Walker MDD (20.9 HP) Owner's Manual

Also see for MDD: Owner's manual Owner's manual

Contents

Maintenance Instructions CHECKING/SERVICING64Fuel Lines and ClampsEvery year, inspect the fuel supply line from the tankto engine for deterioration or damage. Also, inspectthe fuel line clamps for tightness. Good preventivemaintenance calls for complete replacement of fuellines and clamps every two (2) years.NOTE: This procedure is of special importance forthe diesel engine due to poor performance when airis injected with the fuel.Radiator Hoses and ClampsInspect the radiator hoses every 200 hours for de-terioration or damage. Also check the tightness ofthe hose clamps. Good preventive maintenancecalls for complete replacement of the radiator hosesand clamps every two (2) years.Engine Valve ClearanceCheck and adjust the Kubota engine valve clear-ance every 800 hours. Refer to the Kubota EngineOwner’s Manual and Workshop Manual for specifi-cations and procedure to check the valve clearance.For engine servicing, contact an authorized Kubotaengine dealer or a trained engine technician.IMPORTANT: Always use the proper engine ser-vice manual when working on the engine. Improperengine maintenance or adjustments will adverselyaffect engine operation, performance, and durabilityand may VOID the warranty.Fuel Injection Nozzle PressureCheck and adjust the Kubota diesel engine fuel in-jection nozzle pressure yearly or every 1000 hours(or in case of low power). Refer to the Kubota Work-shop Manual for specifications and procedures tocheck nozzle pressure. For engine servicing, con-tact an authorized Kubota engine dealer or a trainedengine technician.IMPORTANT: Always use the proper engine ser-vice manual when working on the engine. Improperengine maintenance or adjustments will adverselyaffect engine operation, performance, durability, andmay VOID the warranty.Fuel Valve SolenoidThe starting and stopping of the diesel engine iscontrolled by the fuel shut-off valve. If the enginecranks, but does not start or the engine does notstop when the ignition switch is turned OFF, checkoperation of the fuel valve.Raise the mower body and locate the fuel valve onthe engine. The valve is operated by an electric so-lenoid which is controlled by the ignition switch.The valve is open when the ignition key is moved tothe START or RUN position, and the valve is closedwhen the ignition key is moved to the OFF position.Fuel Valve Closed (Engine OFF Position)WARNINGThe fuel oil injection system operates un-der high pressure and can penetrate theskin and result in serious injury. Unqual-ified persons should not remove or at-tempt to adjust a pump injector, nozzle, orany part of the fuel injection system.Fuel ValveSolenoidFuel Control Arm in Closed PositionFuel Shut-OffValve