21 Specifications
21.1
Engine
Single cylinder two-stroke engine
Displacement:
24.1 cc
Bore:
35 mm
Stroke:
25 mm
Engine power to ISO 8893: 0.9 kW (1.2 bhp) at
8,500 rpm
Idle speed:
2,800 rpm
Cut-off speed (rated):
9,800 rpm
21.2
Ignition System
Electronic magneto ignition
Spark plug (resistor type): NGK CMR6H
Electrode gap:
0.5 mm
21.3
Gearbox
Gear ratio:
11:1
Forkhead stroke:
20 mm
Strokes per minute at n =
9,800 rpm
1)
:
1,820 strokes/min
21.4
Fuel system
All position rotary valve carburetor with integral
fuel pump
Fuel tank capacity:
540 cc (0.54 l)
21.5
Weight
Complete machine, dry:
5.4 kg
21.6
Overall length
Complete machine:
2310 mm
21.7
Features
C
Convenience features
21.8
Noise and Vibration Data
Noise and vibration data are measured at idling
and maximum rated speed in a ratio of 1:6.
For further details on compliance with Vibration
Directive 2002/44/EC visit www.stihl.com/vib.
Attachment: Rake with tines
21.8.1
Sound pressure level L
p
to ISO 11201
90 dB(A)
21.8.2
Sound power level L
w
to ISO 3744
105 dB(A)
21.8.3
Vibration level a
hv,eq
to ISO 20643
Left handle:
5.8 m/s
2
Right handle:
6.4 m/s
2
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.
21.9
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.
21.10 Exhaust Emissions
The CO
2
value measured in the EU type approval
procedure is specified at www.stihl.com/co2.
The measured CO
2
value was determined on a
representative engine in accordance with a
standardized 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.
22 Maintenance and Repairs
Users of this machine may only carry out the
maintenance and service work described in this
user manual. All other repairs must be carried
out by a servicing dealer.
STIHL recommends that you have servicing and
repair work carried out exclusively by an author‐
ized STIHL servicing dealer. STIHL dealers are
regularly given the opportunity to attend training
courses and are supplied with the necessary
technical information.
When repairing the machine, only use replace‐
ment parts which have been approved by STIHL
for this power tool or are technically identical.
Only use high-quality replacement parts in order
1)
Movement of rake in one direction is 1 stroke. The back and forth movement of the rake counts as
two strokes (= 2 working strokes).
English
21 Specifications
22
0458-422-0121-D