Walker MB (18 HP) Owner's Manual

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Contents

Walker MB (18 HP) Owner's Manual Manual pdf 47 page image

Maintenance Instructions CHECKING/SERVICING45Mower Blade Profile For SharpeningBlade 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).Drive BeltsRaise the body and inspect the condition of the two(2) drive belts after every 25 hours of operation --engine/PTO drive and ground drive. If the belts showsigns of cracking or deteriorating, the beltsshould be replaced. Refer to REPLACING/REPAIR-ING the Drive Belts in this section.Mower Deck Gearbox Oil SealsThe mower deck gearbox seals should be inspectedevery 25 hours for evidence of oil leaking; particu-larly the lower oil seal on the blade drive gear-box. This seal is protected by the trash guard on theblade hub and seal protector plate on the housing,but is still vulnerable to seal damage due to operatingin an adverse environment. The mower blade mustbe removed for inspection of the seal, so it is recom-mended to inspect the gearbox seals whenblades are removed for sharpening. If an oil leakis noted, the seal should be replaced and the gear-box assembly relubricated. Refer to Mower DeckGearbox Lubrication in this section.Spark PlugsEvery 100 hours, remove the spark plugs, inspect,clean, and reset the gap (or replace with a newplug). Clean spark plug with a wire brush. If theelectrodes are burned short or pitted, replace theplug (refer to Specifications for the proper type ofreplacement plug). Check the spark plug gap with awire-type feeler gauge and set the gap between0.028 and 0.032 in. (0.7 and 0.8 mm). Reinstall andtighten to 17 ft-lb (23 N· m). Both spark plugs should bereplaced yearly.Breaker PointsThe Briggs & Stratton engine is equipped with elec-tronic ignition. No breaker points, maintenance, oradjustments are necessary with this system. Con-tact an authorized Briggs & Stratton engine dealer incase of ignition failure.Fuel Lines and ClampsEvery year, inspect the fuel line from the tank toengine for deterioration or damage. Also, inspect thefuel line clamps for tightness. Good preventivemaintenance calls for complete replacement of fuellines and clamps every two (2) years.Wing TipDo Not Grind orSharpen on Underside30°Sharpen at Original30° AngleIntersectionWear AreaBlade Balancer