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7. Muffler
WARNING
If you do not attach the muffler correctly, after engine starts, the muffler will be loosen and the
hightemperature exhaust gas spout. After cleaning the muffler, pay attention to fit up the muffler
according to the explanation as follows.
1. Muffler body, muffler cover and baffle will be combined correctly.
2. Be sure the gasket is not broken. If it is broken, change to the new one.
3. Before tightening the screw, rub the gross on it.
4. After making a test run, re-tighten the screw
(TORQUE: 6.9-7.8 N.m./70-80 kg-cm)
WARNING!
Right after stopping the engine, do not touch the muffler with one's bare hands. It will cause to burn
your hands. If carbon clogs between the muffler, it will cause the poor-output and the trouble in
starting. After each 100 hours, check and clean inside the muffler.
8. 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: 91PX / 25AP
File size: 5/32 in (4.0 mm)
Place the file on the cutter and push straight forward.
Keep the file position as illustrated.
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