RedMax GZ3500T Owners Manual - Page 17
Maintenance of Saw Chain and Guide Bar
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7. Muffler WARNING Regularly inspect the muffler for loose fastening screws, damage and rust. If you find that exhaust gas leaking remove the muffler. Remove carbon from exhaust port using a piece of wood or plastic. Make sure no carbon falls inside of the engine. 1. Removing the underside guard Confirm that the chain break is released and remove the chain cover. Next, remove the screws of the recoil case and the screws of the chain catcher. Draw the underside guard out in the horizontal direction and remove it from the pin of the engine case in the downward direction. Chain cover Underside guard Chain catcher 2. Removing the muffler Remove the screws and nuts attaching the muffler and remove the muffler. Muffler GZ3500T 3. Removing the spark arrester Lift up the claw of the guide muffler to take it off in the upward direction, and remove the arrester. Guide muffler Spark arrester WARNING U Right after stopping the engine, do not touch the muffler S with one's bare hands. It will cause to burn your hands. If carbon clogs between the muffler, it will cause poor-output and the trouble in starting. After each 100 hours, check and clean inside the muffler. 8. Spark arrester The spark arrester is installed to prevent that burnt carbon is discharged from the muffler tail. Regularly clean it with a wire brush or a similar tool to remove the carbon. NOTE Never use a muffler if the spark arrester is missing or defective. 9. Exhaust port Remove the muffler, insert a screwdriver into the vent, and wipe away any carbon buildup after every 100 hours of use. Wipe away any carbon buildup on the muffler exhaust vent and the clean cylinder exhaust port at the same time. 10. Maintenance of Saw Chain and Guide Bar ■ Saw Chain WARNING It is very important for smooth and safe operation to always keep the cutters sharp. The cutters need to be sharpened when: • Sawdust becomes powder-like. • You need extra force to saw in. • The cut path does not go straight. • Vibration increases. • Fuel consumption increases. Cutter setting standards: WARNING Be sure to wear safety gloves. Before filing: • Make sure the saw chain is held securely. • Make sure the engine is stopped. • Use a round file of proper size for the chain. Chain type: 91VG File size: 5/32 in (4.0 mm) Place the file on the cutter and push straight forward. Keep the file position as illustrated. After each cutter has been filed, check the depth gauge and file it to the proper level as illustrated. Appropriate gauge checker Make the shoulder round .025≤ (0.64 mm) Depth gauge standard US-15