Walker MT Owner's Manual

OWNER’S MANUALSafety, Assembly, Operating, and Maintenance InstructionsModel MT (20.0 / 25.0 HP)(Covers Serial Numbers 95-21329 and on)Please Read and

Specifications6MODELMT 20.0 HP MT 25.0 HPDRIVE BELTSEngine PTO Walker P/N 8230 Walker P/N 8230Jackshaft Drive Gates 3VX355(or Walker P/N 6231)Gates 3V

Component Identification 7Front View and Right Side ViewNOTE: Control Identificationshown in OperatingInstructions section.Grass Handling System7.0 Bu

Component Identification8Catcher DoorGas SpringInstrument PanelGuardInstrument Panel Box(Shock Mounted)Deck Lift RodLeft HandDrive WheelMufflerTailpip

Component Identification 9Air Restriction Indicator(Not Visible)Air Intake Hose(Primary to Secondary)Air CleanerBase PlateFuel PumpEngine Air Cleaner(

Safety Instructions10Pay particular attention to any information labeledDANGER, WARNING, CAUTION, IMPORTANT,and NOTE in this manual.When you see th

Safety Instructions116. Do not wear loose fitting clothing that could getcaught in moving parts. Do not operate thismachine while wearing shorts; al

Safety Instructions1210. Disengage the blade drive when transportingthe machine across drives, sidewalks, etc. Ne-ver raise the mower deck while blad

Safety Instructions134. Perform only maintenance instructions de-scribed in this manual. Unauthorized main-tenance operations or machine modificatio

Safety Instructions14Adjacent to Blower Discharge Chutethrough Body (5804)SD Deck Discharge Shield (5848)Front Body Adjacent toRH Steering Lever (7818

Safety Instructions 15Instrument Panel (8823)Fender, RH Side (7802)Catcher Door Hinge Bar,LH and RH Sides (5868)Left Side of Operator Seat (7819)

ForewordThank you. . .for purchasing a Walker mower. Every effort has been made to provide you with themost reliable mower on the market, and we are

Assembly Instructions16SETUP INSTRUCTIONSWalker Mowers are shipped partially assembled.After uncrating the tractor and mower deck, initialsetup is req

Assembly Instructions173. After the battery is filled with electrolyte, replacethe filler caps and charge the battery. Refer toBattery Charging.Batte

Assembly Instructions18Deck Caster Wheel InstallationNOTE: If semi-pneumatic wheels are installed,make sure the spacer washers fit over the spacertube

Assembly Instructions19NOTE: When installing the DSD52 or DSD62Mower deck, make sure to retract the dollywheel after mounting the deck on the tractor.

Assembly Instructions20Deck Counterweight Spring InstallationDeck Leveling1. Position mower on a smooth, level surface. Setthe cutting height to the

Assembly Instructions21PREOPERATING CHECKLISTBefore operating the mower for the first time, and asa routine before daily operations, it is important t

Assembly Instructions22 CHECK GEAR AXLE OIL LEVEL Refer to Gear Axle Lubrication in Maintenance In-structions. INSPECT FOUR (4) DRIVE BELTS Engine P

Assembly Instructions23 CHECK MOWER BLADE CONDITION, SHARP-NESS, AND SECURITY OF MOUNTINGThe blade mounting nut should be tightened to60 ft-lb (81.3

Operating Instructions24CONTROL IDENTIFICATION, LOCATION, AND FUNCTION Operating ControlsEngine ChokeThe choke control lever (black knob) is located o

Operating Instructions25Choke and Throttle LocationEngine ThrottleThe throttle control lever (red knob) is located on theleft side of the seat and is

Table of ContentsGeneral Information ________________ 1 HIGHLIGHTED INFORMATION _____________ 1 GLOSSARY ____________________________ 1 IDENTIFYING NU

Operating Instructions26Front Body Latch ReleaseThe front portion of the tractor body hinges forwardfor maintenance access and is latched down in theO

Operating Instructions27CHOKETHROTTLEBLADE CLUTCH (PTO)Pull Up to EngagePARKINGBRAKEIntermediateGround SpeedPositionThe Forward Speed Control also Est

Operating Instructions28Instrument PanelInstrument PanelThis illustration shows the configuration of theswitches and indicators located on the instrum

Operating Instructions29HourmeterThe hourmeter displays operating time accumu-lated while the ignition switch is in the ON position.Voltmeter The volt

Operating Instructions30STARTING THE ENGINE1. Before attempting to start the engine, makesure the operator is in the seat, the ForwardSpeed Control is

Operating Instructions31IMPORTANT: Make sure the choke is in the OFFposition during normal engine operation; runningwith the choke in the ON position

Operating Instructions32Correct Operator Hand Positionon the Controls3. Reverse direction of the mower by pulling bothlevers backward.NOTE: Smooth act

Operating Instructions33 Blade Clutch EngagedBlade Clutch DisengagedSTOPPING THE MACHINE1. Slow the engine to a fast idle; put the throttle inthe 1/2

Operating Instructions34ADJUSTING CUTTING HEIGHTCutting height is adjusted by positioning the four re-tainer hitch pins in a series of seven vertical

Operating Instructions35RECOMMENDATIONS FOR MOWINGIMPORTANT: Operate the engine at full speedwhen mowing, to allow the engine to produce fullhorsepowe

Table of ContentsMaintenance Instructions__________ 44 MAINTENANCE SCHEDULE CHART _______ 44IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINE _____ 45 Fuel

Operating Instructions36RECOMMENDATIONS FOR TILT-UP DECK OPERATION/TRANSPORTTo avoid potential deck and/or tractor damage whileusing the tilt-up deck,

Operating Instructions37GRASS HANDLING SYSTEM (GHS)GHS Model OnlyGHS Flow and ComponentsPTO and BladeGear DrivePTOClutchRear DischargeMower DeckDeckDi

Operating Instructions38General InformationThe Grass Handling System (GHS) consists of arear discharge mower deck connected to a 10 in.(25 cm) blower

Operating Instructions39Clogging ChecklistIn case of clogging, there will be a distinct changein the sound of the blower, i.e., the blower soundwill s

Operating Instructions40• Check that the openings in the removable airexhaust screen in the grass catcher are notplugged. If the screen is clogged,

Operating Instructions41Dumping the CatcherFor dumping, the catcher either tailgate dumps intoa disposal area or dumps into the optional dumpbag. The

Operating Instructions423. Hook the bottom of the bag over the rearbumper while lifting on the handle strap.4. Tilt the catcher back to dump into the

Operating Instructions43Power Dump ComponentsGrass CatcherCableGuideCatcher DoorGas SpringCatcher DoorCable RodGuideCable AssemblyActuator MountAssemb

Maintenance Instructions44MAINTENANCE SCHEDULE CHART - RECOMMENDED SERVICE INTERVALS - MODEL MTService ItemDaily25 Hours100Hours200Hours YearlyEvery 2

Maintenance Instructions KOHLER TIPS45IMPORTANT TIPS FOR CARE OF THE KOHLER ENGINEFuel System• Fuel must be clean - free from water, dirt, and or-gani

General Information1HIGHLIGHTED INFORMATIONWalker Manufacturing recommends that any ser-vice requiring special training or tools be performedby an aut

Maintenance Instructions LUBRICATION46LUBRICATIONProper lubrication is an important maintenance pro-cedure. It reduces wear and makes the machine qui

Maintenance Instructions LUBRICATION471. Park the mower on a level surface with the en-gine stopped. The engine oil should be warmbefore draining. I

Maintenance Instructions LUBRICATION48Ident Lubrication No.No. Location Type PlacesIdent Lubrication No.No. Location Type Places1 Deck Caster Wheel F

Maintenance Instructions LUBRICATION49Chassis and Deck Lubrication Points

Maintenance Instructions LUBRICATION50Mower Deck Gearbox LubricationNOTE: These instructions apply to all mower deckswith gear-driven blades. Refer t

Maintenance Instructions LUBRICATION512. Check the oil level in the belt drive gearbox ev-ery 100 hours (or sooner if a visible oil leak hasdeveloped

Maintenance Instructions LUBRICATION52Hydrostatic Transmission FluidChecking Hydrostatic Transmission Fluid LevelHydrostatic transmission fluid level

Maintenance Instructions LUBRICATION/CLEANING533. Reinstall the lower drain plug, making sure therubber O-ring on the plug is in place and ingood cond

Maintenance Instructions CLEANING54Turbine PrecleanerThe turbine precleaner is mounted on a remote airintake tube connected to the Donaldson air clean

Maintenance Instructions CLEANING551. Release the top and bottom cover latches andremove the air cleaner cover. Wash the coverand Vacuator™ valve. C

General Information2Tractor Serial Number LocationMower Deck Serial Number LocationENGINE SERIAL NUMBER LOCATIONRefer to the engine manual that accomp

Maintenance Instructions CLEANING56Kohler Air Cleaner (Secondary)NOTE: The Kohler Air Cleaner should only be ser-viced more often than a yearly interv

Maintenance Instructions CLEANING57Air Filter ReinstallationEngine Cooling SystemAir Intake SystemTo prevent engine overheating and possible enginedam

Maintenance Instructions CLEANING58Grass Buildup in Mower HousingNon-Tilting Decks1. Raise the deck and secure it in the UP positionby hooking the dec

Maintenance Instructions CLEANING59NOTE: While some degree of material buildupin the mower deck housing can be tolerated, apoint is finally reached wh

60Maintenance InstructionsCLEANING/CHECKING/SERVICINGHydrostatic Transmission Cooling FinsKeeping the cooling fins on the hydrostatic transmis-sions c

61Maintenance InstructionsCHECKING/SERVICING3. Replace filler caps.IMPORTANT: DO NOT overfill the battery. Electro-lyte will overflow through the ven

Maintenance Instructions CHECKING/SERVICING624. If the blade cutting edge is dull or nicked, itshould be sharpened. Remove blades forsharpening by gr

63Maintenance InstructionsCHECKING/SERVICING/REPLACING/REPAIRINGMower Deck Gearbox Oil SealsThe mower deck gearbox seals should be inspectedevery 25 h

Maintenance Instructions REPLACING/REPAIRING64JackshaftDrive BeltEngine PTOBeltGHS Blower Belt(GHS Model Only)Hydrostatic GroundDrive BeltBelt Locatio

Maintenance Instructions REPLACING/REPAIRING65Engine PTO Drive Belt (3 Groove Power Band)1. To remove the engine PTO drive belt:a. Remove the jackshaf

Specifications3MODELMT 20.0 HP MT 25.0 HPENGINEManufacturer/Model Kohler CH20, 2 Cyl.,Gasoline (Air Cooled)Kohler CH25, 2 Cyl.,Gasoline (Air Cooled)Di

Maintenance Instructions REPLACING/REPAIRING66Jackshaft Drive Belt1. To remove the jackshaft drive belt:a. Remove the engine PTO drive belt, asdescrib

Maintenance Instructions REPLACING/REPAIRING67GHS Blower Drive Belt1. Remove the GHS blower drive belt by unhook-ing the belt tension spring from the

Maintenance Instructions REPLACING/REPAIRING68Hydrostatic Ground Drive Belt1. To remove the hydrostatic ground drive belt:a. Raise the spring-loaded b

Maintenance Instructions REPLACING/REPAIRING69Fuel FilterModel MT is equipped with an in-line fuel filter. Vi-sually inspect the filter periodically,

Maintenance Instructions REPLACING/REPAIRING70After reinstalling the blade, check blade timing bymoving blades through one (1) complete revolu-tion. M

Maintenance Instructions REPLACING/REPAIRING71NOTE: With oil flow throughout the unitizedgear drive assembly; if one gearbox has internaldamage or exc

Maintenance Instructions REPLACING/REPAIRING724. Remove the blower assembly from the chassisas follows:a. Remove the blower skid bar by removingfront

73Maintenance Instructions ADJUSTMENTSADJUSTMENTSSafety SwitchesThere are three (3) safety interlock switches on thetractor. Use the panel nuts on th

Maintenance Instructions ADJUSTMENTS74Blade Clutch (PTO)Clutch Engagement/Belt TensionThe clutch engagement and PTO belt tension areadjusted using the

Maintenance Instructions ADJUSTMENTS75Clutch Disengagement/Brake ActionThe declutched or disengaged position of theblade clutch idler pulley is adjus

Specifications4MODELMT 20.0 HP MT 25.0 HPTRANSMISSION (continued)Service Brake Dynamic Braking throughHydrostatic TransmissionDynamic Braking throughH

Maintenance Instructions ADJUSTMENTS76Use the following procedures to check and adjustclutch disengagement and brake action:Stop Block Eccentric Adjus

Maintenance Instructions ADJUSTMENTS77 Blade Brake Band AdjustmentNOTE: The length of the actuator rod is adjustedby disconnecting the bottom clevis a

Maintenance Instructions ADJUSTMENTS783. Tighten the jam nut on the forward travel stopadjusting bolt.Forward Speed Control Stop and Steering Lever Ad

Maintenance Instructions ADJUSTMENTS79Straight Ground Travel Adjustment - Step 41. Sit in the seat, start the engine (operate at nor-mal speed), and w

Maintenance Instructions ADJUSTMENTS80Tilt-Up Deck Adjustable StopWhen the carrier frame hinge joint is properly adjust-ed, the deck lock levers shoul

Maintenance Instructions ADJUSTMENTS812. Preliminary Setting: Turn the idle mixture nee-dle valve out (counterclockwise) 1-1/2 turnsfrom the closed po

82Maintenance InstructionsADJUSTMENTS/ELECTRICAL SYSTEMChecking the Grass-Pak® SwitchAdjustment (When Horn Sounds at the Wrong Time)Very little, if an

83Maintenance Instructions ELECTRICAL SYSTEMWiring Diagram - Model MT

84Operator’s Notes

85Operator’s Notes

Specifications5MODELMT 20.0 HP MT 25.0 HPTIRE PRESSUREDeck Caster Wheel 20 PSI (137 kPa) 20 PSI (137 kPa)Drive 15 PSI (103 kPa) 15 PSI (103 kPa)Rear 2

86Operator’s Notes

87LIMITED WARRANTYFORWALKERCOMMERCIAL RIDER MOWER1. WHAT THIS WARRANTY COVERS, AND FOR HOW LONG:Walker Manufacturing company will, at its option, repa

WALKER MFG. CO. • 5925 E. HARMONY ROAD, FORT COLLINS, CO 80528 • (970) 221-5614FORM NO. 101298 PRINTED IN USA ©1998 WALKER MFG. COSound - Model MT2