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Chain brake
In the event of kick-back, the chain brake will be actuated via the front finger guard. The front
finger guard is pushed forwards by the back of the hand and this causes the chain brake to stop
the chain saw, or rather the motor, within 0.15 of a second.
Releasing the chain brake:
To be able to use your chain saw again, you must release the saw chain again. First, switch off
the chainsaw. Then push the front finger guard back into the vertical position until it locks in
place (figure as below). The chain brake is now fully functional again
Chain sharpening
It is highly recommended that once the chain loses its ability to cut cleanly and safely, either
replace it, have it sharpened by any garden equipment maintenance company, or sharpen it
yourself.
To sharpen the chain refer to below and proceed as follows:
Disconnect from the mains supply
Wear protective gloves.
Ensure the chain is correctly tensioned.
Engage the chain brake to lock the chain on the bar.
Use a round file (available from all good garden equipment companies) whose diameter is
1.1 times the cutting tooth depth.
File at an angle perpendicular to the bar, and 38° to the direction of travel.
File each tooth from inside towards outside only.
Sharpen each tooth equally by using the same number of strokes.
Check the safety depth gauge height every 5th-chain sharpening.
If the depth gauges are also trimmed it is essential that the original profile be restored.
Use a depth gauge measuring instrument to check the height of the depth gauge. Depth
gauge measuring jigs are available from most reputable tool merchants.(see figure as
below)
.
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