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E
Files and how to work with them
- Use a special round file for chains (dia. 4 mm) for sharpe-
ning the chain. Normal round files are not appropriate for
this work. See "Accessories" for the order number.
- The file should cut only when pushed forwards (arrow).
Lift the file 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.
- Always guide the file horizontally (90
o
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 breakage.
- The 85° front rake of the cutter results from the cut depth
of the round file. If the proper file is used in the right manner,
the correct front rake will be obtained automatically.
F
G
H
- 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 flat
file (H). See "Accessories" for the order number.
- Round off the front of the depth limiter (I).
- The file holder makes file guidance easier. It is marked for
the correct 30° sharpening angle (keep the marks parallel
with the chain when filing, see illustration) and limits the cut
depth to the correct 4/5 of the file diameter. See "Accesso-
ries" for the order number.
30°
4/5
I
J
Regularly inspect the bearing surfaces of the guide bar for
damage, and clean them with a suitable tool.
If the saw is used intensively it will be necessary to lubricate
the return sprocket bearings regularly (once a week). To do
this, first
thoroughly clean the 2 mm hole at the tip of the guide
bar, and then press in a small amount of multi-purpose grease.
Multi-purpose grease and grease guns are available as
accessories.
Multi-purpose grease (order no. 944 360 000)
Grease gun (order no. 944 350 000)
Cleaning the guide bar,
lubricating the sprocket nose
CAUTION:
Protective gloves must be worn.