Stihl MS 172 User Manual

2
1
1
1
0000097430_001
► Turn the shroud locks (1) counterclockwise
until the cover (2) can be removed.
► Remove cover (2).
► Remove the chain sprocket cover.
► Use a soft brush, damp cloth or STIHL resin
solvent to clean the cylinder fins and the inside
of the shroud.
► Clean the area around the chain sprocket with
a damp cloth or STIHL resin solvent.
► Fit the cover (2).
► Turn the shroud locks (1) clockwise and
tighten them firmly.
The cover (2) is closed.
► Fit the chain sprocket cover.
15.2 Cleaning the Guide Bar and
Saw Chain
► Shut off the engine and engage the chain
brake.
► Remove the guide bar and saw chain.
2
3
3
1
0000097431_001
► Clean the oil inlet hole (1), oil port (2) and bar
groove (3) with a soft brush or STIHL resin
solvent.
► Clean the saw chain with a soft brush or
STIHL resin solvent.
► Mount the guide bar and saw chain.
15.3 Cleaning the Air Filter
► Shut off the engine and engage the chain
brake.
2
1
1
1
0000097430_001
► Turn the shroud locks (1) counterclockwise
until the cover (2) can be removed.
► Remove cover (2).
4
3
6
5
0000097432_001
► Pull the latch (3) forward and remove the air
filter (4).
► Remove the filter plate (5) from the filter frame
(6).
► Dust down the filter plate (5).
► If the air filter (4) is damaged: Install a new air
filter (4).
► From the clean side, blow off the filter plate (5)
and filter frame (6) with compressed air.
5
4
3
7
6
0000097433_001
► Insert the filter plate (5) in the filter frame (6).
► Suspend the hook (7) and insert the air filter
(4) so that the latch (3) engages with an audi‐
ble click.
► Fit the cover (2).
► Turn the shroud locks (1) clockwise and
tighten them firmly.
The cover (2) is closed.
15.4 Cleaning the Spark Plug
► Shut off the engine and engage the chain
brake.
► Allow the chainsaw to cool down.
English 15 Cleaning
24 0458-200-0121-B

Stihl MS 172 Specifications

General

Sound pressure level	100 dB(A)
Sound power level	113 dB(A)
Displacement	31.8 cc (1.9 cu in)
Saw chain pitch	3/8"
Recommended bar length	30-35 cm (12-14 in)