GB
- Sharp edge angle (30°)
H
- Breast angle (85°)
- Sharpness depth (0.65 mm)
- Round file diameter (4.0 mm)
Deviations from the measure-
ment data of the cutting geom-
etry can lead to an increase of
the spring-back slope of the
machine. Increased danger of
accident!
Special tools are necessary for sharpen-
ing the chain, which guarantee that the
cutting edges are sharpened at the cor-
rect angle and to the correct depth. For
the inexperienced user of chainsaws,
we recommend to have the saw chain
sharpened by a specialist or a specialist
workshop. If you think yourself capable of
sharpening the chain, you can acquire the
special tools in the specialist trade.
1. Switch the saw off and unplug it
I
from the mains.
2. Remove the saw chain (refer
to the section on operating
the saw). The chain should be
well-tensioned to ensure proper
sharpening.
3. For the sharpening, a round file
with 4.0 mm diameter is neces-
sary.
Other diameters damage the
chain and can lead to danger
during work!
4. Sharpen only from the inside to
the outside. Guide the file from
the inner side of the cutting teeth
to the outer side. Lift the file
when you are withdrawing it.
176
5. Sharpen first the teeth on one
side. Turn the saw around and
sharpen the teeth of the other
side.
6. The chain is worn and must be
replaced by a new saw chain if
only approx. 4 mm of the cutting
teeth is remaining.
7. After the sharpening, all cutting
elements must now be equal in
length and width.
8. After every third sharpening, the
sharpness depth (depth limita-
tion) must be checked and the
height filed with the aid of a flat
file. The depth limitation should be
set back about 0.65 mm from the
cutting tooth. After the setting
back of depth limitation, round it
off a little at the front.
Adjusting the chain tension
The adjustment of the chain tension is de-
scribed in the chapter: Starting operation,
tensioning chainsaw.
•
Switch off the saw and pull out the
power plug.
•
Check the chain tension regularly and
re-adjust this as often as possible.When
the saw chain is tensioned with 9 N
(approx. 1 kg), the gap between the
saw chain and the guide rail may not
be more than 2 mm.
Starting up a new saw chain
In the case of a new chain, the tensioning
force decreases after some time. There-
fore you must re-tension the chain after
the first 5 cuts and at longer intervals after
this.