Walker MC (18 HP) Owner's Manual

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Contents

Walker MC (18 HP) Owner's Manual Manual pdf 61 page image

57Maintenance Instructions CHECKING/SERVICING4. If the blade cutting edge is dull or nicked, itshould be sharpened. Remove blades forsharpening by grasping the end of the blade us-ing a rag or a thick, padded glove, while loosen-ing and removing the nut, lock washer, and flatwasher that mounts the blade.5. Grind cutting edge at the same bevel as theoriginal. Sharpen only the top of the cuttingedge to maintain sharpness.NOTE: Blades can be sharpened with an elec-tric blade sharpener, conventional electric grind-er, or a hand file.Mower Blade Profile For Sharpening6. Check blade balance by positioning the bladehorizontally on a blade balancer or use a nail orshaft through the center hole. If either end of theblade rotates downward, grind (remove) metalon that end until the blade will balance. Theblade is properly balanced when neither enddrops. Balance of a blade is generally main-tained by removing an equal amount of materialfrom each end of the blade when sharpening.Blade Balanced on MagneticWall-Mounted Balancer7. Mount the blade with wing tips pointing up intothe housing. Reinstall the blade, washer, lockwasher, and nut. Tighten the nut to 60 ft-lb(81.3 N⋅m).NOTE: When reinstalling blades on GHS models,remember, the blades turn toward each other(counter-rotate) and the RH and LH blade cannot beswitched. Check for proper blade rotation before in-stalling blades on the deck. Refer to Blade Rota-tion for GHS Mower Deck illustration shown inClogging Checklist in Operating Instructions forcorrect blade rotation.Drive BeltsRaise the body and inspect the condition of thefour (4) belts (3 belts on SD models) every 25 hoursof operation - engine PTO drive, jackshaft drive, hy-drostatic ground drive, and GHS blower drive. If thebelts show signs of cracking or deteriorating, thebelts should be replaced. Refer to REPLACING/REPAIRING the Drive Belts in this section.WARNINGDO NOT try to straighten a blade that isbent. NEVER weld a broken or crackedblade. ALWAYS replace with a new bladeto assure safety.CAUTIONALWAYS wear eye protection and gloveswhen sharpening a blade.30°Do Not Grind orSharpen on UndersideSharpen atOriginal 30° AngleIntersectionWear AreaWingTipBlade Balancer