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.
20.3.1
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.
20.3.2
Long-term storage
See "Storing the machine"
21 Taking Care of the Guide
Bar
3
1
2
143BA026 KN
► Turn the guide bar over – every time you
sharpen the chain and every time you replace
the chain – this helps avoid one-sided wear,
especially at the nose and underside of the
bar.
► Regularly clean the oil inlet hole (1), the oil‐
way (2) and the bar groove (3)
► Measure the groove depth – with the scale on
the filing gauge (special accessory) – in the
area used most for cutting
Chain type
Chain pitch
Minimum
groove
depth
Picco
1/4" P
4.0 mm
Rapid
1/4“
4.0 mm
Picco
3/8" P
5.0 mm
Rapid
3/8“; 0.325“
6.0 mm
Rapid
0.404“
7.0 mm
If groove depth is less than specified:
► Replace the guide bar
The drive link tangs will otherwise scrape along
the bottom of the groove – the cutters and tie
straps will not ride on the bar rails.
22 Shroud
22.1
Removing the shroud
207BA039 KN
► Use a suitable tool to open the catch by turn‐
ing it 90° to the left
► Lift off the shroud
22.2
Refitting the shroud
Install parts in reverse order.
23 Cleaning the Air Filter
23.1
If there is a noticeable loss of
engine power
► Simultaneously press the throttle trigger lock‐
out and throttle trigger and set the Master
Control lever to cold start
l
► Clean away loose dirt from around the filter
► Remove the shroud – see "Shroud"
MS 170, MS 180
207BA037 KN
MS 170 2-MIX, 180 2-MIX
English
21 Taking Care of the Guide Bar
28
0458-206-0121-C
Summary of Contents for MS 170
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