a) Do a check of the oil channel in the guide bar to
make sure that it is not blocked. Clean if
necessary.
b) Do a check of the groove in the edge of the guide
bar to make sure that it is clean. Clean if
necessary.
c) Make sure that the bar tip sprocket turns freely
and that the lubricating hole in the guide bar tip
sprocket is not blocked. Clean and lubricate if
necessary.
4. If the saw chain lubrication does not work after
following the steps above, speak to your servicing
dealer.
Chain drive sprocket
The drive system has a drive sprocket.
Do the following maintenance on the chain drive
sprocket:
•
Regularly do a check of the degree of wear on the
drive sprocket. Replace the chain drive sprocket if
there is too much wear.
•
Replace the drive sprocket when you replace the
saw chain.
30
To examine the cutting equipment
for wear
Do a check of the saw chain daily.
1. Make sure that there are no cracks in rivets and
links. Replace if necessary.
2. Examine if the saw chain is rigid. Replace if
necessary.
3. Compare the saw chain with a new saw chain to
examine if the rivets and links are worn. Replace the
saw chain when the length of the cutting teeth has
worn down to 4 mm/ 0.16 in.
To do a check of the guide bar
Do a check of the guide bar regularly.
1. Examine if there are burrs on the edges of the guide
bar. Remove burrs with a file if necessary.
2. Examine the groove in the guide bar for wear.
Replace the guide bar if necessary.
3. Examine if the guide bar tip is rough or very worn.
Hollow shapes on the guide bar tip is a result of bad
saw chain tension.
958 - 001 - 16.11.2018