Shroud; Air Filter System; Cleaning The Air Filter - Stihl MS 251 Instruction Manual

Shroud

Remove shroud
Move the Master Control Lever to
N
the stop position 0
Push the front hand guard forwards
N
– the saw chain is blocked
2
1
Loosen screws (1)
N
Remove the shroud (2)
N
Refitting the shroud
Refit the shroud and tighten the
N
screws
MS 251, MS 251 C

Air Filter System

The air filter system can be adapted to
suit different operating conditions by
installing different filters. Changing the
filter is quick and simple.
Fleece filter
1
1
Fleece filter for normal operating
N
conditions and dry work areas.
HD2 filter
HD2 filter (black filter frame, pleated
N
filter material) for extreme wintry
conditions (e.g. powder or drifting
snow) or very dusty work areas.

Cleaning the Air Filter

If there is a noticeable loss of engine
power
Remove the shroud – see "Shroud"
N
Removing the air filter
Clean away loose dirt from around
N
the filter
NOTICE
Do not use tools to remove and install
the air filter – the air filter could be
damaged in the process.
1.
2.
Turn air filter 1/4 turn
N
counterclockwise and remove in the
direction of the rear handle
Always replace a damaged filter
N
Cleaning the air filter
Knock out the filter or blow it clear
N
with compressed air from the inside
outwards
If knocking-out or blowing-out does not
suffice, or in the case of stubborn dirt or
stuck filter fabric, the filter must be
subjected to a thorough cleaning.
English
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