Stihl MS 291 C User Manual

MS 261 C-M
English
47
Engine
STIHL single cylinder two-stroke engine
Ignition System
Electronic magneto ignition
Fuel System
All position diaphragm carburetor with
integral fuel pump
Chain Lubrication
Fully automatic, speed-controlled oil
pump with rotary piston. Additional
manual oil flow control
Weight
Cutting Attachment
Actual cutting length may be less than
the specified length
Rollomatic guide bars
.325" chain
Chain sprocket
Noise and Vibration Data
For further details on compliance with
Vibration Directive 2002/44/EC visit
www.stihl.com/vib.
Sound pressure level L
p
to ISO 22868
Sound power level L
w
to ISO 22868
Vibration measurement a
hv,eq
to ISO
22867
The K-factor in accordance with
Directive 2006/42/EC is 2.0 dB(A) for
the sound pressure level and sound
power level; the K-factor in accordance
with Directive 2006/42/EC is 2.0 m/s
2
for the vibration level.
REACH
REACH is an EC regulation and stands
for the Registration, Evaluation,
Authorisation and Restriction of
Chemical substances.
For information on compliance with the
REACH regulation (EC) No. 1907/2006
see www.stihl.com/reach.
Exhaust Emissions
The CO
2
value measured in the EU type
approval procedure is specified at
www.stihl.com/co2.
Specifications
Displacement: 50.2 cc
Bore: 44.7 mm
Stroke: 32 mm
Engine power to
ISO 7293:
3.0 kW (4.1 bhp)
at 10,000 rpm
Idle speed:
1)
1)
to ISO 11681 +/- 50 rpm
2,800 rpm
Spark plug (resistor
type):
Bosch WSR 6 F,
NGK BPMR 7 A
Electrode gap: 0.5 mm
Fuel tank capacity: 500 cc (0.5 l)
Oil tank capacity: 270 cc (0.27 l)
dry, without bar and chain
MS 261 C-M: 4.9 kg
MS 261 C-M with quick chain
adjuster: 5.1 kg
MS 261 C-M with handle and
carburetor heating: 5.0 kg
Cutting lengths
(.325" pitch) 32, 37, 40, 45 cm
Groove width: 1.6 mm
Nose sprocket: 11-tooth
Rapid Micro (26 RM) Type 3629
Rapid Micro 3 (26 RM3) Type 3634
Rapid Super (26 RS) Type 3639
Pitch: .325" (8.25 mm)
Drive link gauge: 1.6 mm
7-tooth for .325"
Max. chain velocity to
ISO 11681: 25,6 m/s
Chain speed at maximum
power output: 19,3 m/s
105 dB(A)
116 dB(A)
Left handle: 3.5 m/s
2
Right handle: 3.5 m/s
2

Stihl MS 291 C Specifications

General

Brand	Stihl
Model	MS 291 C
Category	Chainsaw
Language	English