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Specifications
Engine
STIHL single cylinder two-stroke engine
Displacement:
91.1 cc
Bore:
56 mm
Stroke:
37 mm
Engine power to
5.0 kW (6.8 bhp)
ISO 7293:
at 9,500 rpm
1)
Idle speed:
2,800 rpm
1)
to ISO 11681 +/- 50 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:
850 cc (0.85 l)
Chain Lubrication
Fully automatic, speed-controlled
reciprocating oil pump. Additional
manual oil flow control
Oil tank capacity:
400 cc (0.4 l)
44
Weight
dry, without bar and chain
MS 651:
Cutting Attachment
Actual cutting length may be less than
the specified length
Rollomatic E guide bars
Cutting lengths:
40, 45, 50, 63 cm
Pitch:
3/8"
Groove width:
1.6 mm
Nose sprocket:
11-tooth
Rollomatic ES guide bars
Cutting lengths:
40, 50, 63, 75, 80,
90 cm
Pitch:
3/8"
Groove width:
1.6 mm
Nose sprocket:
11-tooth
Cutting lengths:
50, 63, 80, 90 cm
Pitch:
404"
Groove width:
1.6 mm
Nose sprocket:
10-tooth, 12-tooth
Duromatic guide bars
Cutting lengths:
40, 45, 50, 63, 75 cm
Groove width:
1.6 mm
3/8" chains
Rapid Micro (36 RM) Type 3652
Rapid Super (36 RS) Type 3621
Pitch:
3/8" (9.32 mm)
Drive link gauge:
1.6 mm
.404" chain
Rapid Micro (46 RM) Type 3668
Rapid Super (46 RS) Type 3946
7.4 kg
Pitch:
Drive link gauge:
Chain Sprocket
7-tooth for 3/8" (rim sprocket)
Max. chain speed according
to ISO 11681:
Chain speed at maximum
power:
7-tooth for 404" (rim sprocket)
Max. chain speed according
to ISO 11681:
Chain speed at maximum
power:
Sound and vibration levels
For further details concerning
compliance with the Employers'
Directive on Vibration 2002/44/EC, see
www.stihl.com/vib
Sound pressure level L
107 dB(A)
Sound power level L
120 dB(A)
Vibration level a
Chain pitch 3/8"
Left handle:
Right handle:
.404" (10.26 mm)
1.6 mm
27.5 m/s
21.7 m/s
30.3 m/s
23.9 m/s
to ISO 22868
peq
to ISO 22868
w
to ISO 22867
hv,eq
2
6.9 m/s
2
6.9 m/s
MS 651
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