Stihl MS 390 User Manual

24 MS 290, MS 310, MS 390
: Remove spark arresting screen
(1), if fitted. Clean the screen or fit
a new one if necessary
: Remove the muffler (2).
VA
209RA022
2
1
: Remove the gasket (1).
VA
209RA023
1
MS 390 (US version only)
: Remove the exhaust gasket (1).
VA
209RA024
1
: Remove the screws (arrows)
sideways from the flange.
Remove screw (1) as follows:
– Remove the shroud, b 6.4
– Remove the screw sideways
VA
209RA025
1
from the flange.
Install in the reverse sequence.
Install new gaskets.
: Install the muffler (1), making
sure the conical spring washers
(2) are fitted correctly as shown.
: Use new nuts (3) and tighten
them down firmly, b 3.5.
209RA199
3
VA
2
1

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)