Specifications - Stihl SR 420 Instruction Manual

Specifications

Engine
Single cylinder two-stroke engine
Displacement: 56.5 cc
Bore: 46 mm
Stroke: 34 mm
Engine power to
ISO 7293: 2.6 kW (3.5 bhp)
Idle speed: 3,100 rpm
Engine/blower speed
during operation: 7,500 rpm
Ignition System
Electronic magneto ignition
Spark plug (resistor Bosch WSR 6 F,
type): NGK BPMR 7 A
Electrode gap: 0.5 mm
Fuel System
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity: 1500 cc (1.5 l)
Blowing Performance
Air velocity: 101 m/s
Max. air flow rate
without blower tube 1260 m
Air flow rate with
nozzle: 750 m
SR 420
Spraying Attachment
Container capacity:
Quantity left in
container:
Mesh size of filler
strainer:
Discharge rate (with -
out pressure pump,
infinitely variable):
Spraying distance,
horizontal:
Weight
Dry:
Max. operating weight
(fueled and filled)
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/
Sound pressure level L
SR 420:
Sound power level L
3
/h
SR 420:
3
/h
Vibration measurement a
ISO 8662
13 l
0.1 l
SR 420:
1 mm
The K - factor in accordance with
Directive 2006/42/EC is 2.5 dB(A) for
the sound pressure level and sound
0.12 – 1.81 l/min power level; the K - factor in accordance
with Directive 2006/42/EC is 2.0 m/s
for the vibration measurement.
12 m
REACH
REACH is an EC regulation and stands
11.1 kg
for the Registration, Evaluation,
25.2 kg
Authorisation and Restriction of
Chemical substances.
For information on compliance with the
REACH regulation (EC) No. 1907/2006
see www.stihl.com/reach.
to DIN 11201
peq
101 dB(A)
to DIN 3744
weq
113 dB(A)
English
to
hv,eq
Handle,
right
2
2.3 m/s
2
27