8. Maintenance of Saw Chain and Guide Bar
Saw Chain
It is very important for smooth and safe operation to always keep the
cutters sharp.
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The cutters need to be sharpened when:
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Sawdust
becomes powder-like.
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You need extra force to saw in.
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The cut path dose not go straight
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Vibration increases.
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Fuel consumption increases.
Cutter setting standards:
Be sure to wear safety gloves.
Before filing:
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Make sure the saw chain is held securely
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Make sure the engine is stopped.
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Use a round file of proper size for the chain.
Chain type:
91VG l 25AP/K1
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.
Be sure to round off
the front edge to reduce the chance of kickback
or
tie-strap breakage.
