Stihl OILOMATIC Manual page 33

Chain and bar
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Use only special saw chain
sharpening files; the shape and cut
of standard files makes them
unsuitable for sharpening saw
chain.
The following file diameters and file
holders are recommended for each
chain pitch – irrespective of the
tooth length or type:
.
Chain
File
Sharpening kit
1)
pitch
dia.
inch /
mm /
Part No.
(mm)
(inch)
1/4
4.0
5605 007 1027
(6.35)
(5/32)
3/8 P
4.0
5605 007 1027
(9.32)
(5/32)
.325
4.8
5605 007 1028
(8.25)
(3/16)
3/8
5.2
5605 007 1029
(9.32)
(13/64)
.404
5.5
5605 007 1030
(10.26)
(7/32)
1)
consisting of file holder with round
file, flat file and filing gauge
STIHL file holder
2 3
3
30°
R
Ø5,2 mm 13/64"
30°
5605 750 4329
3/8"
10°
4
1
1
Chain pitch
2
File diameter
3
Reference line for
filing angle of 30°
4
Reference line for
filing angle of 10°
32
Select sharpening tools according
to the chain pitch.
Clamp the guide bar in position, e.g.
use a bench vise or the STIHL bar
vise.
Lock the chain – engage the chain
brake.
Rest the file holder on the top plate
and depth gauge. The side plate
and top plate cutting angles will be
automatically correct if the right file
holder is used.
Guide the file holder so that the
10°
reference marks (filing angle 30° or
10°) are parallel to the guide bar.
4
90°
Always hold the file holder and file
horizontally at right angles to the
sides of the chain links and guide
bar. Two or three firm strokes of the
file are usually enough for each
cutter.
Avoid touching the tie straps and
drive links with the file. Always file
from the inside to the outside of the
cutter, i.e. file the row of cutters
away from your body; lift the file off
the cutter on the backstroke. File
evenly and steadily to obtain a
sharp and smooth cutting edge.
Rotate the file a little at regular
intervals while filing to avoid one-
sided wear.
File all the cutters in one row and
then file the second row of cutters.
Use the same number of file strokes
and the same pressure on each
cutter to obtain cutters of identical
length. All cutters must be the same
length. Uneven cutter lengths make
the chain run roughly, cause the
bottoms of the cutters to wear at a
high rate, cause wandering in the
cut and can result in the chain
breaking. File all cutters back to the
length of the shortest cutter.
Chain and Bar Manual

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