Walker MT, MTL, MTEFI, MTLEFI Owner's Manual

Also see for MT, MTL, MTEFI, MTLEFI: Detailed instructions Owner's manual Owner's manual

Contents

72Maintenance Instructions CHECKING/SERVICINGTire PressureInflate tires to pressures shown below:Deck Caster Wheel = 20 PSI (137 kPa)Drive = 15 PSI (103 kPa)Rear = 20 PSI (137 kPa)Wheel Bolt TorqueCheck every 100 hours the eight (8) lug bolts thatmount the drive tires. They should be torqued to 75to 85 ft-lb.Sharpen Mower BladesCheck mower blade(s) for straightness, sharp-ness, condition of the cutting edge, and balanceevery 10 hours of operation (or more often whenmowing abrasive type grass or operating on sandysoils). Replace blades if worn, bent, cracked, orotherwise damaged (refer to REPLACING/RE-PAIRING the Mower Blades in this section). Use thefollowing procedure to check and sharpen blades:NOTE: Keep blades sharp - cutting with dullblades not only yields a poor mowing job but slowsthe cutting speed of the mower and causes extrawear on the engine and blade drive by pulling hard.1. Stop the engine, remove ignition key, and dis-connect the spark plug wires before raising themower deck to service blades.2. Raise the deck and secure it in the TILT-UP po-sition. Refer to CLEANING the Grass Buildupin Mower Housing in this section for deck rais-ing instructions.NOTE: PTO shaft must be disconnected be-fore checking blades for straightness.3. Check the blades for straightness by markingthe blade tip position inside the deck housing,and then rotating the opposite end of the bladeto the same position and comparing. If the dif-ference in blade tip track is more than 1/8 in.(3 mm), the blade is bent and should be re-placed.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.Mower Blade Profile For SharpeningDANGERNEVER operate cutter blades with thedeck in the raised position.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 AreaWingTip