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28 Specifications
# Serial number
28 Specifications
28.1
Engine
STIHL single cylinder two-stroke engine
Displacement:
Bore:
Stroke:
Engine power to
ISO 7293:
1)
Idle speed:
28.2
Ignition System
Electronic magneto ignition
Spark plug (resistor type): Bosch WSR 6 F,
Electrode gap:
28.3
Fuel System
All position diaphragm carburetor with integral
fuel pump
Fuel tank capacity:
28.4
Chain Lubrication
Fully automatic, speed-controlled reciprocating
oil pump. Additional manual oil flow control
Oil tank capacity:
28.5
Weight
dry, without bar and chain
MS 382:
28.6
Cutting Attachment
Actual cutting length may be less than the speci‐
fied length
28.6.1
Rollomatic E guide bars
Cutting lengths:
Pitch:
Groove width:
Nose sprocket:
28.6.2
Rollomatic ES guide bars
Cutting lengths:
Pitch:
Groove width:
Nose sprocket:
1)
to ISO 11681 +/- 50 rpm
0458-562-8721-B
72.2 cc
52 mm
34 mm
3.9 kW (5.3 bhp) at
9,500 rpm
2,800 rpm
NGK BPMR 7 A
0.5 mm
680 cc (0.68 l)
360 cc (0.36 l)
6.2 kg
40, 45, 50, 63 cm
3/8"
1.6 mm
11-tooth
40, 45, 50, 63 cm
3/8"
1.6 mm
11-tooth
28.6.3
3/8" chains
Rapid Micro (36 RM) Type 3652
Rapid Super (36 RS) Type 3621
Rapid Super 3 (36 RS3) Type 3626
Pitch:
Drive link gauge:
28.6.4
Chain sprocket
7-tooth for 3/8" (rim sprocket)
Max. chain velocity to ISO 11681:
Chain speed at maximum power
output:
28.7
Noise and Vibration Data
For further details on compliance with Vibration
Directive 2002/44/EC see www.stihl.com/vib.
28.7.1
Sound pressure level L
106 dB(A)
28.7.2
Sound power level L
118 dB(A)
28.7.3
Vibration measurement a
ISO 22867
Left handle:
Right handle:
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.
28.8
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
28.9
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
English
3/8" (9.32 mm)
1.6 mm
27.5 m/s
21.7 m/s
to ISO 22868
p
to ISO 22868
w
to
hv,eq
2
5.4 m/s
2
5.4 m/s
79
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