Stihl MS 291 User Manual

88 MS 271 C, MS 291 C
Installing
: Place the gasket (1) and pump
diaphragm (2) on the end
cover (3) so that the
contours (arrows) are in
alignment and make sure they
are held in position by the
pegs (4).
– Fit the end cover (1) from below
so that the pump diaphragm and
gasket are still held in position.
: Position the end cover (1) so that
the contour (arrow) points in the
direction of the throttle and choke
shaft levers.
2710RA337 TG
1
2
2
3
5902RA398 TG
1
– Move the end cover (1) back and
forth until its pegs engage the
holes in the carburetor body.
– Check that the pump diaphragm
and gasket are properly seated.
: Insert and tighten down the
screw (2) firmly.
– Reassemble all other parts in the
reverse sequence.
12.6.4 Levers on Throttle Shaft
– Remove the carburetor, b
12.5
– Carburetor troubleshooting,
b
3.6
: Take out the screw (1).
: Pull off the lever (2).
5902RA400 TG
1
2
5902RA401 TG
2
1
Installing
: Position the lever (2) so that its
hook engages the lever on the
choke shaft (arrows).
: Push the lever (2) onto the
throttle shaft so that it engages
the flats on the end of the
shaft (3).
: Insert and tighten down the
screw (1) firmly.
: Check operation
– lever (2) must engage
lever (4) (arrows).
– Reassemble all other parts in the
reverse sequence.
2710RA338 TG
1
2
3
4

Stihl MS 291 Specifications

General

Engine Power	2.8 kW
Displacement	55.5 cm³
Weight	5.6 kg
Vibration Level (left/right)	4.5/4.5 m/s²
Guide Bar Length	16 in to 20 in
Fuel Tank Volume	460 ml
Chain Pitch	3/8"
Fuel Capacity	500 cc