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Tensioning the chain
1. Check the chain tension by pulling the saw chain away from the guide bar. A
properly tensioned chain should have roughly 1/8 inch (3mm) of distance between
itself and the bar guide (See Fig. 5).
2. If adjustments are needed, loosen the bar adjustment locking knob one full turn.
3. To adjust the saw chain tension, rotate the chain tensioning wheel (See Fig. 6).
Rotating the wheel upwards increases the tension while rotating it downwards
decreases tension. A properly tensioned chain should have no sag (See Fig. 7)
and should only be able to be pulled 1/8 inch (3mm) away from the guide bar of
the saw.
4. Once the chain is properly tensioned, tighten the bar adjustment locking knob. Do
not over-tension the chain: this will lead to excessive wear and reduces the life of
both the bar and chain.
Note: The saw chain must be tensioned properly in order to ensure safe operation.
The chain tension is optimal if the saw chain can be lifted 1/8 inch (3mm) from the
centre of the guide bar. Since the saw chain heats up during operation, its length
can therefore fluctuate. Check the chain tension every 10 minutes of operation and
adjust as necessary, particularly for new saw chains. Slacken the saw chain after
the work is completed since it shortens when cooling down. In doing so, you can
elongate the chain's life and prevent damage.
20
Fig. 6
Fig. 5
Fig. 7
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