Walker MS Manuel utilisateur

OPERATOR’S MANUAL

Safety, Assembly, Operating, and Maintenance Instructions

Model MS

™

Please Read and Save These Instructions Beginning S/N: 117172

For Safety, Read All Safety and Operation Effective Date: 05-07-12

Instructions Prior to Operating Machine P/N 5000-23

Foreword

Thank you. . .for purchasing a Walker mower. Every effort has been made to provide you with the

most reliable mower on the market, and we are sure you will be among our many satised custom-

ers. If for any reason this product does not perform to your expectations, please contact 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 specic engine on the mower model you have purchased. Before

you operate your new mower, please read this entire manual. Some of the information is crucial for

proper operation and maintenance of this mower - it will help protect your investment and ensure

that the mower performs to your satisfaction. Some of the information is important to your safety,

and must be read and understood to help prevent possible injury to the operator or others. If any-

thing in this manual is confusing or hard to understand, please contact your local authorized dealer

or call our service department, at (970) 221-5614, for clarication before operating or servicing this

mower.

This manual covers Model MS with the Subaru Robin, EX40 (14 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.

Specications given are based on the latest information available at the time this manual was pro-

duced for a tractor with standard equipment. Optional equipment is available and may affect the

standard specications listed.

Walker Mfg. Co. is continually striving to improve the design and performance of its products. We

reserve the right to make changes in specications and design without thereby incurring any obliga-

tion relative to previously manufactured products.

Sincerely,

WALKER MANUFACTURING COMPANY

Bob Walker, President

Table of Contents

General Information ________________ 1

HIGHLIGHTED INFORMATION _____________ 1

GLOSSARY ____________________________ 1

IDENTIFYING NUMBER LOCATIONS ________ 1

ENGINE SERIAL NUMBER LOCATION _______ 2

SERVICING OF ENGINE AND

DRIVETRAIN COMPONENTS ______________ 2

Specications________________________ 3

ENGINE________________________________ 3

ELECTRICAL SYSTEM ___________________ 3

TRANSMISSION _________________________ 3

BLADE DRIVE __________________________ 4

TIRE SIZE ______________________________ 4

TIRE PRESSURE ________________________ 4

DIMENSIONS (Tractor and Mower) _________ 4

MOWER DECK __________________________ 5

DRIVE BELTS ___________________________ 5

GHS SYSTEM___________________________ 6

SEAT __________________________________ 6

FRAME/BODY CONSTRUCTION ___________ 6

Component Identication ___________ 7

Safety Instructions _________________ 10

BEFORE OPERATING ___________________ 10

OPERATING ___________________________ 12

MAINTENANCE ________________________ 14

SAFETY, CONTROL, AND

INSTRUCTION DECALS _________________ 15

Assembly Instructions______________ 17

SETUP INSTRUCTIONS__________________ 17

Tire Installation (Tractor) _______________ 17

Battery Service _______________________ 17

Wet Battery Service __________________ 17

Dry Battery Service___________________ 17

Battery Charging_____________________ 18

Battery Installation ___________________ 18

Mower Deck Assembly_________________ 18

Deck Caster Wheels Installation _________ 18

Deck Discharge Chute Installation _______ 19

Deck Discharge Deector

Shield Installation ____________________ 19

PTO Shaft Guard Installation ___________ 19

Tilt-Up Roller Wheel Installation _________ 19

Mower Deck Installation on Tractor_______ 20

Deck Installation _____________________ 20

Deck Leveling _______________________ 22

PREOPERATING CHECKLIST_____________ 23

Operating Instructions _____________ 25

CONTROL IDENTIFICATION,

LOCATION, AND FUNCTION _____________ 25

Ignition Switch _______________________ 25

Engine Choke ________________________ 25

Engine Throttle _______________________ 26

Forward Speed Control (FSC) ___________ 26

Steering Levers_______________________ 26

Blade Clutch (PTO)____________________ 26

Parking Brake ________________________ 26

Transmission Lockout Levers ___________ 27

Hourmeter ___________________________ 27

Light Switch (For Optional Lights) _______ 27

STARTING THE ENGINE _________________ 29

ADJUSTING GROUND

SPEED AND STEERING__________________ 29

ENGAGING THE BLADE DRIVE ___________ 31

STOPPING THE MACHINE _______________ 32

ADJUSTING CUTTING HEIGHT____________ 32

TRANSMISSION LOCKOUT ______________ 33

RECOMMENDATIONS FOR MOWING ______ 33

RECOMMENDATIONS FOR TILT-UP DECK

OPERATION/TRANSPORT _______________ 35

GRASS HANDLING SYSTEM (GHS) ________ 36

General Information ___________________ 37

Clogging Checklist____________________ 38

Using the Tilt-Up Deck _________________ 39

Using the GHS Catcher ________________ 39

Powerl ®__________________________ 39

“Full” Signal Horn ____________________ 39

Cleaning the GHS Exhaust Screen _______ 39

Dumping the Catcher __________________ 40

Tailgate Dumping ____________________ 40

Using the Dump Bag__________________ 40

Table of Contents

Maintenance Instructions __________ 42

MAINTENANCE SCHEDULE CHART _______ 42

IMPORTANT TIPS FOR CARE

OF THE SUBARU ENGINE________________ 43

Fuel System _________________________ 43

Starting _____________________________ 43

Cooling System ______________________ 43

Air Cleaner System____________________ 43

Oil__________________________________ 43

LUBRICATION _________________________ 44

Engine Oil ___________________________ 44

Engine Break-In Oil___________________ 44

Checking Engine Crankcase Oil Level ____ 44

Changing Engine Crankcase Oil_________ 45

Grease Fitting and Oil Point Lubrication __ 45

Mower Deck Gearbox Lubrication________ 48

Tractor PTO Gearbox Lubrication ________ 48

Gear Axle Lubrication _________________ 49

Hydrostatic Transmission Fluid _________ 49

Checking Hydrostatic

Transmission Fluid Level ______________ 49

CLEANING ____________________________ 50

Engine Air Cleaner System _____________ 50

Donaldson Radialseal™ Air Cleaner______ 50

Fuel Filter ___________________________ 52

Engine Cooling System ________________ 53

Cooling Air Intake System ______________ 53

Cylinder Head Cooling Fins ____________ 53

Grass Buildup in Mower Deck Housing ___ 54

GHS Blower__________________________ 55

GHS Exhaust Screen __________________ 55

Hydrostatic Transmission Cooling Fins ___ 56

CHECKING/SERVICING__________________ 56

Security of Air Filtration Components ____ 56

Battery______________________________ 56

Electrolyte Level _____________________ 56

Cleaning the Terminals ________________ 57

Charging the Battery__________________ 57

Tire Pressure_________________________ 57

Sharpen Mower Blades ________________ 57

Drive Belts___________________________ 59

Mower Deck Gearbox Oil Seals __________ 59

Spark Plug___________________________ 59

Breaker Points _______________________ 59

Fuel Lines and Clamps_________________ 59

Blade Brake Action____________________ 59

Safety Switch System__________________ 60

Forward Speed Control Friction Lock_____ 60

REPLACING/REPAIRING_________________ 61

Drive Belts___________________________ 61

Engine Belt _________________________ 62

PTO Drive Belt ______________________ 63

Ground Drive Belt ____________________ 64

Blade Overload Shear Bolts_____________ 65

PTO Shear Pin (If Equipped) ____________ 65

Mower Blades ________________________ 66

ADJUSTMENTS ________________________ 67

Steering Levers_______________________ 67

Tilt-Up Deck Adjustable Stop____________ 67

GHS Signal Horn Adjustment

(When Horn Sounds at Wrong Time)______ 67

Operator’s Notes _______________ 69

Warranty _____________________ 71

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 sev-

eral general practices to be aware of in the area of

safety. Most accidents associated with the opera-

tion or maintenance of a Walker Mower are caused

by disregarding basic safety precautions or specic

warnings. Such accidents, in most cases, can be

prevented by being aware of the dangers present.

Information of special importance has been high-

lighted in bold type in this manual. Refer to Safety

Instructions for the meanings of DANGER, WARN-

ING, CAUTION, IMPORTANT, and NOTE.

GLOSSARY

There are many terms that are either unique to this

equipment or that are used as acronyms. The fol-

lowing terms and their denitions will help while us-

ing this manual:

•DECK is the mowing attachment mounted on

the front of the tractor which includes the carrier

frame, deck housing, blade drive gearboxes,

and cutter blades.

•FORWARD SPEED CONTROL (FSC) controls

the maximum forward speed of the tractor;

functioning as a cruise control.

•GRASS HANDLING SYSTEM (GHS®)collects

mowed material and deposits it in the catcher.

•GRASS-PAK®SWITCH is mounted on the

grass delivery spout (in the catcher) and acti-

vates the “full” signal horn when the grass

catcher is full.

•GROUND DRIVE refers to the dual hydrostatic

transmissions which drive the main wheels.

•HYDROSTATIC TRANSMISSION transmits

and controls power from the ground drive belt to

the main drive wheel.

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

the tractor when the operator is seated facing

forward in the tractor seat.

•POWER TAKE-OFF (PTO) transmits engine

power to run the cutter blades and GHS blower.

•POWERFIL®spreads the mowed material

throughout the interior of the grass catcher by

an oscillating delivery spout.

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

of the tractor when the operator is seated facing

forward in the tractor seat.

•SIDE DISCHARGE (SD) discharges mowed

material from the right side of the mower deck.

•STEERING LEVERS steer the tractor by con-

trolling the dual hydrostatic transmissions.

•TRACTOR is the prime mover, including the en-

gine, drive train, operator seat, and controls to

operate the mower.

•TRANSMISSION LOCKOUT releases the hy-

drostatic transmissions to permit freewheeling

the tractor.

IDENTIFYING NUMBER LOCATIONS

The tractor serial number plate is afxed to the trac-

tor body just below the left rear corner of the seat.

The mower deck serial number plate is afxed

alongside the angle iron framing on the LH side of

the LH mower blade drive. Model and serial num-

bers are helpful when obtaining replacement parts

and maintenance assistance. For ready reference,

please record these numbers in the space provided.

Fill In By Purchaser

Tractor Model No. ______________________

Tractor Serial No. ______________________

Deck Serial No. ______________________

Engine Model No. ______________________

Engine Serial No. ______________________

Date of Purchase ______________________

General Information

Serial Number

Tractor Serial Number Location

Serial Number

Mower Deck Serial Number Location

ENGINE SERIAL NUMBER LOCATION

Refer to the engine manual that accompanies this

manual or the photo below for the location of the

engine serial number.

Serial Number

Engine Serial Number Location

(View From Right Side of Tractor)

SERVICING OF ENGINE AND DRIVETRAIN

COMPONENTS

The detailed servicing and repair of the engine,

hydrostatic transmission and gearboxes are not

covered in this manual. Only routine maintenance

and general service instructions are provided. For

the service of these components during the limited

warranty period, it is important to nd a local, au-

thorized servicing agent of the component manu-

facturer. Any unauthorized work done on these

components during the warranty period may void

the warranty. If you have any difculty nding an

authorized outlet or obtaining warranty service,

please contact our Service Department for assis-

tance:

Walker Manufacturing Company

5925 E. Harmony Road

Fort Collins, CO 80528

1-970-221-5614

www.walkermowers.com

Service manuals are available for each of these

components from their respective manufacturers as

follows:

Subaru Engine Subaru Robin America Inc.

A division of Fuji

Industries, Ltd. Group

905 Telser Rd.

Lake Zurich, IL 60047

800-277-6246

http://www.subarupower.com/

Hydrostatic Eaton Fluid Power Group

Transmissions Hydraulics Business USA

14615 Lone Oak Road

Eden Prairie, MN 55344 USA

952-937-9800

www.eaton.com/hydraulics

Gearboxes (Deck) Peerless Gear

1555 South Jackson St.

Salem, IN 47167 USA

866-536-8310

www.peerlessgear.com

Specications

MODEL MS

ENGINE

Manufacturer/Model Subaru Robin, EX40, 1 Cyl. (Air-Cooled)

Displacement cu. in. (cc) 24.65 (404)

Max. Power HP (kW) 14.0 (10.4) @ 3600 RPM

Governed RPM 3600

Max. Torque lb·ft (N·m) 19.9 (27.0) @ 2400 RPM

Idle RPM 1300

Spark Plug Type NGK BPR5ES

Spark Plug Gap in. (mm) .030 (0.75)

Crankcase Capacity qt (L) 1.35 (1.3)

Crankcase Lubricant API SC/SD/SE/SF/SG/SH Grade Oil Only with 10W-30/10W-40

Viscosity or 40W Above 68° F (20° C) Only

Fuel Tank Capacity gal (L) 1.9 (7.2)

Fuel Automotive Grade Unleaded Gasoline (87 Octane)

Cooling System Air Cooled

Air Cleaner Remote mounted Donaldson RadialsealTM

(Walker P/N 5090-1 Primary/5090-3 Safety Filter)

ELECTRICAL SYSTEM

Battery 12 Volt, 300 CCA (Interstate SP-35)

Charging System Flywheel Alternator

Charging Output 13 Amp DC (Regulated)

System Polarity Negative Ground

Ignition Transistorized Electronic Magneto

Starter 12 Volt Electric Key and Solenoid Operated

Interlock Switches Ignition Lockout by Seat Switch, Transmission Neutral and Blade

Clutch

Circuit Breaker Replaceable Fuse (20A)

TRANSMISSION

Manufacturer/Model Dual Hydrostatic, Eaton Model 7, Each Wheel Independently Driven

Steering Hand Lever Control / Individual Wheel

Forward Speed Control Precision Friction Lock Lever, Cruise Control, with Neutral-Park

Position

Service Brake Dynamic Braking through Hydrostatic Transmission

Parking Brake Mechanical Pin Lock in Transmission Gear

Neutral Transmission Release by Manual Dump Valve

Final Drive Gear Drive Axle

Specications

MODEL MS

TRANSMISSION (continued)

Transmission Fluid

Factory Service Mobil 1 Synthetic Motor Oil (15W-50)

Transmission Oil Capacity oz. (L) 19 (.56)

Transmission Cooling Cooling Fan Mounted on Drive Pulley

Ground Travel Speed

Forward MPH (km/h)

Reverse MPH (km/h)

0-5 (0-8) Innitely Variable

BLADE DRIVE

PTO Shaft Sliding Spline Shaft with Two (2) High-Speed U-Joints

Blade Spindle

Each Blade (2) Mounts Direct on Peerless Right Angle

Gearbox with Tee Gearbox in Center Connected to PTO Shaft

(Complete Geared Drive, Peerless Model 1000 Gearboxes)

Blade Drive Clutch and Brake Manual Belt Tightener Clutch and Scrubber Brake

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

Max. Blade Speed

[22 in. (56 cm) Blade] @ 3600

RPM Engine

2900 RPM

[16700 FPM (5090 m/min)]

TIRE SIZE

Deck Caster Wheel 8 x 3.00-4 Pneumatic (4-Ply)

Drive 18 x 6.50-8 (4-Ply)

Drive (Optional Wide Tire) 18 x 8.50-8 (4-Ply)

Rear 13 x 6.50-6 (4-Ply)

TIRE PRESSURE PSI (KPA)

Deck Caster Wheel 20 (137)

Drive 15 (103)

Rear 20 (137)

DIMENSIONS (Tractor and Mower)

Length in. (cm)

Tractor Only 64.5 (164)

Tractor Wheel Base 42.25 (107)

With 36 in. (91 cm) 87 (221)

With 42 in. (107 cm) 89 (226)

Specications

MODEL MS

DIMENSIONS (continued)

Width in. (cm)

Tractor Only

(Outside Standard Tire) 35 (89)

(Outside Optional Wide Tire) 37.75 (96)

With 36 in. (91 cm) 37 (94)

With 42 in. (107 cm) 43 (109)

Height in. (cm)

Tractor 44.5 (113)

Weight lb (kg)

Tractor Only 639 (290)

With DGHS36 715 (324)

With DGHS42 832 (377)

MOWER DECK

Width of Cut SD/GHS 36 or 42 in. (91 or 107 cm)

Cutting Height 1 to 4 in. (3 to 10 cm)

Height Adjustment 7 Positions - 1/2 in. (1 cm) Increment Hitch Pins Installed in

Multi-Position Deck Support

Blade Size

36 in. (91 cm) GHS Model 20 in. (51 cm) Two (2) Counter-Rotating Blades with a 4 in.

(10 cm) Center Overlap

42 in. (107 cm) GHS Model 22 in. (56 cm) Two (2) Counter-Rotating Blades with a 2 in.

(5 cm) Center Overlap

Deck Suspension Torsion-Flex Frame with Caster Wheels and

Counterweight Springs

DRIVE BELTS

Engine Walker P/N 5230-2

Ground Drive Walker P/N 5232

PTO Drive Walker P/N 5234-2

Specications

MODEL MS

GHS SYSTEM

Blower 10 in. Diameter, Three-Blade Paddle Wheel

Blower Brake Belt Scrubber Brake [Works in Combination with PTO Clutch, Stops

Blower within Five (5) Seconds of PTO Disengagement]

Max. Blower RPM 4000

Grass Catcher Capacity

gal / bu / L

63 / 6.7 / 238

Full Signal Oscillating Vane Switch Mounted on Grass Delivery Spout Triggers

Horn Signal

Powerl ®

Oscillating Delivery Spout Driven by 12 Volt Electric Gearmotor

Spreads Material throughout Interior of Catcher @ 25 Cycles/

Minute

SEAT Contour-Molded, with Nylon Backed Vinyl Cover and Integral

Foam Cushion

FRAME/BODY CONSTRUCTION

Frame All Welded Unitized Steel Chassis

Body 14 Gauge Steel

Deck 11 Gauge Steel

GHS Catcher and Chutes Molded Cross-Linked Polyethylene (UV Stabilized)

NOTE: The manufacturer reserves the right to make changes in specications shown herein at any time

without notice or obligation. The specications listed are for a standard conguration tractor, and may

change with the addition of optional equipment.

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