7/8 Hex Bolt 1 F320 1/8 x 3/4 Split Spring Pin 2 F345 1/4-20 x .770 Knurled Bolt 4 F352 5/32 x 1 Heavy Duty Roll Pin 2 F373 5/16-24 Hex Nut/LH 3 F385 1/4 x 1-1/4 Roll Pin 1 F386 5/16-18 x 1-1/2 x 3/8 Shoulder Bolt 1 F391 1/4-20 x 1/2 Set Screw, SS 2 F407 Belleville Washer 3/8 x 1.187, SS 1 F427 5/16-18 Flange Nut 1

* Service Part Only

Use only genuine Walker® replacement parts. Effective Date 03-31-08

STEERING CONTROL ASSEMBLIES

F345

F008

Refer to Hydrostatic Ground Drive Assemblies

F146

F024

F008

F209

F391

F032

F003

F004

F352

Refer to Hydrostatic Ground

F008

F146

F391

F024

F320

Drive Assemblies

F009

F059

F386

F183

F008

F009

F093

F373

F004

F009

F032

F345

F009

F032

F373

F004

F427

F167

F385

F198

F188

F093

F035

F005

F373

F024

F183

F009

F188

F198

F005

F004

F192

F407

F004

F211

F121

Refer to Body / Chassis Assembly

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

ELECTRICAL ASSEMBLY

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Electrical Assembly

1 8960-15 Ignition Switch W/Keys 1

(Includes Items # 2, 3 & F349) 2 7854 Plastic Tip, Red 1 3 8960-3 Key Set W/Umbrella 1 4 7941-3 Boot, Circuit Breaker 1 5 7941-6 Circuit Breaker (15 Amp) 1 6 8990-1 Hourmeter (Sendec) 1 7 8996-2 Red Indicator Light Assembly 2

(Includes Items # 8 & 9) 8 8996-4 Red Indicator Lens 2 9 8996-3 Indicator Bulb

(Replacement for P/N 8996-2)

10 8536-2 Warning Horn Assembly 1

11 6105-3 Harness Clip 3

12 6942 Relay Switch 30/40 Amp (NC) 3

(Includes Items # 31 & 32)

13 7948-1 Time Delay Module (Less Harness) 1 14 7948-5 Time Delay Harness 1 15 7833-2 Cable Clamp (1 x 1/4) 2 16 2941-5 Safety Switch (NO) 1 17 7203-6 Riser Plate, Seat Switch 1 18 2940-3 Battery Cable (14") 2 19 7910 Battery (12V/340CCA/Dry) 1 20 5975-1 Cable Tie (18# x 3-3/4") 2

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

21 5932 Battery Terminal Insl., Blk (-) 1 22 5933 Battery Terminal Insl., Red (+) 1 23 5844 Battery Hold-Down Bar 1 24 2910-1 Battery Shield 1 25 5839 Hook Bolt 2 26 7938 Lead Wire, Battery Charge 1

(Alternator to Starter)

27 8941 Circuit Breaker (30 Amp) 1

(Auto Reset/Sealed) 28 5833 Cable Clamp (1/4) 1 29 2940-1 Wire Harness 1 30 5942-4 PTO Safety Switch (NO) 1 31 6941-6 Relay Switch 30/40AMP (NC) 32 6941-7 Relay Mount *

Fasteners

F002 10-24 Keps Nut 15 F004 1/4-20 Keps Nut 3 F019 1/4-20 ESNA Wing Nut 2 F025 10-24 x 3/8 PPHMS 3 F026 10-24 x 1/2 PPHMS 10 F031 1/4-20 x 5/8 Hex Bolt 3 F050 1/4 SAE Washer 4 F349 Washer .835 ID 1.122 OD, SS 1

* Service Part Only

Use only genuine Walker® replacement parts. Effective Date 03-31-08

ELECTRICAL ASSEMBLY

Refer to Body / Chassis

Assembly

F031

F004

F050

F019

F050

F004

F349

F026

002

31 32

END VIEWS ARE SHOWN FROM BACK OF PLUG

DETAIL A

PUR/RED

GRA

DETAIL F DETAIL G

PUR/RED PUR/RED BLU

DETAIL M

BLU

BLK/BRNBLK

BLU

DETAIL N

PUR/RED PUR/RED

BLK/BRNBLK

GRN BRN GRA

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

F002

F025

DETAIL H

YEL/GRN

WHT

PUR

F026

DETAIL B

PUR

PUR/RED

DETAIL O

YEL

GRN

BLU

F002

DETAIL C

BLK

DETAIL I

YEL/BRN

F002

F026

F025

F002

PUR PUR/RED

BRN

PUR/RED PUR/RED

F026

ORG

PUR PUR

DETAIL J

YEL/BRN

YEL

PUR/RED PUR/RED

DETAIL D

YEL

RED

BRN BRN

F004

WHT

BLK BLK

DETAIL E

PUR/RED PUR/RED

DETAIL K DETAIL L

ORG

BRN BRN

PUR/RED PUR/RED

F002

Refer to Body / Chassis Assembly

GRN GRN

PUR/RED

F031

F026

WHT

GRA

RED

PUR/RED PUR/RED

GRA

WHT WHT

Refer to Body / Chassis Assembly

GRN

BRN

BLK

60 INCH COMPLETE CARRIER FRAME ASSEMBLY (P/N 2911)

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Spring and Pivot Mount Components

1 2744-1 Spring Clip Bracket 1 2 5975-3 Cable Tie (50# x 7") 2 3 5743-1 Spring Cover 2 4 5743-6 Extension Spring (1-1/2 x 7-3/4) 2

(Includes Items # 2, F117 & F166) 5 5743-4 Eye Bolt (3/8-16 x 2-3/4) 2 6 2723 Counter Weight Spring Mount 2 7 2723-5 Locking Arm, LH (Includes Item # F432) 1 8 5830 Grease Fitting 10 9 2667-1 Pivot Mount, LH (Includes Item # 8) 1

10 2723-4 Pivot Shaft 2

11 2667-2 Pivot Mount, RH (Includes Item # 8) 1

12 2723-6 Locking Arm, RH (Includes Item # F432) 1

Carrier Frame Components

13 2215-2 Gas Spring Cover, RH 1 14 2723-2 Outer Height Adjustment Plate 1 15 7775-5 Lock Pin (5/16) 2 16 2720-3 Height Adjustment Spacer 4 17 2723-1 Inner Height Adjustment Plate 1 18 2215-3 Gas Spring Cover, LH 1 19 8740 Deck Pin Bushing (3/4 ID) 4 20 2911-2 60SD Carrier Frame 1 21 8811-25 Tilt Bar W/Grip (35") 1

(Includes Item # 22)

22 5850-5 Handle Grip (1 x 1 x 3-3/4) 1

Caster Wheel Components

23 8769-8 Dust Cap, Deck Caster 2 24 8769-6 Bearing Cone (1" ID) 4 25 8769-5 Bearing Cup (2 x 1-5/8) 4 26 8769-7 Seal 2 27 2770 Caster Wheel Fork 2 28 7038 Tail Wheel Axle (3/4 x 5-9/16) 2 29 8037-1 Seal, Outer (1-3/4 x 1-1/8) 2 30 8037 Bearing Cone (3/4 ID) 4 31 8035 Tail Wheel & Tire (13 x 5.00-6) 2

(W/Bearing Race)

32 8768-2 Seal, Reverse Lip 2 33 8038-1 Spacer, Tail Wheel Axle 2

(.750 x ID x 1.125 OD)

34 8039 Nut, Tail Wheel Axle 2

Deck Lift Components

35 2722-1 Deck Height Adjustment, LH 1

(Includes Item # 8)

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

36 2214-10 Rod End, Female (3/8-24) 4 37 2722-3 Pivot Shaft 2 38 2655 Lift Chain 4 39 4407-4 Bow Tie Cotter Pin 2 40 2215-4 Height Adjustment Rod 2 41 5146 10mm Ball Stud 4 42 2215 Gas Spring Assembly 2 43 2721 Lifting Arm (Includes Item # 8) 1 44 2721-2 Lifting Cross Tube 1 45 2723-3 Height Adjustment Arm 1

(Includes Item # 46) 46 5850-3 Handle Grip, Foam (3-1/4) 1 47 2722-2 Deck Height Adjustment Trigger 1

(Includes Item # 8)

Fasteners

F004 1/4-20 Keps Nut 6 F009 5/16-18 Whiz Locknut 12 F013 3/8-16 Whiz Locknut 14 F014 3/8-16 ESNA Nut 2 F035 5/16-18 x 1-1/4 Hex Bolt 2 F038 3/8-16 x 1 Hex Bolt 2 F039 3/8-16 x 1-1/4 Hex Bolt 2 F040 3/8-16 x 1-1/2 Hex Bolt 5 F048 1/2 SAE Washer 2 F050 1/4 SAE Washer 6 F071 3/4 External Snap Ring 2 F090 1/4-20 x 2-1/2 Hex Bolt 4 F117 Retainer Ring 2 F132 1/4-20 x 2-3/4 Hex Bolt 2 F166 Retainer Ring 2 F205 5/16-18 x 1/4 Set Screw (Knurl Point) 2 F215 3/8-16 x 1/2 x 1/2 S Bolt 2 F218 7/16 Split Lock Washer 4 F219 7/16-14 x 1-1/4 Hex Bolt 4 F226 5/16-18 x 7/8 Hex Bolt 4 F241 .375 x .875 x .10 Washer 18 F263 1-1/4 External Snap Ring 6 F268 5/16-18 x 3 Hex Bolt 1 F298 3/8-24 Jam Nut 4 F344 3/4-16 Slotted Hex Nut 2 F347 3/4 SAE Washer 2 F348 1/8 x 1-1/2 Cotter Pin 2 F378 3/8-16 x 6 Hex Bolt 1 F432 3/16 x 1/2 Split Spring Pin 2 F436 3/16 x 1-1/8 Spring Pin 4 F437 Clevis Pin (1/4 x 1) 2 F438 5/16-18 x 2-3/4 Hex Bolt 1

Use only genuine Walker® replacement parts. Effective Date 03-31-08

60 INCH COMPLETE CARRIER FRAME ASSEMBLY (P/N 2911)

F378

F038

F071

F241

F226

F241

F009

F298

F013

F205

F090

8 F004

F050

F241

F040

F298

F268

F218

F219

F132 F050

F071

F013

F219

F009

F347

F218

23 F344

F348

F050

F241

F013

F009

F438

F013

F263

F035

F436

F241

17 F009

F009

F013

F241

F039

F436

F013

F132

F050

F013

F241

F009

F090

F050

F004

F040

F241

F009

F090

F050

F226

F298

F040

F432

F009

F013

F048

F117

F014

F215

F263

F241

F215

F432

F038

F436

F298

F039

F241

F048

F263

F013

F166

F117

F014

F013

F241

F013

F241

F040

F241

F013

Refer to DSD60 Deck Assembly

F437

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

DSD60 DECK ASSEMBLY (P/N 2910)

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Deck Housing Components

1 2110 Hood Latch Assembly 2 2 2786-4 Locking Finger 2 3 2786-1 Footrest, DSD60 (Includes Items # 4 & 5) 1 4 2786-3 Rubber Mat (2 x 7) 2 5 2786-2 Rubber Mat (7 x 9-1/2) 2 6 4845 Rubber Bumper (1.0 x .625) 4 7 2703-5 Knob, 10-24 x 1/2 4 8 2724-1 Spindle Cover 2 9 2731-1 Belt Guide Roller 1

10 5162-11 Roller Wheel (5") (Includes Item # F059) 2

11 8490 Roller Wheel Axle Bolt 2 12 NS Deck Serial Number Plate 1 13 8735-10 Rubber Mat (5 x 6) 2 14 2910 60SD Deck Assembly / Tilt 1 15 2720-5 Deck Height Adjustment Clevis 2 16 6682-13 Axle Spacer 4 17 6715 Roller Wheel (3-7/8) 4 18 2725-5 Tensioner Mate 1 19 8910-5 Tie Down Strap 2 20 2705-4 End Backup Plate 2 21 2705-3 Center Backup Plate 1 22 2809-1 Rubber Shield 1 23 2705-6 Chute Frame / Outer 1 24 8670 Tilt-Up Hook 1

Blade Drive Components

25 2618-1 Cover, PTO Shaft Guard 1 26 2620-3 Rubber Flap 1 27 2620-2 Backing Plate 1 28 2619-1 PTO Shaft Guard 1

2618-2 PTO Shaft Guard Assembly

(Includes Items # 25-28, F002, F025 & F028) 29 5270 Bearing W/Collar (1") 2 30 2726 PTO Bearing Housing 1 31 2726-1 PTO Drive Shaft 1 32 2240-1 Drive Pulley 1

(Includes Items # F075 & F435) 33 2265 Bearing (20mm) 1 34 2245-4 Idler Pulley Shaft 1 35 2725-1 Tilted Idler Mount 1 36 8285-15 U-Joint Shaft Assembly, Spline 1

(Includes Item # F318) 37 4245-1 Idler Pulley (4/Flat) 1 38 2240 Blade Drive Pulley (3-1/2) 3 39 8245 Idler Pulley (6") 2 40 2350-5 Washer (3/8-16 Tap 1/4 Thk) 2 41 2731 Blade Drive Belt (R3VX1250) 1 42 5841 Retainer Washer (3/8 x 1-1/4) 1 43 2245-1 Idler Pulley 1

2245 Idler Pulley Assembly

(Includes Items # 33, 34, 43 & F445) 44 5830 Grease Fitting 1 45 7201-3 DU Bearing 2

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

46 7201-5 Inner Race (2-1/4) 1 47 2724-4 5/16 x 3/8 SHL Bolt 1 48 2350-4 Washer (1/2 OD x 5/16 ID x .030) 1 49 2725-3 Cam Tensioner 1 50 6235 Spring, Belt Tension Cam 1 51 2350-2 Idler Cam Spring Washer 1

(Includes Item # 52) 52 2350-3 Idler Cam Washer (2" OD) 1 53 2221 Extension Spring (1 x 4) 1 54 2724-3 Idler Arm (Includes Item # 44) 1

Blade Spindle Components

55 2052 Blade Spindle 3 56 7705-11 Blade 20.5" (RH Rotation) 3

Fasteners

F002 10-24 Keps Nut 12 F004 1/4-20 Keps Nut 8 F005 1/4-20 ESNA Nut 8 F009 5/16-18 Whiz Locknut 14 F012 3/8-16 Keps Nut 2 F013 3/8-16 Whiz Locknut 24 F014 3/8-16 ESNA Nut 2 F025 10-24 x 3/8 PPHMS 10 F028 10-24 x 3/4 PPHMS 2 F029 1/4-20 x 1/2 Hex Bolt 4 F031 1/4-20 x 5/8 Hex Bolt 4 F033 1/4-20 x 1 PTH Bolt 8 F034 5/16-18 x 3/4 Hex Bolt 6 F039 3/8-16 x 1-1/4 Hex Bolt 18 F041 3/8-16 x 1-3/4 Hex Bolt 3 F043 3/8-16 x 3 Hex Bolt 1 F045 3/16 x 3/16 x 3/4 Key 3 F048 1/2 SAE Washer 3 F049 5/16 SAE Washer 2 F050 1/4 SAE Washer 3 F051 3/8 SAE Washer 2 F055 5/8 SAE Washer 3 F059 3/8 Wave Spring Washer 4 F067 3/16 x 3/16 x 1 Key 1 F075 5/16-18 x 1/2 SQH Set Screw 2 F108 3/8-16 x 2 Hex Bolt 1 F131 5/16-18 x 1/2 Hex Bolt 2 F206 #2 x 3/16 Drive Pin 2 F236 1/4-20 x 1-3/4 Hex Bolt 1 F241 .375 x .875 x .10 Washer 2 F265 1/2-20 x 1-1/2 Hex Bolt 3 F268 5/16-18 x 3 Hex Bolt 4 F276 5/8-11 Jam Nut 3 F318 3/8-16 x 3/4 SQH Set Screw 1 F405 3/8-16 x 1-1/2 FHA Screw SS 2 F408 7/16-20 Jam Nut 2 F435 1/4 x 1/4 x 1-1/4 Key 1 F445 1-7/8 Internal Snap Ring 1

* Service Part Only

Use only genuine Walker® replacement parts. Effective Date 03-31-08

DSD60 DECK ASSEMBLY (P/N 2910)

F033

F268

F005

F039

F025

F009

F241

F013

F012

F029

F009 F131

F049

48 49

50 51 52

F043

F051

45 46 45

F276 F055

F045

F041

F025

F039

F059

F014

F059

F002

F009

F039

F031

F108

F004

F435

F051

F009

2 F004

F002

F241

F276 F055

F045

F075

F013

F004

F075

F041

F236 F050

F004

F009

F004

F031

F028

F025

F002

F034

F445

F034

F041

F051

F013

F059

F009

F002

F009

F013

F025

37 38

F025

F276 F055

F045

F067

F002

F050

F029

F002

F318

F059

F013

F206

F048

F265

F013

F048

F265

F405

F039

F013 56

F408

F039

F009

F048

F265

F013

F268

Secure to Vehicle According to 8653-1 Transport Warning Decal

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

MULCH KIT

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Mulch Kit

1 2691-4 Baffle, RH 1 2 2691-2 Vee, RH 1 3 2691-5 Center Skirt 1 4 2691-1 Vee, LH 1 5 2691-3 Skirt, LH 1

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

Fasteners

F004 1/4-20 Keps Nut 16 F029 1/4-20 x 1/2 Hex Bolt 16

Use only genuine Walker® replacement parts. Effective Date 03-31-08

Refer to DSD60 Deck Assembly

MULCH KIT

F004

F029

F004

F029

F004

F029

F004

F029

F004

F029

F004

F029

Effective Date 03-31-08 Use only genuine Walker® replacement parts.

WIRING SCHEMATIC

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

BATTERY

BLK

GRN

GRA GRA RED

WHT

LIGHTS

FSC

NEUTRAL

SWITCH

RED

PUR/RED

WHT BRN

GRN

WHT

OIL

PRESSURE

LIGHT

PTO

SWITCH

BLK

WHT

YEL

PUR/RED

PUR/ RED

BLK/ BRN

ORG

HORN

GRA

SEAT

SWITCH

BLK

RED

PUR PUR PUR

RED

BLUGRN

BLU

PUR/RED

GRN

YEL

BRN

TIME

DELAY

MODULE

BLK

85 86

87A

GRN

85 86

87A

PUR/RED

ORG

85 87

PUR/RED

BRN

OPTIONAL

LIGHTS

WHT

RELAY - A

PUR/YEL

RELAY - B

RELAY - C

87A

RED

BLK/ BRN

BRN

RED

BRN

OPTIONAL

INTERLOCK

ITEM PART DESCRIPTION NO. NO. NO. REQ’D

OVER TEMP

LIGHT

PUR/ RED

BLK

CIRCUIT

BREAKER

15 AMP

PUR/RED

PUR/ RED

BREAKER

PUR/RED

30 AMP

CIRCUIT

RED

OPTIONAL

LIGHTS

HOUR

METER

PUR/YEL

WHT

PUR

GRN

BLU

BLK

BLK RED

STARTER SOLENOID

BLU

WHT

PUR

REGULATOR

GRN

OIL PRESSURE

BLK

OIL TEMP SWITCH

BLK

CYLINDER HEAD

TEMP SWITCH

BLK

BLKBLK

WALKER MODEL MBSS

Beginning S/N 2007-90718

IGNITION SWITCH CIRCUITS

OFF

START

RUN

S1 = START CIRCUIT S2 = START/ACCESSORY CIRCUIT

M = MAGNETO GROUND CIRCUIT B = BATTERY CIRCUIT A = ACCESSORY CIRCUIT G = GROUND CIRCUIT

RELAY - A

TIME DELAY RELAY

OFF

START

RUN

PTO ON

RELAY - B

START RELAY

OFF

START

RUN

PTO ON

RELAY - C

IGNITION RELAY

OFF

START

RUN

PTO ON

STARTER

ENGINE

MAGNETO

SWITCH

G + M B + A / S1 + S2 B + A

30 + 87A

30 + 87 30 + 87

30 + 87A

30 + 87 30 + 87

30 + 87A

30 + 87 30 + 87

30 + 87A

Use only genuine Walker® replacement parts. Effective Date 03-31-08

LIMITED WARRANTY

FOR

WALKER MODEL MBSSD

RIDER MOWER

1. WHAT THIS WARRANTY COVERS, AND FOR HOW LONG:

Walker Manufacturing company will, at its option, repair or replace, without charge, any part covered by this warranty which is found to be defective in material and/or workmanship within one (1) year after date of sale to the original retail purchaser unless the product is used for rental purposes, in which case this warranty is limited to ninety (90) days. At Walker's request, customer will make the defective part available for inspection by Walker and/or return the defective part to Walker, transportation charges prepaid. All parts and components of the Walker Mower are covered by this warranty except the following components which are warranted separately by their respective manufacturers:

Kohler Engine Hydro-Gear Transaxles Battery Tires

The available warranties covering these items are furnished with each mower. Walker does not assume any warranty obligation, liability or modification for these items, which are covered exclusively by the stated warranty of the respective manufacturers noted above.

2. WHAT THIS WARRANTY DOES NOT COVER:

A. This warranty does not cover defects caused by depreciation or damage caused by normal wear, accidents, improper

maintenance, improper use or abuse of the product, alterations, or failure to follow the instructions contained in the Owner’s Manual for operation and maintenance.

B. The customer shall pay any charges for making service calls and/or for transporting the mower to and from the place

where the inspection and/or warranty work is performed.

3. HOW TO OBTAIN SERVICE UNDER THIS WARRANTY:

Warranty service can be arranged by contacting the dealer where you purchased the mower or by contacting Walker Manufacturing Company, 5925 East Harmony Road, Ft. Collins, CO 80528. Proof of the date of purchase may be required to verify warranty coverage.

4. WARRANTY LIMITATION:

A. THERE IS NO OTHER EXPRESS WARRANTY. ANY WARRANTY THAT MAY BE IMPLIED FROM THIS

PURCHASE INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS HEREBY LIMITED TO THE DURATION OF THIS WARRANTY AND TO THE EXTENT PERMITTED BY LAW ANY AND ALL IMPLIED WARRANTIES ARE EXCLUDED. Some states do not allow limitations on how long an implied warranty

lasts, so the above limitations may not apply to you.

B. WALKER WILL NOT BE LIABLE FOR ANY INCIDENTAL, CONSEQUENTIAL, OR SPECIAL DAMAGES AND/OR

EXPENSES IN CONNECTION WITH THE PURCHASE OR USE OF THE MOWER. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation(s) or exclusion(s) may not apply to you.

C. Only the warranty expressed in this limited warranty shall apply and no dealer, distributor, or individual is authorized

to amend, modify, or extend this warranty in any way. Accordingly, additional statements such as dealer advertising or presentations, whether oral or written, do not constitute warranties by Walker, and should not be relied upon.

D. This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Lwa

100

Sound - Model MBS

Sound Test

Sound test conducted was in accordance with 2000/14/EC and was performed on 6 July 07 under the conditions listed:

General Condition: Clear T emperature: 90 (F) Wind Speed: < 5 mph (< 8 kmh) Humidity: 20% Barometric Pressure: 83.8 kPA

32 (C)o

Vibration - Model MBS

Vibration Level

Vibration levels at the operators handles were measured in the vertical, lateral, and

0.2g

longitudinal directions using calibrated vibration test equipment.

Tests were performed on 6 July 07 under the conditions listed:

General Condition: Clear Temperature: 90 (F) Wind Speed: < 5 mph (< 8 kmh) Humidity: 20% Barometric Pressure: 83.8 kPA

32 (C)o

W ALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614

Walker MBSSD 27 HP User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Foreword

Table of Contents

General Information ________________ 1

Specifications _______________________ 3 Component Identification___________ 6 Safety Instructions __________________ 9

Assembly Instructions _____________ 15

Operating Instructions_____________ 22

Maintenance Instructions___________33

Illustrated Parts Manual

Warranty___________________________ 79

General Information

HIGHLIGHTED INFORMATION

GLOSSARY

IDENTIFYING NUMBER LOCATIONS

Fill In By Purchaser

Tractor Serial Number Location

Engine Serial Number Location

Mower Deck Serial Number Location

ENGINE SERIAL NUMBER LOCATION

SERVICING OF ENGINE AND DRIVETRAIN COMPONENTS

Specifications

ENGINE

ELECTRICAL SYSTEM

TRANSMISSION

BLADE DRIVE

TIRE SIZE

TIRE PRESSURE

MOWER DECK

CURB WEIGHT (Approximate)

DRIVE BELTS

SEAT

FRAME/BODY CONSTRUCTION

Component Identification

Front View and Right Side View

Rear View and Left Side View

Top View (Body Raised)

Safety Instructions

BEFORE OPERATING

OPERATING

MAINTENANCE

SAFETY, CONTROL, AND INSTRUCTION DECALS

SAFETY, CONTROL, AND INSTRUCTION DECALS

Assembly Instructions

SETUP INSTRUCTIONS

Battery Service

Wet Battery Service

Dry Battery Service

Battery Charging

Deck Caster Wheel Installation

Mower Deck Assembly

Deck Caster Wheels Installation

Deck Discharge Shield Installation

Deck Discharge Shield Installation

PTO Shaft Guard Installation

PTO Shaft Guard Installation

Mower Deck Installation on Tractor

Deck Installation

Retract Coupler Ring

Roller Wheel Installation

Quick Coupler Installation Tool

Mower Deck Installation (PTO Shaft Connection )

Coupler Ring “Locked” Position

Mower Deck Installation

Deck Counterweight Spring Installation

Deck Leveling

Deck Leveling

PREOPERATING CHECKLIST

Deck Secured in Tilt-Up Position

Operating Instructions

CONTROL IDENTIFICATION, LOCATION, AND FUNCTION

Ignition Switch

Ignition Switch

Operating Controls

Engine Choke

Engine Throttle

Forward Speed Control (FSC)

Steering Levers

Specifications _________________ 3 Component Identification_ 6 Safety Instructions ______________ 9