Walker H24d User manual

Please Read and Save These Instructions
For Safety, Read All Safety and Operation
Instructions Prior to Operating Machine
Beginning S/N: 175742
P/N 2000-40
Operator’s Manual
Safety, Assembly, Operating, and Maintenance Instructions

Foreword
Thank you. . .for purchasing a Walker mower. Every e󰀨ort 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 prop er operation and maintenance of this mower - it will help protect your investment and
ensure that the mower performs to your satisfaction. Some of the information is important to your
safety and must be read and understood to help prevent possible injury to the operator or others.
If anything in this manual is confusing or hard to understand, please contact your local authorized
dealer or call our service department, at [phone], for clarication before operating or
servicing this mower.
This manual covers Model H24d with the Kohler KDW1003 (23.7 HP) diesel 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
produced for a tractor with standard equipment. Optional equipment is available and may a󰀨ect
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
obligation relative to previously manufactured products.
Sincerely,
WALKER MANUFACTURING COMPANY
Bob Walker, Chairman

H24d 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 Compo-
nents.....................................................................2
Specications ......................................................3
Component Identication ...................................6
Safety Instructions 9
Before Operating .................................................9
Operating............................................................11
Maintenance.......................................................13
Safety, Control, and Instruction Decals...........14
Assembly Instructions 19
Setup Instructions.............................................19
Tire Installation (Tractor) ...........................................19
Battery Service..........................................................19
Battery Charging ...................................................20
Battery Installation.................................................20
Mower Deck Assembly..............................................20
Deck Caster Wheels Installation ...........................20
Deck Discharge Deector
Shield Installation (DS61)......................................21
PTO Shaft Guard Installation ................................21
Tilt-Up Roller Wheel Installation............................21
Mower Deck Installation on Tractor...........................21
Deck Installation....................................................21
Deck Leveling........................................................23
Measuring Deck Levelness ...........................23
Deck Leveling Procedure..............................24
Preoperating Checklist .....................................25
Operating Instructions 28
Control Identication,
Location, and Function ....................................28
Ignition Switch...........................................................28
Engine Throttle..........................................................29
Body Latch................................................................29
Forward Speed Control (FSC) ..................................29
Fuel Pump Priming ...................................................30
Steering Levers.........................................................30
Blade Clutch (PTO)...................................................30
Parking Brake ...........................................................31
Circuit Breakers ........................................................32
Glow Plug Activation Light ........................................32
Battery/Charge Malfunction Light..............................32
Oil Pressure Warning Light/Horn ..............................32
Water Temperature Warning Light/Horn ...................32
Transaxle Lockout Arms ...........................................33
Hourmeter.................................................................33
Roll-Over Protection System (ROPS).......................34
Suspension Seat.......................................................35
Starting the Engine............................................38
Adjusting Ground Speed and Steering ...........39
Engaging the Blade Drive.................................41
Stopping the Machine .......................................41
Fuel Tank Selector Valve...................................42
Adjustable Foot Rests.......................................43
Adjusting Cutting Height ..................................43
Transport Position.....................................................43
Transaxle Lockout.............................................44
Recommendations for Mowing ........................45
Recommendations for Towing .........................47
Recommendations for Tilt-Up Deck
Operation/Transport..........................................47

Table of Contents H24d
Maintenance Instructions 48
Maintenance Schedule Chart ...........................48
Important Tips for Care of the
Kohler Engine ....................................................49
Fuel System..............................................................49
Starting/Stopping ......................................................49
Cooling System.........................................................49
Air Cleaner System...................................................49
Oil..............................................................................49
Lubrication.........................................................50
Engine Oil .................................................................50
Engine Break-In Oil ...............................................50
Checking Engine Crankcase Oil Level..................50
Changing Engine Crankcase Oil/Oil Filter.............50
Mower Deck Spindle Lubrication ..............................52
DR52, DS61 or DR64 Mower
Deck Lubrication .......................................................52
Check Transaxle Fluid Level.....................................52
Transaxle Oil and Filter Change ...............................52
Grease Fitting and Oil Point Lubrication ..................53
Cleaning .............................................................56
Engine Air Cleaner System .......................................56
Donaldson Radialseal™ Air Cleaner.....................56
Engine Cooling System ............................................58
Radiator Screen and Cooling Fins ........................58
Flushing Radiator and Changing Coolant .............59
Grass Buildup in Mower Deck Housing ....................59
Transaxle Housing ....................................................61
Checking/Servicing ...........................................62
Engine Cooling System ............................................62
Coolant Level ........................................................62
Security of Air Cleaner System .................................62
Battery.......................................................................62
Cleaning the Terminals..........................................63
Charging the Battery .............................................63
Tire Pressure ............................................................63
Wheel Nut Torque .....................................................63
Sharpen Mower Blades.............................................63
Drive Belts.................................................................65
Fuel Lines and Clamps .............................................65
Radiator Hoses and Clamps.....................................65
Transmission Control Setting....................................65
Neutral-Park ..........................................................65
Straight Ground Tracking ......................................65
Blade Brake Action....................................................65
PTO U-Joints ...........................................................65
Safety Switch System ...............................................66
Forward Speed Control Friction Lock .......................66
Replacing/Repairing..........................................67
Drive Belts.................................................................67
Engine/PTO Belt....................................................68
Ground Drive Belt..................................................69
Deck Drive Belt......................................................70
Fuel Filter .................................................................71
Mower Blades ...........................................................71
Adjustments.......................................................73
Transmission Control ................................................73
Steering Lever Position Adjustment ......................73
Steering Handle Adjustment .................................73
Neutral Function Adjustment .................................74
Full Forward Speed Adjustment ............................75
Straight Tracking Adjustment ................................76
FSC Neutral Switch Adjustment ............................76
Forward Speed Control
Friction Adjustment ...............................................77
Blade Clutch (PTO)...................................................78
Clutch Engagement/Belt Tension ..........................78
Clutch Disengagement/Brake Action.....................79
Idler Pulley Maximum Travel Adjustment ..............79
Blade Brake Band Adjustment .............................80

H24d General Information
1
General Information
HIGHLIGHTED INFORMATION
Walker Manufacturing recommends that any ser-
vice 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
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 on page 9 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 denitions will help while
using this manual:
●DECK is the mowing attachment mounted on
the front of the tractor which includes the
carrier frame, deck housing, blade spindles,
and cutter blades.
●FORWARD 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.
●REAR DISCHARGE (RD) discharges mowed
material from the back of the mower deck.
●RIGHT HAND (RH) refers to the right-hand
side of the tractor when the operator is seated
facing forward in the tractor seat.
●ROLL-OVER PROTECTION SYSTEM
(ROPS) o󰀨ers enhanced operator protection in
the event of a roll-over type accident.
●SIDE DISCHARGE (SD) discharges mowed
material from the right side of the mower deck.
●STEERING LEVERS steer the tractor by
con trolling the two transaxles.
●TRACTOR is the prime mover, including the
en gine, drivetrain, 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 ARMS release the
transaxles to permit freewheeling the tractor.
IDENTIFYING NUMBER LOCATIONS
The tractor serial number plate is a󰀩xed to the
tractor body just below the left rear corner of the
seat. The mower deck serial number plate is
a󰀩xed alongside the spindle cover 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. ______________________
Engine Model No. ______________________
Engine Serial No. ______________________
Date of Purchase ______________________
Fill In By Purchaser

General Information H24d
2
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 photo below for the location of the
engine serial number.
Serial Number
Engine Serial Number Location
SERVICING OF ENGINE AND DRIVE-
TRAIN COMPONENTS
The detailed servicing and repair of the engine and
transaxles are not covered in this manual. Only
rou tine maintenance and general service instruc-
tions are provided. For the service of these com-
ponents during the limited warranty period, it is
important to nd a local, authorized servicing agent
of the com ponent manufacturer. Any unauthor-
ized work done on these components during the
warranty period may void the warranty. If you
have any di󰀩 culty nding an authorized outlet or
obtaining warranty service, please contact our
Service Depart ment for assistance:
Walker Manufacturing Company
5925 E. Harmony Road
Fort Collins, CO 80528
1-970-221-5614
www.walker.com
Service manuals are available for each of these
components from their respective manufacturers
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
877-728-7410
www.hydro-gear.com

H24d Specications
3
SPECIFICATIONS
ENGINE
Manufacturer/Model Kohler KDW1003, 3 Cyl., Diesel (Liquid-Cooled)
Displacement cu. in. (cc) 62.7 (1028)
Max. Power HP (kW) 23.7 (17.7) @ 3600 RPM
Governed RPM 3600
Max. Torque lb·ft (N·m) 36.8 (50.0) @ 2600 RPM
Idle RPM 1400
Crankcase Capacity qt (L) 2.5 (2.4)
Crankcase Lubricant API CF or Higher Grade Oil Only with 15W-40 Viscosity Above 5º F
(-15º C), 20W-60 Viscosity Above 104º F (40º C), or 5W-30 Viscos-
ity Below 32º F (0º C).
(See Kohler manual for additional oil recommendations.)
Oil Filter Kohler P/N 2175-283-S
Fuel Tank Capacity gal (L) 9.4 (35.6), Two Independent 4.7 Gallon Tanks with Selector Valve
Fuel Diesel Fuel 2-D
Cooling System Capacity qt (L) 5.4 (5.1)
Cooling Fan Electric Radiator Cooling Fan with Reversible Self-Cleaning Action
Coolant 50/50 Pre-Mix Antifreeze/Water
Air Cleaner Remote Mounted Donaldson RadialsealTM (5")
(Walker P/N 5090-8 Primary/5090-7 Safety Filter)
ELECTRICAL SYSTEM
Battery 12 Volt, 350 CCA (Interstate SP-40)
Charging System Flywheel Alternator
Charging Output 30 Amp DC (Regulated)
System Polarity Negative Ground
Ignition Diesel with Glow Plugs
Starter 12 Volt Electric Ring-Gear Type, Solenoid Shift
Interlock Switches Ignition Lockout by Seat Switch, Transmission Neutral,
Blade Clutch, and Parking Brake
Circuit Breaker(s) Auto Reset (One 40A, Two 30A)
Manual Reset (One 10A, One 7A)
TRANSMISSION
Manufacturer/Model Dual Hydrostatic Hydro-Gear® ZT3400 Integrated Transaxles
Steering Hand Lever Control / Individual Wheel
Forward Speed Control Precision Friction Lock Lever, Cruise Control, with
Neutral-Park Position
Service Brake Dynamic Braking through Transaxles
Parking Brake Internal Mechanical Cog Lock for each Transaxle
(Single Lever Control)

Specications H24d
4
TRANSMISSION (continued)
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 Oil Capacity  oz (L) 77 (2.3)
Transmission Cooling Cooling Fan Mounted on Drive Pulley
Oil Filter Hydro-Gear® P/N 52114 (Walker P/N 2026-6)
Ground Travel Speed
Forward MPH (km/h)
Reverse MPH (km/h)
0-10 (0-16) Innitely Variable
0-5 (0-8) Innitely Variable
BLADE DRIVE
PTO Shaft Quick Disconnect Sliding Spline Shaft with Two (2) High-Speed
U-Joints
Blade Drive Clutch and Brake Manual Belt Tightener Clutch and Band Brake
[Stops Blades within Five (5) Seconds of Disengagement]
TIRE SIZE
Deck Caster Wheel 13 x 4.50-6 Pneumatic (6-Ply)
Drive 22 x 10.50-12 (4-Ply Low-Prole)
Tailwheel 13 x 4.50-6 Pneumatic (6-Ply)
TIRE PRESSURE PSI (KPA)
Deck Caster Wheel 20 (137)
Drive 15 (103)
Tailwheel 20 (137)
DRIVE BELTS
Engine PTO Walker P/N 2230 (Matched Set of 3)
Ground Drive Walker P/N 2248-1
SEAT Full Spring Suspension with Dampening and Adjustments for Back
Angle, Lumbar Support, and Operator Weight. Standard with Ad-
justable/Retractable Armrests.
FRAME/BODY CONSTRUCTION
Frame All Welded Unitized Steel Chassis
Body 14 Gauge Steel
Deck 11 Gauge Steel
TOWING
Towing Capacity lb (kg) 250 (113) if equipped with a factory installed or factory authorized
tow hitch

H24d Specications
5
DIMENSIONS (Tractor and Mower)
Length in. (cm)
Tractor Only 69 (175)
Tractor Wheel Base 45 (115)
Tractor with Tilted Deck
(DR64-3)
87.75 (223)
Tractor with 64" Rear Discharge
Deck (DR64-3)
107.75 (274)
Width in. (cm)
Tractor Only (Outside Tire) 46.5 (118)
Tractor with 64" Rear Discharge
Deck (DR64-3)
66 (168)
Tread Width 36.5 (93)
Height in. (cm)
Tractor Only 46.5 (118)
With ROPS 66.25 (168)
With ROPS Lowered 51.25 (130)
Weight (No Fuel) lb (kg)
Tractor Only 997 (452)
Tractor with 64" Rear Discharge
Deck (DR64-3)
1434 (650)
DECK DR52 DR64 DS61
Type Belt-Driven,
Rear Discharge
Belt-Driven,
Rear Discharge
Belt-Driven,
Side Discharge
Cutting Width in. (cm) 52 (132) 64 (163) 61 (155)
Cutting Height in. (cm) 1.5 to 5 (3.8 to 12.7)
Height Adjustment in. (cm) 1/4 (1) Increments, 15 Positions
Blade Length in. (cm) 18.4 (47) 22.2 (56) 20.5 (52)
Number of Blades 3
Direction of Rotation
(Viewed from top of deck)
Clockwise
Deck Suspension Torsion-Flex Frame with Caster Wheels and Counterweight Springs
Maximum Blade RPM 3840 3200 3330
Maximum Blade Tip Speed
ft/min (m/min)
18500 (5640) 18500 (5640) 17870 (5460)
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.

Component Identication H24d
6
COMPONENT IDENTIFICATION
NOTE: Operator Controls are identied in the sec-
tion Operating Instructions on page 28.
Front View and Right Side View
Forward Speed
Control (FSC)
Friction
Adjustment
Deck Support Arm
(Not Visible)
Deck Height
Lift Chain
Deck Lift
Foot Pedal
(Raises Deck)
Cutting Height Release Lever
(Cutting Height Adjustment)
Tilt-Up
Hook
Deck Tilt-Up
Socket
Deck
Caster Wheels
Roll-Over Protection
System (ROPS)
Body Tilt-Up
Latch
Deck Tilt-Up
Bar
Counterweight Springs and
Protective Covers
Deck Support
Arm
Adjustable
Footrest
Tilt-Up
Latch
Adjustable
Footrest