Stihl MS 170 Manual De Instrucciones página 48

English
Proper sharpening
Select sharpening tools in
N
accordance with chain pitch
Clamp guide bar if necessary
N
Block saw chain – push the hand
N
guard forward
To advance the saw chain, pull the
N
hand guard toward the handlebar:
The chain brake is disengaged.
With the Quickstop Plus chain brake
system, additionally press the
throttle trigger lockout
Sharpen frequently, removing little
N
material – two or three strokes of the
file are usually sufficient for simple
resharpening
Guide the file: horizontally (at a right
N
angle to the side surface of the
guide bar) in accordance with the
specified angle – according to the
46
markings on the file holder – rest the
file holder on the tooth head and the
depth gauge
File only from the inside outward
N
The file only sharpens on the
N
forward stroke – lift the file on the
backstroke
Do not file tie straps and drive links
N
Rotate the file a little periodically in
N
order to avoid uneven wear
To remove file burr, use a piece of
N
hardwood
Check angle with file gauge
N
All cutters must be equally long.
With varying cutter lengths, the cutter
heights also vary and cause rough
running of the saw chain and chain
breakage.
All cutters must be filed down equal
N
to the length of the shortest cutter –
ideally, one should have this done
by a servicing dealer using an
90°
electric sharpener
Depth gauge setting
The depth gauge determines the depth
to which the cutter penetrates the wood
and thus the chip thickness.
a Required distance between depth
gauge and cutting edge
When cutting softwood outside of the
frost season, the distance can be
increased by up to 0.2 mm (0.008").
Chain pitch
Inches (mm)
1/4 P (6.35)
1/4 (6.35)
3/8 P (9.32)
0.325 (8.25)
3/8 (9.32)
0.404 (10.26) 0.80
Lowering the depth gauges
The depth gauge setting is lowered
when the cutter is sharpened.
Check the depth gauge setting after
N
each sharpening
1
a
Lay the appropriate file gauge (1)
N
for the chain pitch on the saw chain
and press it against the cutter to be
checked – if the depth gauge
protrudes past the file gauge, the
depth gauge must be reworked
MS 170, MS 170 C, MS 180, MS 180 C
Depth gauge
Distance (a)
mm (Inches)
0.45 (0.018)
0.65 (0.026)
0.65 (0.026)
0.65 (0.026)
0.65 (0.026)
(0.031)
2