47
MS 381
English
Engine
STIHL single cylinder two-stroke engine
1)
Weighted equivalent level includes
idling, full load and racing with the
same duration of exposure
2)
Low compression engine
Magneto ignition system,
electronic
Spark plug
(suppressed)
Bosch WSR 6 F, NGK BPMR 7 A,
Electrode gap: 0.5 mm
Carburetor
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:
0.68 l (680 cm
3
)
Oil tank capacity:
0.36 l (360 cm
3
)
Weight (without cutting attachment)
6.6 kg
Cutting Attachment:
Guide bars
Rollomatic, Duromatic
Cutting lengths
Rollomatic 37, 40, 45, 50, 55 and 63 cm
Duromatic 37, 40, 45, 50, 55 and 63 cm
Oilomatic chain
9.32 mm (3/8") Rapid
Drive link gauge: 1.6 mm
Chain sprockets
7 and 8-tooth rim sprockets
7-tooth spur sprocket
Chain lubrication
Fully automatic, speed-controlled rotary
piston oil pump. Additional manual oil
flow control
File holder with round file
Filing gauge
Reference gauges
STIHL lubricating grease
STIHL filler nozzle for STIHL
canisters
helps avoid spills and overfilling during
refueling.
Contact your STIHL dealer for more
information on these and other special
accessories.
Displacement
72.2 cm
3
Bore
52 mm
Stroke
34 mm
MS 381
Engine power
to ISO 7293
3.9 kW
(5.3 HP)
MS 381 N
2)
Engine power
to ISO 7293
3.6 kW
(4.9 HP)
Idle speed 2,
4
00 rpm
Maximum permissible
engine speed with bar
and chain
12,500 rpm
Sound pressure level
L
peq
to ISO 22868
1)
102,3
dB
(A)
Sound power level
L
weq
to ISO 9207
1)
113,9 dB (A)
Vibration
measurement a
eq
to ISO 7505
1)
Left handle
5.2 m/s
2
Right handle
7.1 m/s
2
Specifications
Special Accessories