GENERAL SAFETY PRECAUTIONS
English – 15
Chain drive sprocket
The clutch drum is fitted with one of the following drive
sprockets:
A Spur sprocket (the chain sprocket is welded on the
drum)
B Rim sprocket (replaceable)
Regularly check the degree of wear on the drive sprocket.
Replace if w
ear 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 a high-quality bearing grease or
engine oil.
See instructions under the heading Maintenance, Needle
bear
ing lubrication.
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
abo
ve.
We recommend you compare the existing chain with a
ne
w chain to decide how badly the existing chain is worn.
When the length of the cutting teeth has worn down to
only 4 mm the chain must be replaced.
Guide bar
Check regularly:
• Whether there are burrs on the edges of the bar.
Remo
ve these with a file if necessary.
• Whether the groove in the bar has become badly
w
orn. Replace the bar if necessary.
• Whether the tip of the bar is uneven or badly worn. If
a hollo
w 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
daily
.
AB
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