The engine stops while idling
► Turn the idle speed screw (LA) clockwise until
the engine runs smoothly.
Cutting attachment rotates when engine is idling
► Turn the idle speed screw (LA) counterclock‐
wise until the cutting attachment stops rotat‐
ing.
18.5 Adjusting the Throttle Cable
► Press the throttle trigger (1) and keep pressed.
► Turn screw (2) clockwise until resistance is
felt.
► Turn the screw (2) clockwise through another
half-turn.
19 Specifications
19.1 STIHL FS 261 Brushcutter
–
Displacement: 41.6 cm³
–
Engine power according to ISO 8893: 2.0
kW (2.7 hp) at 9,000 rpm
–
Idle speed : 2,800 rpm
–
Max. output shaft speed: 7210 rpm
–
Approved spark plug: NGK CMR6H from
STIHL
–
Electrode gap of the spark plug: 0.5 mm
–
Weight with empty fuel tank and without cut‐
ting attachment and deflector:
–
FS 261: 7.6 kg
–
FS 261 C: 7.8 kg
–
Length without cutting attachment: 1800 mm
–
Max. fuel tank capacity: 750 cm³ (0.75 l)
19.2 Sound Values and Vibration
Values
The K-value for the sound pressure level is
2 dB(A). The K-value for the sound power level is
2 dB(A). The K-value for vibration level is 2 m/s².
Using with a mowing head
–
Sound pressure level L
pA
measured according
to ISO 22868: 100 dB(A).
–
Sound power level L
w
measured according to
ISO 22868: 109 dB(A)
–
Vibration level a
hv
measured according to
ISO 22867:
–
Control handle: 6.1 m/s².
–
Left handle: 4.8 m/s².
Using with a metal cutting attachment
–
Sound pressure level L
pA
measured according
to ISO 22868: 99 dB(A).
–
Sound power level L
w
measured according to
ISO 22868: 109 dB(A)
–
Vibration level a
hv
measured according to
ISO 22867:
–
Control handle: 5.9 m/s².
–
Left handle: 5.0 m/s².
For information on compliance with Employers'
Vibration Directive 2002/44/EC see
www.stihl.com/vib.
19.3 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 see www.stihl.com/reach.
19.4 Exhaust Emissions
The CO
2
value measured in the EU type appro‐
val procedure is specified at www.stihl.com/co2
in the product-specific technical data.
The measured CO
2
value was determined on a
representative engine in accordance with a
standardised test procedure under laboratory
conditions and does not represent either an
explicit or implied guarantee of the performance
of a specific engine.
The applicable exhaust emission requirements
are fulfilled by the intended usage and mainte‐
nance described in this instruction manual. The
type approval expires if the engine is modified in
any way.
19 Specifications English
0458-837-0101-A 21
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