Stihl OILOMATIC Manual page 35

3.18.4 Filing Tools
FG 1 and FG 3
Almost all chains can be sharpened
with these filing tools. They are
simply attached to the guide bar.
The file is guided in a frame-like file
holder. General operating
instructions are supplied with every
filing tool.
FG 3 filing tool: All-metal precision
manual filing tool
FG 2 filing tool (Filerite)
Almost all saw chains can be
sharpened with the FG 2 "Filerite".
The filing tool is mounted to a bench
or similar work surface. This means
that the chain has to be removed
from the saw. The FG 2 is easier to
use and more accurate than the
FG 1 or FG 3.
This tool also comes with operating
instructions.
FG 2 filing tool (Filerite): Precision
workshop filing tool
34
3.18.5 Sharpeners
HOS electric sharpener
The inclination of the grinding wheel
is not adjustable on the HOS
sharpener, i.e. it is permanently
fixed at 40° This inclination is
specifically designed for sharpening
chipper chains.
The HOS will sharpen all STIHL
chains except for square ground
and carbide-tipped chains.
USG electric sharpener
The inclination of the grinding wheel
on the USG is fully adjustable. This
means that the USG is suitable for
sharpening not only all chipper
chains (except square ground
chains) but also carbide-tipped
chains as well as hedge trimmer
blades and circular saw blades
when equipped with the appropriate
attachment.
USG universal electric sharpener
3.18.6 Checking Angles
The side plate and filing angles
should be checked from time to time
during sharpening. It is best to use
the appropriate filing gauge for this
purpose. Windows are punched in
the back of the filing gauges for
filing angles of 10°, 30° and 35°.
The side of the filing gauge has
windows or edges marked with the
angles 60°, 70°, 80°. 85° and 90° for
checking the side plate angle.
5
4
6
3
8 1 2
Filing gauge
1 75° sighting edge
2 60° sighting edge
3 80° sighting edge
4 Sighting edges for
filing angle of 30°
5 Sighting edges for
filing angle of 35°
6 Sighting edges for
filing angle of 10°
7 Cut-out for depth gauge
setting
8 Bar groove cleaner and scale
for measuring groove depth
Chain pitch Filing gauge
inch (mm) Part No.
1/4 P (6.35) 0000 893 4005
1/4 (6.35) 1110 893 4000
3/8 P (9.32) 1110 893 4000
.325 (8.25) 1110 893 4000
3/8 (9.32) 1110 893 4000
.404 (10.26) 1106 893 4000
Chain and Bar Manual
7