2. If the saw chain lubrication is correct, you see a clear
line of oil on the surface after 1 minute.
3. If the saw chain lubrication does not operate
correctly, do a check of the guide bar. Refer to
a check of the guide bar on page 31
for
instructions. Speak to your servicing dealer if the
maintenance steps does not help.
To do a check of the chain drive
sprocket
The clutch drum has a spur sprocket (A) or a rim
sprocket (B). A spur sprocket has the chain sprocket
permanently attached to the clutch drum. A rim sprocket
can be replaced.
A
B
• Regularly examine the chain drive sprocket for wear.
Replace the chain drive sprocket if there is too much
wear.
• Replace the chain drive sprocket when you replace
the saw chain.
To lubricate the needle bearing
Note: Lubricate the needle bearing weekly.
1. Pull the front hand guard rearward to disengage the
chain brake.
2. Loosen the bar nuts and remove the clutch cover.
Note: Some models have only one bar nut.
3. Put the product on the side with the clutch up.
4. Use a grease gun to put engine oil in the center of
the clutch as it rotates.
To examine the cutting equipment
1. Make sure that there are no cracks in rivets and links
and that no rivets are loose. Replace if it is
necessary.
2. Make sure that the saw chain is easy to bend.
Replace the saw chain if it is rigid.
3. Compare the saw chain with a new saw chain to
examine if the rivets and links are worn.
4. Replace the saw chain when the longest part of the
cutting tooth is less than 4 mm/0.16 in. Also replace
the saw chain if there are cracks on the cutters.
To do a check of the guide bar
1. Make sure that the oil channel is not blocked. Clean
if it is necessary.
594 - 002 - 08.06.2020
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