13Fuel shut off valve is located at the right rear ofthe seat. The valve has three positions a righttank, left tank and center is the off position. FIG -13. NOTE: EFI models the left position is the offposition.Pump release valves located at the right frontcorner of the pumps. Used to release thesystem so the machine may be moved by handwhen not running. Tilt seat forward to gainaccess to the pumps. Use a 5/8” wrench toopen valve. NOTE: Only rotate valve 1/4 turn torelease system.MaintenanceWARNING: No settings, adjustments ormaintenance is to be made unless: Engineis stopped, key has been removed, parkbrake is on and battery cable removed frombattery.Annual inspection and maintenance from anauthorized Yazoo/Kees dealer is recom-mended to keep your machine in the bestcondition mechanically and ensures safeoperation.Engine oilShould be checked daily before starting themachine. See the engine manufacturers manualfor specifications on type of oil, filling instruc-tions and service intervals. FIG - 14Mower bladesInspect blades and sharpen or replace asneeded. Check blades daily or as needed. Bent,cracked or blades with large notches in themshould be replaced. Sharpen to an angle of 22to 28 degrees. Always check the balance of theblades after sharpening to prevent excessivevibration.MAINTENANCESafety interlock systemCheck daily and never operate the machine ifthe system is not functioning properly. Thestarter should crank only when the operator is inthe seat, the parking brake is applied, bladeswitch off and the motion control levers in theneutral slots. If the machine starts with any ofthese controls in an operating position, turn themachine off an repair the system immediately.“F” FullMarkOperatingRangeFuel ValveFIG - 13FIG - 14