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Dolmar PS-420 User Manual

Page 21

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Checking the chain tension

The tension of the chain is correct if the chain rests against

the bottom side of the guide bar and can still be easily turned

by hand.
While doing so the chain brake must be released.
Check the chain tension frequently - new chains tend to get

longer during use!
When checking the chain tension the engine must be switched

off.
NOTE:
It is recommended to use 2- chains alternatively.
In order to guarantee uniform wear of the guide bar the bar

should be turned over whenever replacing the chain.

Retightening the saw chain

Loosen the nuts (2) about one turn with the universal wrench.

Raise the tip of the guide bar a little and turn the chain tensioning

screw (4) to the right (clockwise) until the saw chain is again up

against the bottom edge of the guide bar (see circle).
While keeping the tip of the guide bar raised, tighten the nuts

(2) again with the universal wrench.