Owner's Manual

MS 261, MS 261 C
English
56
Anti-Vibration System
The anti-vibration system includes a
number of anti-vibration elements
designed to reduce the
transmission of vibrations created
by the engine and cutting
attachment to the operator's hands.
(not illustrated)
EPA / CEPA
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category
Engine
STIHL single cylinder two-stroke engine
MS 261, MS 261 C
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
Recommended cutting attachments
complying with Section 5.11 of ANSI B
175.1-2000.
Observe notes on ANSI B 175.1-2000
and definition of "low kickback chain" in
chapter on "Safety Precautions and
Working Techniques".
Specifications
A = 300 hours
B = 125 hours
C = 50 hours
Displacement: 3.06 cu. in.
(50.2 cm
3
)
Bore: 1.76 in.
(44.7 mm)
Stroke: 1.26in. (32mm)
Engine power to
ISO 7293:
3.8 hp (2.8 kW)
at 9,500 rpm
Idle speed: 2,800 rpm
High speed setting
when performing
repairs (with bar and
chain): 14,000 rpm
Spark plug (resistor
type):
Bosch WSR 6 F,
NGK BPMR 7 A
Electrode gap: 0.02 in. (0.5 mm)
Fuel tank capacity: 16.9 fl.oz
(0.50 L)
Oil tank capacity: 9.1 fl.oz (0.27 L)
dry, without bar and chain
MS 261: 11.5 lbs
(5.2 kg)
MS 261 with handle and
carburetor heating:
11.9 lbs
(5.4 kg)
MS 261 C with
Easy2Start and quick
chain adjuster:
12.3 lbs.
(5.6 kg)