Specifications - Stihl MS 290 Instruction Manual

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Specifications

Engine
STIHL single cylinder two-stroke engine
MS 290
Displacement: 56.5 cm
Cylinder bore: 46 mm
Piston stroke: 34 mm
Engine power
according to 3.0 kW (4.1 HP) at
ISO 7293: 9500 rpm
1)
Idle speed: 2800 rpm
MS 310
Displacement: 59.0 cm
Cylinder bore: 47 mm
Piston stroke: 34 mm
Engine power
according to 3.2 kW (4.4 HP) at
ISO 7293: 9500 rpm
1)
Idle speed: 2800 rpm
MS 390
Displacement: 64.1 cm
Cylinder bore: 49 mm
Piston stroke: 34 mm
Engine power
according to 3.4 kW (4.1 HP) at
ISO 7293: 9500 rpm
1)
Idle speed: 2800 rpm
1)
to ISO 11681 +/- 50 rpm
46
Ignition system
Electronic magneto ignition
Spark plug
(suppressed):
Electrode gap:
Fuel system
3
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:
Chain lubrication
Fully automatic, speed-controlled oil
pump with reciprocating piston –
3
additional manual oil flow control
Oil tank capacity:
Weight
Dry, without cutting attachment
MS 290:
MS 310:
3 MS 390:
Cutting attachment
Actual cutting length may be less than
the specified length
Rollomatic guide bars
Bar lengths (pitch
.325"):
Cutting length 3/8"
Bosch WSR 6 F,
pitch):
NGK BPMR 7 A
Groove width:
0.5 mm
Saw chains .325"
Rapid Micro 3 (26 RM3) Type 3634
Rapid Micro (26 RM) Type 3629
Rapid Super (26 RS) Type 3639
Pitch:
3
560 cm (0.56 l)
Drive link gauge:
Saw chains 3/8"
Rapid Micro (36 RM) Type 3652
Rapid Super (36 RS) Type 3621
Rapid Super 3 (36 RS3) Type 3626
Pitch:
3
330 cm (0.33 l)
Drive link gauge:
Chain sprockets
7-tooth for 3/8" (spur chain sprocket)
Max. chain speed to
5.9 kg
ISO 11681:
5.9 kg
Chain speed at maximum
5.9 kg
power output:
7-tooth for 3/8" (rim sprocket)
Max. chain speed to
ISO 11681:
Chain speed at maximum
power output:
7-tooth for .325" (spur chain sprocket)
Max. chain speed to
ISO 11681:
32, 37, 40, 45,
50 cm
32, 37, 40, 45, 50,
63 cm
1.6 mm
0.325" (8.25 mm)
1.6 mm
3/8" (9.32 mm)
1.6 mm
27.5 m/s
21.7 m/s
27.5 m/s
21.7 m/s
27.5 m/s
MS 290, MS 310, MS 390