Parkside PGHSA 12 C3 Traduction Des Instructions D'origine page 43

Sharpening the saw chain
An incorrectly sharpened
saw chain increases the
danger of spring-back! Use
cut-protection gloves when you are
handling the chain or the chain bar.
A sharp chain guarantees an opti-
mal cutting performance. It eats
effortlessly through the wood and leaves
large, long wooden chips. A saw chain is
blunt if you have to press the cutting equip-
ment through the wood and the wooden
chips are very small. In the case of a very
blunt saw chain, no chip cuttings result at
all, only sawdust.
• The sawing parts of the chain are the
cutting elements, which consist of a cut-
ting tooth and a depth limiting projec-
tion. The vertical separation distance
between these two determines the
sharpness depth.
• The following values must be noted in
sharpening the cutting teeth:
- Sharp edge angle (30°)
- Breast angle (85°)
- Apex angle (60°)
- Sharpness depth (0.65 mm)
- Round file diameter (4.0 mm)
Deviations from the measure-
ment data of the cutting
geometry can lead to an increase
of the spring-back slope of the ma-
chine. Increased danger of accident!
Special tools are necessary for sharpening
the chain, which guarantee that the cutting
edges are sharpened at the correct angle
and to the correct depth. For the inexperi-
enced user of chainsaws, we recommend
to have the saw chain sharpened by a spe-
cialist or a specialist workshop. If you are
familiar with the sharpening of the chain,
you can purchase the tools, for example
from Parkside (e.g. chain sharpener).
1. The chain should be well-tensioned
to ensure proper sharpening.
2. 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!
3. Sharpen only from the inside to the out-
side. Guide the file from the inner side
of the cutting teeth to the outer side. Lift
the file when you are withdrawing it.
4. Sharpen first the teeth on one side. Turn
the saw around and sharpen the teeth
of the other side.
5. The chain is worn and must be re-
placed by a new saw chain if only
approx. 4 mm of the cutting teeth is
remaining.
6. After the sharpening, all cutting ele-
ments must now be equal in length and
width.
7. After every third sharpening, the sharp-
ness depth (depth limitation) 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.
GB MT
43