Stihl MS 390 User Manual

19MS 290, MS 310, MS 390
: Remove the brake spring (1) from
the bell crank (2).
VA
209RA
013
1
2
: Pry the brake band (1) out of the
engine housing.
VA
1
209RA014
: Disconnect the brake band (1)
from the bell crank (2).
VA
1
2
209RA015
– Install a new brake band if there
are noticeable signs of wear
(large areas on inside diameter
and/or parts of outside diameter)
and its remaining thickness is
less than 0.6 mm.
Thickness of brake band must not
209RA194
VA
be less at any point.
: If the brake band is still
serviceable, use No. 120 emery
paper or emery cloth (grain size
approx. 120 µm) to clean and
roughen its friction surface
(inside diameter).
: Take the screw (1) together with
the bushing (2) out of the hand
guard.
VA
209RA016
: Remove the E-clip (arrow).
VA
135RA029
: Remove the strap from the bell
crank pivot pin (1).
: Slide the strap up and take it off
the hand guard pivot pin (2).
VA
135RA030
2 1
: Remove the washer (arrow).
VA
135RA031

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)