Be careful not to allow dirt to enter the engine. • Refill engine with oil. See “CHECK ENGINE OIL LEVEL” in the Operation section of this manual. AIR FILTER (See Fig. 20) Your engine will not run properly using a dirty airfilter. Clean the foam pre-cleaner after every 25 hours of operation or every season. Service paper cartridge every 100 hours of operation or every season, whichever occurs first. Service air cleaner more often under dusty conditions. * Remove cover screw and cover. TO SERVICE PRE-CLEANER * Remove foam pre-cleaner from air cleaner cover. * Wash it in liquid detergent and water. * Squeeze it dry in a clean cloth. * If very dirty or damaged, replace pre-cleaner. * Reinstall pre-cleaner into air cleaner cover. * Reinstall cover and secure screw. TO SERVICE CARTRIDGE * Carefully remove cartridge to prevent debris from entering carburetor. Clean base carefully to prevent debris from entering carburetor. * Clean cartridge by tapping gently on flat surface. Ifvery dirty or damaged, replace cartridge. * Reinstall cartridge, cover with pre-cleaner and secure with screw. IMPORTANT: PETROLEUM SOLVENTS, SUCH AS KEROSENE, ARE NOT TO BE USED TO CLEAN THE CARTRIDGE. THEY MAY CAUSE DETERIORATION OF THE CARTRIDGE. DO NOT OIL CARTRIDGE. DO NOT USE PRESSURIZED AIR TO CLEAN OR DRY CARTRIDGE. COOLING SYSTEM (See Fig. 21) Your engine is air cooled. For proper engine performance and long life keep your engine clean. • Clean air screen frequently using a stiff-bristled brush. • Remove blower housing and clean as necessary, • Keep cylinder fins free of dirt and chaff. FIG. 19 13 CUSTOMER RESPONSIBILITIES FIG. 21 MUFFLER Do not operate tiller without muffler. Do not tamper with exhaust system. Damaged mufflers or spark arresters could create a fire hazard, inspect periodically and replace if necessary, if your engine is equipped with a spark arrester screen assembly, remove every 50 hours for cleaning and inspection. Repiace if damaged. SPARK PLUG Replace spark plugs at the beginning of each tilling season orafter every 50 hours of use, whichever comes first. Spark plug type and gap setting is shown in “PRODUCT SPECIFICATIONS” on page 3 of this manual. TRANSMISSION Once a season, lubricate the right hand side gear case grease fitting with oz. of EP #1 grease. CLEANING Do not clean yourtillerwhen the engine and transmission are hot. We do not recommend using pressurized water (garden hose, etc.) to clean your unit unless the gasket area around the transmission and the engine muffler, air filter and carburetor are covered to keep water out. Water in engine will shorten the useful life of your tiller. • Clean engine, wheels, finish, etc. of all foreign matter. • Keep finished surfaces and wheels free of ail gasoline, oil, etc. • Protect painted surfaces with automotive type wax. SERVICE AND ADJUSTMENTS A CAUTION: Disconnect spark plug wire from spark plug and place wire where it cannot come into contact with plug. TILLER TO ADJUST HANDLE HEIGHT (See Fig, 22) Select handle height best suited for your tilling conditions. Handle height will be different when tiller digs into soii. • First loosen handle lock lever. • Handle can be positioned at different settings between “HIGH” and “LOW” positions. • Retighten handle lock lever securely after adjusting. TIRE CARE A CAUTION: When mountingtires, unless beads are seated, overinfiation can cause an explosion. • Maintain 20 PSI (1.4 kg/cm2) of tire pressure. If tire pressures are not equal, tiller will pull to one side. • Keep tires free of gasoline or oil which can damage rubber. TO REMOVE WHEEL (See Fig. 23) • Place blocks under transmission to keep tiller from tipping. • Remove hairpin clip and clevis pin from wheel. • Remove wheel and tire. • Repairtireand reassemble. 14 FIG. 23 SERVICE AND ADJUSTMENTS TINE REPLACEMENT (See Figs. 24,25 and 26) A CAUTION: Tines are sharp. Wear gioves or other protection when handling tines. A badly worn tine causes your tiller to work harder and dig more shallow. Most important, worn tines cannot chop and shred organic matter as effectively nor bury it as deeply as good tines, A tine this worn needs to be replaced. WORN TINE FIG. 24 To maintain the superb tilling performance of this machine the tines should be checked for sharpness, wear, and bending, particularly the tines which are next to the transmission. If the gap between the tines exceeds 3-1 /2 inches (9 cm), they should be replaced or straightened as necessary. New tines should be assembled as shown in Fig. 28. Sharpened tine edges will rotate rearward from above. FIG. 25 FIG. 26 15 SERVICE AND ADJUSTMENTS TO REMOVE BELT GUARD (See Fig. 27) TO REPLACE GROUND DRIVE BELT (See Figs. 27 and 28) • Remove belt guard as described in “T O REMOVE BELT GUARD”. • Remove old beit by slipping off engine pulley first then remove from transmission pulley. • Place new belt in groove of transmission pulley and into engine pull...