24 Specifications
15 Throttle trigger
16 Control handle
17 Setting lever
18 Valve lever for solution feed
19 Pleated hose
20 Harness
21 Backplate
22 Back padding
23 Protective screen
24 Air filter
# Serial number
24 Specifications
24.1
Engine
Single cylinder two-stroke engine
Displacement:
Bore:
Stroke:
Engine power to ISO 7293: 2.9 kW (3.9 bhp)
Idle speed:
24.2
Ignition System
Electronic magneto ignition
Spark plug (resistor type): NGK BPMR 7 A,
Electrode gap:
24.3
Fuel System
All position diaphragm carburetor with integral
fuel pump
Fuel tank capacity:
24.4
Blowing performance
Air velocity:
Max. air flow rate without
blower tube
Air flow rate with nozzle:
24.5
Spraying Attachment
Container capacity:
Quantity left in container:
Mesh size of filler strainer: 1 mm
Spraying distance, horizon‐
tal:
Discharge rate (horizontal,
without pressure pump,
with standard metering
knob):
24.6
Weight
Dry:
0458-450-8721-C
63.3 cc
48 mm
35 mm
3,000 rpm
Bosch WSR 6 F
0.5 mm
1700 cc (1.7 l)
90 m/s
3
1300 m
/h
3
920 m
/h
20 l
50 ml
14.5 m
0.11 – 3.28 l/min
SR 440:
Max. weight capacity of container:
SR 440:
24.7
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 see www.stihl.com/vib.
24.8
Sound pressure level L
DIN EN 15503
SR 440:
24.9
Sound power level L
DIN EN 15503
SR 440:
24.10 Vibration measurement a
DIN EN 15503
SR 440:
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
2.0 m/s
for the vibration level.
24.11 REACH
REACH is an EC regulation and stands for the
Registration, Evaluation, Authorization and
Restriction of Chemical substances.
For information on compliance with the REACH
regulation (EC) No. 1907/2006 see
www.stihl.com/reach
24.12 Exhaust Emissions
The CO
value measured in the EU type appro‐
2
val procedure is specified at
www.stihl.com/co2
in the product-specific technical data.
The measured CO
value was determined on a
2
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.
English
12.2 kg
20 kg
to
p
97 dB(A)
to
w
108 dB(A
)
hv,eq
Handle,
right
2
1.9 m/s
to
49