NOTE
If you start the machine with a new chain, have a test
for 2-3 minutes. After that, examine the tension again
and tighten the chain if necessary.
5.2
ADJUST THE CHAIN TENSION
Figure 10.13.14
CAUTION
Wear protective gloves if you touch the chain, bar or
areas around the chain.
1. Loosen the chain cover by turning the chain cover
knob counterclockwise.
NOTE
It is not necessary to remove the chain cover to adjust
the chain tension.
2. Turn the chain tension screw behind the bar and
chain clockwise to increase the chain tension.
3. Turn the chain tension screw counterclockwise to
decrease the chain tension.
4. When the chain is at the wanted tension, tighten the
chain cover.
5.3
SHARPEN THE CUTTERS
Sharpen the cutters if it is not easy for the chain to go
into the wood.
NOTE
We recommend that a service center, which has an
electric sharpener, perform important sharpening
work.
Figure 15-18.
1. Tensioning chain.
2. Sharpen the cutters corner with a 5/32 in. (4 mm)
diameter round file .
3. Sharpen the top plate, side plate and depth gauge
with a flat file.
4. File all the cutters to the specified angles and the
same length.
NOTE
During the process,
• Keep the file flat with the surface to be sharpened.
• Use the midpoint of the file bar.
• Use light but firm pressure when sharpening the
surface.
• Lift the file away on each return stroke.
• Sharpen the cutters on one side and then move to
the other side.
Replace the chain if:
• The length of the cutting edges is less than 5 mm.
• There is too much space between the drive links
and the rivets.
• The cut speed is slow
• Sharpening the chain many times but it does not
increase the cutting speed. The chain is worn.
5.4
GUIDE BAR MAINTENANCE
Figure 19-20.
NOTE
Make sure that it is turned over periodically to keep
symmetrical wear on the bar.
1. Lubricate the bearings on the nose sprocket (if
present) with the syringe (not included).
2. Clean the bar groove with the scraping hook (not
included).
3. Clean the lubrication holes.
4. Remove burr from the edges and level the cutters
with a flat file.
Replace the bar if:
• the groove is not fit with the height of the drive links
(which must never touch the bottom).
• the inside of the guide bar is worn and make the
chain lean to one side.
5.5
ADD THE BAR AND CHAIN
LUBRICANT
Examine the amount of oil in the machine. If the oil level
is low, add the bar and chain lubricant as follows.
IMPORTANT
Use bar and chain lubricant that is only for chains and
chain oilers.
NOTE
The machine comes from the factory without bar and
chain lubricant.
1. Loosen and remove the cap from the oil tank.
2. Put the oil into the oil tank.
3. Monitor the oil indicator to make sure that no dirt in
the oil tank while you add the oil.
4. Put the oil cap on.
5. Tighten the oil cap.
6. The whole oil tank will last for 15 - 40 minutes.
IMPORTANT
Do not use dirty, used or contaminated oil. Damage
can occur to the bar or chain.
7
English
EN
