RedMax GZ4000 Owners Manual - Page 23
Maintenance of Saw Chain and Guide Bar
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10. Maintenance of Saw Chain and Guide Bar F36 ■ SAW CHAIN WARNING It is very important for smooth and safe operation to keep the cutters always sharp. Your cutters need to be sharpened when: • Sawdust becomes powder-like. • You need extra force to saw in. • The cut way 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 your chain. Chain type: File size: 91VG 5/32 in (4.0mm) Place your file on the cutter and push straight F37 forward. Keep the file position as illustrated. (F36) After every cutter has been set, check the depth gauge and file it to the proper level as illustrated. (F37) WARNING Be sure to round off the front edge to reduce the chance of kickback or tie-strap breakage. (1) Appropriate gauge checker (2) Make the shoulder round (3) Depth gauge standard 23