Stihl MS 391 Instruction Manual

MS 311, MS 391
English
30
Preparations
N Before fueling, clean the filler cap
and the area around it to ensure that
no dirt falls into the tank.
Always thoroughly shake the mixture in
the canister before fueling your
machine.
N Position the machine so that the
filler cap is facing up.
WARNING
In order to reduce the risk of fire and
other personal injury from escaping gas
vapor and fumes, remove the fuel filler
cap carefully so as to allow any pressure
build-up in the tank to release slowly
Opening
N Raise handle.
N Twist filler cap counterclockwise
(approx. 1/4 turn).
Markings on filler cap and housing must
align.
N Remove the filler cap.
Refueling
Take care not to spill fuel while fueling
and do not overfill the tank – leave
approx. 1/2" (13 mm) air space.
Closing
Handle is in an upright position:
N Position filler cap – markings on filler
cap and housing must align.
N Push the filler cap down as far as it
will go.
Fueling
001BA229 KN
001BA236 KN
001BA232 KN
001BA234 KN
001BA237 KN
001BA234 KN

Stihl MS 391 Specifications

General

Motor type	2-stroke motor
Chain gauge	1.6 mm
Chain pitch	3/8 \
Automatic oiling	Yes
Oil tank capacity	0.35 L
Fuel tank capacity	0.6 L
Engine displacement	64.1 cm³
Engine power	4.4 hp
Power source	Gasoline

Weight and Dimensions

Weight	6200 g