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GENERAL SAFETY PRECAUTIONS
16 – English
Chain drive sprocket
The clutch drum is ﬁtted with one of the following drive
A Spur sprocket (the chain sprocket is welded on the
B Rim sprocket (replaceable)
Regularly check the degree of wear on the drive sprocket.
Replace if wear is excessive. Replace the drive sprocket
whenever you replace the chain.
Needle bearing lubrication
Both versions of sprockets have a needle bearing on the
drive shaft, which has to be greased regularly (once a
week). CAUTION! Use only high quality bearing grease or
Checking wear on cutting equipment
Check the chain daily for:
• Visible cracks in rivets and links.
• Whether the chain is stiff.
• Whether rivets and links are badly worn.
Replace the saw chain if it exhibits any of the points
We recommend you compare the existing chain with a
new chain to decide how badly the existing chain is worn.
When the length of the cutting teeth has worn down to
only 0.16 inch (4 mm) the chain must be replaced.
• Whether there are burrs on the edges of the bar.
Remove these with a ﬁle if necessary.
• Whether the groove in the bar has become badly
worn. Replace the bar if necessary.
• Whether the tip of the bar is uneven or badly worn. If
a hollow forms on the underside of the bar tip this is
due to running with a slack chain.
• To prolong the life of the bar you should turn it over
WARNING! Most chain saw accidents
happen when the chain touches the
Wear personal protective equipment. See
instructions under the heading Personal
Do not tackle any job that you feel you
are not adequately trained for. See
instructions under the headings Personal
protective equipment, How to avoid
kickback, Cutting equipment and General
Avoid situations where there is a risk of
kickback. See instructions under the
s safety equipment.
Use the recommended protective
equipment and check its condition. See
instructions under the heading General
Check that all the chain saw safety
features are working. See instructions
under the headings General working
instructions and General safety