Poulan PP4218A Instruction Manual - Page 16

Replace guide bar when the groove is worn, the guide bar is bent or cracked, or when excess heating or burring of the rails occurs. If replacement is necessary, use only the guide bar specified for your saw in the repair parts list or on the decal located on the chain saw. CHECK FUEL MIXTURE LEVEL S See FUELING ENGINE under the OP- ERATION section. LUBRICATION Air Filter Cover Bar Oil Fill Cap Cylinder Cover Air Filter S See GUIDE BAR AND CHAIN OIL under the OPERATION section. INSPECT AND CLEAN UNIT AND DECALS S After each use, inspect complete unit for loose or damaged parts. Clean the unit and decals using a damp cloth with a mild detergent. S Wipe off unit with a clean dry cloth. CHECK CHAIN BRAKE See CHAIN BRAKE in the OPERATION section. CLEAN AIR FILTER CAUTION: Do not clean filter in gasoline or other flammable solvent to avoid creating a fire hazard or producing harmful evaporative emissions. Cleaning the air filter: A dirty air filter decreases the life and performance of the engine and increases fuel consumption and harmful emissions. Always clean your air filter after 10 tanks of fuel or 5 hours of operation, whichever comes first. Clean more frequently in dusty conditions. A used air filter can never be completely cleaned. It is advisable to replace your air filter with a new one after every 50 hours of operation, or annually, whichever comes first. 1. Loosen 3 screws on cylinder cover. 2. Remove cylinder cover. 3. Remove air filter cover and air filter. 4. Clean the air filter using hot soapy water. Rinse with clean cool water. Air dry completely before reinstalling. 5. Reinstall air filter and air filter cover. 6. Reinstall cylinder cover and 3 screws. Tighten securely. INSPECT MUFFLER AND SPARK ARRESTING SCREEN As the unit is used, carbon deposits build up on the muffler and spark arresting screen, and must be removed to avoid creating a fire hazard or affecting engine performance. Replace the spark arresting screen if breaks occur. Spark Exhaust Arresting Outlet Screen Cover Muffler Nut CLEANING THE SPARK ARRESTING SCREEN Cleaning is required every 25 hours of operation or annually, whichever comes first. 1. Loosen and remove the nut from the ex- haust outlet cover. 2. Remove the exhaust oulet cover. 3. Remove spark arresting screen. Handle screen carefully to prevent damage. 4. Clean the spark arresting screen gently with a wire brush. Replace screen if breaks are found. 5. Replace any broken or cracked muffler parts. 6. Reinstall spark arresting screen, exhaust outlet cover, and nut. Tighten nut securely. REPLACE SPARK PLUG The spark plug should be replaced each year to ensure the engine starts easier and runs better. Ignition timing is fixed and nonadjustable. NOTE: This spark ignition system complies with the Canadian standard ICES- 002. 1. Loosen 3 screws on cylinder cover. 2. Remove the cylinder cover. 3. Pull off the spark plug boot. 4. Remove spark plug from cylinder and discard. 16