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30
D
Files and how to work with them
Use a special round le for chains (dia. 0.16" (4 mm)) for shar-
pening the chain. Normal round les are not appropriate for this
work. See „Accessories“ for the order number.
The le should cut only when pushed forwards (arrow). Lift the
le when leading it backwards.
First sharpen the shortest cutter. The length of this cutter is then
the standerd for all other cutters of the chain.
New saw teeth must be led to the exact same shape as the
used teeth, including on their running surfaces.
File depending on chain type (90° or 10° to the guide bar).
All cutters must be sharpened to the same angle, 30°. Different
angles result in a roughly, irregularly running chain, increase
wear and tear and cause chain beakage.
The 85° front rake of the cutter results from the cut depth of
the round le. If the proper le is used in the right manner, the
correct front rake will be obtained automatically.
C
E
F
After having sharpened the chain, the height of the depth limiter
must be checked by means of a chain gauge. See „Accessories“
for the order number.
Correct even the smallest excess height with a special at
le (
12). See „Accessories“ for the order number.
Round off the front of the depth limiter (13).
The le holder makes le guidance easier. It is marked for the
correct 30° sharpening angle (keep the marks parallel with the
chain when ling, see illustration) and limits the cut depth to
the correct 4/5 of the le diameter. See „Accessories“ for the
order number.
12
13
4/5
30°
Chain typ
466
Chain typ
092