Oil Tank Cap; Fuel System; Air Filter - Stihl MS 441 Manual

13.5

Oil tank cap

– Open oil tank cap.
: Prise out nipple inside tank
(arrow).
– Examine oil tank cap, rope and
O-ring, replace if necessary.
: Press nipple into mount (arrow)
inside tank.
– Close oil tank cap.
– Perform leakage test.
MS 441, MS 441 C
14.

Fuel system

14.1

Air filter

Dirty air filters reduce engine power,
increase fuel consumption and
make starting more difficult.
The air filter should be checked if
engine power declines noticeably.
– See troubleshooting chart,
b 4.6.
– Release clamps (arrows).
: Remove carburetor box
cover (1).
1
: Unscrew twist lock (1).
– Remove air filter.
1
HD filter (black) for use in dry, very
dusty conditions.
: Pull pre-filter (1) off air filter (2).
– Examine pre-filter and air filter,
clean or replace if necessary.
– Clean pre-filter (1).
– Tap HD filter (2) clean or blow
through compressed air from the
1
inside outwards.
2
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