Assessments - 3, GPA: 4
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. . . . Before each use Chain sharpness . . . . Before each use For damaged parts . . Before each use For loose caps . . . . . . Before each use For loose fasteners. . . Before each use For loose parts . . . . . . Before each use Inspect and Clean: Bar . . . . . . . . . . . . . . . . Before each use Complete saw. . . . . . . After each use Air filter . . . . . . . . . . . . . Every 5 hours* Chain brake . . . . . . . . Every 5 hours* Spark arresting screen and muffler . . . . . . . . . Every 25 hours* Replace spark plug . Yearly Replace fuel filter . . . Yearly * Hours of Operation 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 engine performance and increases fuel consumption and harmful emissions. Always clean after every 5 hours of operation. S Clean the cover and the area around it to keep dirt and sawdust from falling into the carburetor chamber when the cover is removed. S Remove the parts as illustrated below. S Wash the filter in soap and water. Air dry completely before reinstalling. S Lightly oil air filter before installing to improve the efficiency of the air filter. Use 2- --cycle engine oil or motor oil (SAE 30). Squeeze excess oil from filter. S Reinstall parts. AirFilterCylinderCoverScrewsCylinderCover INSPECT MUFFLER AND SPARK ARRESTING SCREEN WARNING: The muffler on this product contains chemicals known to the State of California to cause cancer. 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. CLEANING THE SPARK ARRESTING SCREEN Cleaning is required every 25 hours of operation or annually, whichever comes first. MufflerGasketMufflerBoltsMufflerOutletGuideBackplate Bolt Cover Locknut S Loosen and remove the locknut from the bolt cover. S Remove the bolt cover. S Loosen and remove the 2 muffler bolts. Remove the muffler, muffler gasket, outlet guide and backplate. Notice the orientation of these parts for reassembling. S Locate the 2 outlet cover screws on the muffler. Loosen and remove both screws. S Remove the outlet cover. BACKVIEWOFMUFFLERMufflerSparkArrestingScreenOutletCoverScrews S Remove spark arresting screen. S Clean the spark arresting screen with a wire brush. Replace screen if any wires are broken or screen is blocked after cleaning. S Reinstall spark arresting screen. S Reinstall outlet cover and 2 screws. Ensure outlet cover and both screws are reinstalled correctly (see illustrations) to prevent damage to the saw. The exhaust outlet must face the chain brake (bar side) of the saw. Outlet Cover Exhaust Outlet Exhaust Outlet must face chain brake (bar side) of chain saw S Inspect the muffler gasket and replace if damaged. S Reinstall backplate, outlet guide, muffler gasket, and muffler using muffler bolts. Tighten until secure. S Reinstall bolt cover and locknut. Tighten securely. CARBURETOR ADJUSTMENTS Your carburetor is equipped with limiter caps. Carburetor adjustment is a complicated task. We recommend that you take your unit to an authorized service dealer. Damage will occur if you turn the needles beyond the limiter stops. BAR MAINTENANCE If your saw cuts to one side, has to be forced through the cut, or been run with an improper amount of bar lubrication it may be necessary to service your bar. A worn bar will damage your 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: S Move ON/STOP switch to the STOP position. S Loosen and remove chain brake nuts and chain brake. Remove bar and chain from saw. S Clean the oil holes and bar groove after each 5 hours of operation. 14 RemoveSawdustFromGuideBarGrooveSprocketHoleOilHolesRemoveSawdustFromGuideBarGrooveSprocketHoleOilHoles SAddlubricanttosprocketholeaftereachuse. SBurringofguidebarrailsisanormalprocessofrailwear.Removetheseburrswithaflatfile. SWhenrailtopisuneven,useaflatfiletore- storesquareedgesandsides. File Rail Edges and Sides Square Worn Groove Correct Groove Replace guide bar when the groove is worn, the guide bar is bent or cracked, or when exce ss 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. CHAIN SHARPENING Chain sharpening is a complicated task that requires special tools. We recommended you refer chain sharpening to a professional chain sharpener. IGNITION TIMING Ignition timing is fixed and nonadjustable. SPARK PLUG The spark plug should be replaced each year to ensure the engine starts easier and runs better. S Loosen 3 screws on cylinder cover. S Remove the cylinder cover. S Pull off the spark plug boot. S Remove ...