Stihl MS 390 User Manual

38 MS 290, MS 310, MS 390
: Disconnect the short circuit wire
(1) and pull it out of the retainer
(arrow).
: Remove the screw (2) with
washer.
209RA114
VA
1
2
– Pull the ignition module
downwards.
: Push the grommet (1) upwards.
: Unscrew the ignition lead (2) from
the module.
209RA115
VA
2
1
– Remove the ignition module.
If the ignition lead or spark plug boot
is damage, install new parts,
b 7.2
: If necessary, pull the retainer (1)
out of the ignition module.
Install in the reverse sequence.
209RA116
1
VA
: Fit screw (1) with ground wires
but do not tighten down yet.
: Fit screw (2) with washer but do
not tighten down yet.
: Push short circuit wire into wire
retainer (arrow).
209RA117
VA
1
2
: Rotate the flywheel until its raised
edge (arrow) is in line with the
ignition module.
209RA118
VA
: Loosen the screws (2).
: Slide the setting gauge (1)
1111 890 6400 between the arms
of the ignition module and the
raised edge of the flywheel.
– Press the ignition module against
209RA119
VA
2
1
the setting gauge.

Stihl MS 390 Specifications

General

Engine Displacement	64.1 cc
Chain Pitch	3/8"
Weight	6.2 kg
Guide Bar Lengths	40 to 50 cm
Fuel Capacity	0.68 l (23.0 oz)