Walker MT Detailed Instructions

Also see for MB: Owner's manual Parts and owners manual

Walker MT Detailed Instructions Manual pdf 118 page image

Page: 3-16WALKER MANUFACTURING COMPANYJuly 2006SERVICE INSTRUCTIONSFuel Valve Solenoid - Model MDThe starting and stopping of the diesel engine is con-trolled by the fuel shut-off valve. If the engine cranks,but does not start or the engine does not stop when theignition switch is turned OFF, check operation of the fu-el valve.Raise the mower body and locate the fuel valve on theengine. The valve is operated by an electric solenoidwhich is controlled by the ignition switch. The valveis open when the ignition key is moved to the START orRUN position, and the valve is closed when the ignitionkey is moved to the OFF position.Fuel Valve Closed (Engine OFF Position)Fuel Valve Open(Engine START and RUN Position)If the fuel valve solenoid is not operating properly, theproblem may be isolated by first checking the opera-tion of the solenoid as follows:1. Disconnect the fuel valve solenoid wire plug fromthe wire harness.2. Make jumper wire connections from the solenoid tothe battery:a. Red wire to positive terminal (+), black wire toground (-).b. Touch white wire to the positive terminal (+)and the solenoid should pull closed (open thefuel valve).c. Remove the white wire and the solenoidshould hold the fuel valve open.d. Remove the red wire and the solenoid shouldopen (close the fuel valve).Replace the solenoid if it does not operate properly bythe above test. If it does operate, the problem is in theelectrical system and can be checked using the wiringdiagram. Refer to SCHEMATICS for the Wiring Dia-gram in the Electrical Systems Section.Fuel ValveSolenoidFuel Control Arm in Closed PositionFuel Shut-OffValveFuel Control Arm InOpen (Run) PositionFuel Shut-OffValveThrottle Control Arm (Noted For Reference)