Walker MC (20 HP) Owner's Manual

Also see for MC (20 HP): Illustrated parts manual

Contents

Walker MC (20 HP) Owner's Manual Manual pdf 63 page image

59Maintenance Instructions CHECKING/SERVICINGWARNINGDO NOT try to straighten a blade that isbent. NEVER weld a broken or crackedblade. ALWAYS replace with a new bladeto assure safety.4. 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.CAUTIONALWAYS wear eye protection and gloveswhen sharpening a blade.WingTipDo Not Grind orSharpen on UndersideIntersectionWear AreaSharpen atOriginal 30° Angle30°Mower Blade Profile For Sharpening6. Check blade balance by positioning the bladehorizontally on a blade balancer or use a nailor shaft through the center hole. If either end ofthe blade rotates downward, grind (remove)metal on that end until the blade will balance.The blade is properly balanced when neitherend drops. Balance of a blade is generallymaintained by removing an equal amount ofmaterial from each end of the blade whensharpening.Blade BalancerBlade 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 beforeinstalling 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.