Stihl MS 390 User Manual

64 MS 290, MS 310, MS 390
: Hold the elbow connector (1) at
90 degrees and push it into the
pump.
– Turn the elbow connector to the
right.
VA
209RA037
1
: Make sure the guide lug on the
elbow connector engages the
recess in the oil pump.
Always install new O-rings.
– Lubricate the pump piston and
worm with grease before
VA
209RA038
installing, b 13.
Install all other parts in the reverse
sequence.
Dirty air filters reduce engine power,
increase fuel consumption and
make starting more difficult.
The air filter should be cleaned
when there is a noticeable loss of
engine power.
– Close the choke shutter.
Machines up to 2002
: Turn the twist lock (1) 90 degrees
to the left (counterclockwise)
: Remove the carburetor box cover
to the rear.
209RA203
2
VA
1
Machines from 2002
: Turn the twist lock (1) 90 degrees
to the left (counterclockwise).
: Remove the carburetor box cover
to the rear.
VA
209RA040
1
– Remove all loose dirt from
around the filter.
: Remove the prefilter (1) upwards.
VA
209RA041
1
: Unscrew the slotted nuts (1).
: Remove the air filter (2).
VA
209RA042
1
2
: Insert blade of screwdriver
between the lugs.
VA
209RA043
11. Fuel System
11.1 Air Filter

Stihl MS 390 Specifications

General

Brand	Stihl
Model	MS 390
Category	Chainsaw
Language	English