Taking Care Of The Guide Bar - Stihl MS 171 Instruction Manual

NOTICE
Always slacken off the chain again after
finishing work. The chain contracts as it
cools down. If it is not slackened off, it
can damage the crankshaft and
bearings.
Short-term storage
Wait for engine to cool down. Keep the
machine with a full tank of fuel in a dry
place, well away from sources of
ignition, until you need it again.
Long-term storage
See "Storing the machine"
MS 171, MS 171 C, MS 181, MS 181 C, MS 211, MS 211 C

Taking Care of the Guide Bar

2
1
Flip the bar – after each sharpening
N
and each time the chain is changed
– to avoid uneven wear, especially
at the sprocket nose and on the
bottom
Periodically clean the oil inlet
N
hole (1), oil outlet channel (2) and
bar groove (3)
Measure groove depth – using the
N
measuring tool on the file gauge
(special accessory) – in the area
with the greatest wear
Chain type Chain pitch
Picco
Rapid
Picco
Rapid
Rapid
If the groove is not at least this deep:
Replace guide bar
N
Otherwise the drive links will grind
against the base of the groove – the
bottoms of the cutters and the tie straps
will not lie against the bar.
3
English
Minimum
groove depth
1/4" P 4.0 mm
1/4" 4.0 mm
3/8" P 5.0 mm
3/8"; 0.325" 6.0 mm
0.404" 7.0 mm
35