Walker How to Check Hydrostatic Fluid and Transmission in Your Lawn Mower - Hydro Oil Guide

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Maintenance Instructions

LUBRICATION

Hydrostatic Transmission Fluid

Checking Hydrostatic Transmission Fluid Level

Hydrostatic transmission fluid level should be checked every 25 hours of machine operation. It is preferable to check the fluid level when fluid is cold. Check fluid level as follows:

1.Park the mower on a level surface. Stop the engine and wipe dirt and contaminants from around the reservoir cap and air bleed plug.

IMPORTANT: Before removing the reservoir cap, clean any dirt from around it. Any dirt or con- taminants entering the transmission will acceler- ate wear and eventually cause loss of power to the drive wheels.

2.Remove the reservoir cap and check the level of the fluid. The reservoir has a fluid level COLD mark and HOT mark. The reservoir oil level should ALWAYS be at or above the COLD mark and NEVER above the HOT mark.

Reservoir Cap

Hot Level

Cold Level

Air Bleed Plug

Transmission Reservoir

and Air Bleed Plug Location

3.If the fluid is below the COLD mark (or the trans- mission is not performing properly), loosen the air bleed plug (located on the top of transmis- sion case next to the plastic reservoir).

a.If a small amount of fluid leaks from around the air bleed plug:

*The transmission is full of fluid.

*Tighten the plug and fill the reservoir to the COLD level mark.

b.If no fluid leaks from around the air bleed plug:

*Slowly add fluid into the reservoir until fluid starts to leak from around the plug. (Transmissions are serviced from the factory with Mobil DTE 18M hydraulic oil. When it is necessary to add fluid, refer to Specifications for the proper flu- id. Any of the listed fluids may be used.)

*As soon as there is fluid leaking from around the air bleed plug, tighten the plug and fill the reservoir to the COLD level mark. Wipe any excess oil off of the transmission housing.

IMPORTANT: DO NOT overfill the transmission reservoir. This will result in oil leaking out of the res- ervoir cap vent when the transmission warms up. It is preferable to add fluid to the transmission when it is cold and make sure the oil is not above or be- low the COLD level mark.

IMPORTANT: The transmission reservoir has a fine mesh screen in the bottom to trap dirt and for- eign particles from entering the transmission. When filling the reservoir, fluid will flow quite slowly through this screen; so it is essential that there is flu- id at the bleed plug before the transmission is con- sidered full.

IMPORTANT: Any attempt to remove or in any way alter the filtering screen in the transmission reservoir could cause damage to the transmission and will VOID any transmission warranty.

Changing Hydrostatic Transmission Fluid

The hydrostatic fluid should be changed every 1000 hours or two (2) years. Also, the fluid should be changed if the natural color of the fluid has become black or milky (indicating possible overheating or water contamination of fluid). The transmission may be refilled using any of the fluids listed in Specifications. The fluid is changed as follows:

1.Park the mower on a level surface and stop the engine.

2.Remove the lower drain plug and the air bleed plug. Allow the fluid to drain out.

IMPORTANT: Clean any dirt from around the plugs and reservoir cap before removing them.

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Contents Please Read and Save These Instructions Foreword Table of Contents Engine Air Cleaner System Grass Buildup in Mower HousingREPLACING/REPAIRING Mower Deck Gearbox Replacement GHS Blower AssemblyGeneral Information GlossaryIdentifying Number Locations Fill In By PurchaserServicing of Engine and Drivetrain Components Specifications EngineElectrical System TransmissionTransmission Transmission FluidGround Travel Speed Blade DriveCurb Weight Approximate Tire PressureMower Deck Blade Size TypicalDrive Belts SeatComponent Identification Front View and Right Side ViewRear View and Left Side View PTO Top View Engine CompartmentDo not mow with bystanders in the area Safety InstructionsBefore Operating Operating Maintenance Safety Instructions SAFETY, CONTROL, and Instruction Decals SAFETY, CONTROL, and Instruction Decals Assembly Instructions Setup InstructionsBattery Service Wet Battery ServiceBattery Charging Battery InstallationBattery Installation Mower Deck Assembly Deck Caster Wheels InstallationDeck Caster Wheel Installation Discharge Shield Installation On Side Discharge DeckDeck Installation Mower Deck lnstallation on TractorCoupler Ring Locked Position Installing PTO Quick CouplerMower Deck Installation PTO Shaft Connection Deck Counterweight Spring Installation Machine must be shut off during this procedureDeck Leveling Deck LevelingRefer to Adjustments of Carburetor in Mainte TionsDeck Secured in TILT-UP Position Refer to Gear Axle Lubrication in MaintenanceRefer to CHECKING/SERVICING the Battery Adjust Mower Cutting HEIGHT, if RE- Quired Operating Instructions Control IDENTIFICATION, LOCATION, and FunctionEngine Choke Operating ControlsChoke and Throttle Location Engine ThrottleSteering Levers Blade Clutch PTOFront Body Latch Release Lockout Lever LocationOptional Cold Start Lever Jackshaft Drive Belt Release Optional Cold Start Lever Normal Operating PositionOperating Controls Top View from Drivers Point of View Instrument Panel Ignition Switch Ignition SwitchHourmeter VoltmeterOptional Cold Start Lever Starting the EngineDisengaged Adjusting Ground Speed and Steering Keep feet on footrests all times when the machine is movingCorrect Operator Hand Position On the Controls Engaging the MowerStopping the Machine Blade Clutch EngagedBlade Clutch Disengaged Cutting Height Adjustment Transmission LockoutLockout Lever Freewheel Position Lockout Lever Normal Operating PositionMaximum Recommended Side Slope Recommendations for MowingSide Discharge Shield in Lowest Position Recommendations for TILT-UP Deck OPERATION/TRANSPORT GHS Model Only GHS Flow and ComponentsRotating Blower Blades General InformationBlower Intake Cover Blade Rotation for GHS Mower Deck View from underneath Clogging ChecklistForward Powerfil Full Signal HornCleaning the GHS Exhaust Screen Grass Catcher Screen Removal for CleaningCatcher Door Safety Latch Using the Dump Bag 7.0 Bushel CatcherTailgate Dumping Pinch Point Spring Loaded DoorPower Dump Option Dumping Catcher into Dump BagPower Dump Components Maintenance Instructions Maintenance procedures requiring special training orService Item 100 200 Every Daily Hours Yearly 2Years Tools should be performed by a trained technicianImportant Tips for Care of the Kohler Engine Dipstick Operating Range LubricationEngine Oil Oil Drain/Oil Filter Location Grease Fitting and Oil Point LubricationIdent Lubrication Location Type Chassis and Deck Lubrication Points Mower Deck Gearbox Lubrication Mower Deck GearboxesDSD52 or DSD62 Mower Deck Lubrication Blade Spindle LubricationChecking Gearbox Oil Level Dipstick Location, Tractor PTO GearboxGear Axle Lubrication ∙ Change axle oil every 1000 hours or two 2 yearsChanging Hydrostatic Transmission Fluid Checking Hydrostatic Transmission Fluid LevelTransmission Reservoir Air Bleed Plug Location Cleaning Engine Air Cleaner System ComponentsTurbine Precleaner Donaldson Radialseal Air Cleaner PrimaryAir Cleaner Components Shown with cover being removed Air Restriction Gauge LocationAir Filter Element Replacement Kohler Air Cleaner Secondary Foam Precleaner Paper ElementAir Filter Reinstallation Engine Cooling System Engine Air Intake Screen Cooling Fin Access PanelsAir Intake System Cooling System AirflowTilt-Up Decks Non-Tilting DecksDeck Secured in UP Position Inspect the blower frequently for dirt buildup Battery Hydrostatic Transmission Cooling FinsCHECKING/SERVICING Electrolyte LevelCleaning the Terminals Mower Blade Profile For Sharpening Blade Balanced on Magnetic Wall-Mounted BalancerREPLACING/REPAIRING Spark PlugsREPLACING/REPAIRING Belt LocationsEngine PTO Drive Belt 3 Groove Power Band Engine PTO Drive Belt RemovalJackshaft Drive Belt Disengaged Jackshaft Drive Belt EngagedGHS Blower Drive Belt Assembly Engaged Hydrostatic Ground Drive Belt Assembly Disengaged Hydrostatic Ground Drive Belt Assembly EngagedFuel Filter Fuel Filter LocationFuel Shut-Off Valve and Filter Blade Overload Shear Bolts Cutting Blade Shear BoltsMower Blades Remove Skid Bar for GHS Blower Removal GHS Blower Assembly and/or Blower WheelGHS Blower Assembly Removal Pressing Blower Wheel Out of Housing PTO Switch AdjustmentsSeat Switch PTO Clutch Engaged Blade Clutch PTOClutch Engagement/Belt Tension PTO Clutch Disengaged Blade Brake Band Adjustment PTO Belt Tightener Stop Block AdjustmentsClutch Idler Pulley Travel Adjustment Brake Actuator Rod Adjustment Set Forward Travel Limit Stop StepForward Speed Control Stop Steering Lever Adjustment Steering Lever End Play Adjustment StepNeutral Function Adjustment Step Neutral Function AdjustmentStraight Ground Travel Adjustment Step Tilt-Up Deck Adjustable Stop Troubleshooting When Horn Fails to Operate Carburetor AdjustmentGHS Full Signal Horn with Grass-Pak Switch Checking the Grass-PakSwitch Adjustment When Horn Sounds at the Wrong TimeGrass-PakSwitch Vane Adjustment Circuit BreakersWiring Diagram Model MT Operator’s Notes Operator’s Notes Operator’s Notes Limited Warranty For Walker Commercial Rider Mower Sound Test Vibration Level

MT specifications

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