Stihl MS 391 Instruction Manual

MS 311, MS 391
English
31
N Push the filler cap down and twist it
clockwise until it engages.
Then the markings on filler cap and
housing will align.
N Flip the handle down.
Filler cap is now closed.
If the filler cap will not engage into the
tank housing
The base of the filler cap is rotated in
relation to the upper part.
N Look at the black alignment marks
on the top of the filler cap.
N With the filler cap in the filling neck,
twist it counterclockwise until it
drops into its seat.
N Continue to twist the filler cap
counterclockwise (approx. 1/4 turn)
– this will twist the base of the cap
into the correct position.
N While pushing down on the cap,
twist the filler cap clockwise and
close it – see section "Closing."
001BA233 KN
001BA231 KN
001BA235 KN
Left: Base of filler cap is rotated –
interior marking (1) is aligned
with the exterior marking.
Right: Base of filler cap is in the cor-
rect position – interior
marking is below the clip. It
does not align with the exte-
rior marking.
001BA241 KN
1
001BA238 KN
001BA239 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