Poulan HD145H42H User Manual - Page 18

CUSTOMER RESPONSIBILITIES AIR FILTER (See Fig. 14A) Your engine will not run properly using a dirty air filter. 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 knob(s) and cover. TO SERVICE PRE-CLEANER • Slide foam pre-cleaner off cartridge. • Wash it in liquid detergent and water. • Squeeze it dry in a clean cloth. • Saturate it in engine oil. Wrap it in clean, absorbent cloth and squeeze to remove excess oil. If very dirty or damaged, replace pre-cleaner. • Reinstall pre-cleaner over cartridge. Reinstall cover and secure with knob(s). TO SERVICE CARTRIDGE • Remove cartridge nut. • 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. If very dirty or damaged, replace cartridge. • Reinstall cartridge, nut, precleaner, cover and secure with knob(s). 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. COVER KNOB COVER CARTRIDGE NUT FOAM PRE-CLEANER PAPER CARTRIDGE ENGINE OIL FILTER (See Fig. 14B) Replace the engine oil filter every season or every other oil change if the tractor is used more than 100 hours in one year. • Unscrew old filter by turning counterclockwise. Use a suitable container to catch oil. • Apply a thin coating of new engine oil to rubber gasket on replacement oil filter. • Install replacement oil filter by turning clockwise until rubber gasket contacts mounting surface, then tighten filter an additional 1/2 to 3/4 turn. • Fill crankcase with new oil (See "TO CHANGE EN- GINE OIL" in this section of this manual). For approximate capacity see PRODUCT SPECIFICATIONS" on page 3 of this manual. • Start engine and check for oil leaks. Correct any leaks before placing engine into full operation. FIG. 14B OIL FILTER ENGINE COOLING FINS (See Fig. 15) Remove any dust, dirt or oil from engine, cooling fins to prevent engine damage from overheating. • Remove screws from blower housing and lift housing and dipstick tube assembly off engine. • Cover oil fill opening to prevent entry of dirt. • Use compressed air or stiff bristle brush to thoroughly clean engine cooling fins. • To reassemble, reverse above procedure. SCREWS BLOWER HOUSING SCREWS BASE FIG. 14A CLEAN AIR SCREEN (See Fig. 14A) Air screen must be kept free of dirt and chaff to prevent engine damage from overheating. Clean with a wire brush or compressed air to remove dirt and stubborn dried gum fibers. DIPSTICK TUBE ASSEMBLY AIR SCREEN 0 ENGINE COOLING FINS SPARK PLUG 18 FIG. 15