Instruction Manual

MS 231, MS 231 C, MS 251, MS 251 C
English
35
If there is a noticeable loss of engine
power
N Remove the shroud – see "Shroud".
N Clean away loose dirt from around
the filter.
Removing the Air Filter (round filter)
NOTICE
To avoid damaging the filter, do not use
tools for removing and installing the air
filter.
N Rotate the air filter a 1/4 turn
counterclockwise and lift it away in
the direction of the rear handle.
N Always replace a damaged filter.
Removing the Air Filter (synthetic fiber
filter)
N Squeeze both locking tabs (1) and
lift filter away.
N Always replace a damaged filter.
Cleaning the Air Filter
N Knock out the filter or blow it clear
with compressed air from the inside
outwards.
Wash the filter thoroughly if knocking it
out or blowing it clear is not sufficient to
remove stubborn dirt, or if the filter fabric
is sticky.
Washing the filter
N Wash the filter in STIHL special
cleaner (special accessory) or a
clean, non-flammable solution (e.g.
warm soapy water). Rinse the filter
from the inside outwards under a jet
of water – do not use a pressure
washer.
N Dry the filter components – do not
expose to high temperatures.
N Do not impregnate the filter with oil.
N Reinstall the air filter.
Installing the Air Filter (round filter)
N Place the air filter in position.
N Push the air filter in the direction of
the filter housing and turn it
clockwise at the same time until it
engages – the "STIHL" name must
be horizontal.
N Install the shroud – see "Shroud".
Installing the Air Filter (synthetic fiber
filter)
N Place the air filter in position.
N Push the filter towards the filter
housing until the locking tabs snap
into place.
N Install the shroud – see "Shroud".
Cleaning the Air Filter
1.
2710BA000 KN
2.
0000-GXX-0845-A0 KN
1
1
2710BA001 KN
2.
1.