Poulan PR5020 Owner Manual - Page 14

CHECK FOR LOOSE FASTENERS AND PARTS • Bar Nuts • Chain • Muffler • Cylinder Shield • Air Filter • Handle Screws • Vibration Mounts • Starter Housing • Front Hand Guard CHECK FUEL MIXTURE LEVEL See FUELING ENGINE under the OPERATION section. LUBRICATION See GUIDE BAR AND CHAIN OIL under the OPERATION section. INSPECT AND CLEAN THE UNIT AND DECALS After each use, inspect complete unit for loose or damaged parts. Clean the unit and decals using a damp cloth with a mild detergent. Wipe off unit with a clean dry cloth. CHECK CHAIN SHARPNESS A sharp chain makes wood chips. A dull chain makes a sawdust powder and cuts slowly. See CHAIN SHARPENING. CHECK THE CHAIN BRAKE See CHAIN BRAKE in the OPERATION section. GUIDE BAR Conditions which require guide bar maintenance: • Saw cuts to one side or at an angle. • Saw has to be forced through the cut. • Inadequate supply of oil to bar/chain. Check the condition of guide bar each time chain is sharpened. A worn guide bar will damage the chain and make cutting difficult. After each use, ensure ON/STOP switch is in the STOP position, then clean all sawdust from the guide bar and sprocket hole. To maintain guide bar: 1. Move ON/STOP switch to STOP. 2. Loosen and remove bar nuts and clutch cover. Remove bar and chain from saw. 3. Clean the oil holes (A) and bar groove (B). CLEAN AIR FILTER aa WARNING: Do not clean filter in gasoline or other flammable solvent to avoid creating a fire hazard or producing harmful emissions. 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 knob on air filter cover. Remove air filter cover. 2. Press down on wire clamp to release air filter. Remove air filter. 3. Clean the air filter using hot soapy water. Rinse with clean cool water. Air dry completely before reinstalling. 4. Reinstall air filter and reposition wire clamp. NOTE: Ensure air filter is correctly installed and fully seated in pocket before repositioning wire clamp and reinstalling air filter cover. 5. Reinstall air filter cover. Tighten knob securely. 4. Burring of guide bar rails is a normal process of rail wear. Remove these burrs with a flat file. 5. When rail top is uneven, use a flat file to restore square edges and sides. 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 chainsaw. 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. 14