Solo USA 280 User Manual

MS 270, MS 270 C, MS 280, MS 280 C

STIHL single cylinder two-stroke engine

The Emission Compliance Period 
referred to on the Emissions 
Compliance Label indicates the number 
of operating hours for which the engine 
has been shown to meet Federal 
emission requirements.
Category:

A = 300 hours, 
B = 125 hours, 
C = 50 hours

CARB: 

The Emission Compliance Period used 
on the CARB-Air Index Label indicates 
the terms: 
Extended = 300 hours, 
Intermediate = 125 hours, 
Moderate = 50 hours

breakerless

Spark plug (suppressed)
Bosch WSR 6 F, NGK BPMR 7 A

Electrode gap
0.02 in (0.5 mm)

Diaphragm carburetor
All position with integral fuel pump

Fuel tank capacity
1.1 US pt (0.520 l)

Fuel mixture
See "Fuel"

Chain lubrication
Fully automatic, speed-controlled 
reciprocating oil pump. Additional 
manual oil flow control.

Oil tank capacity
0.6 US pt (0.280 l)

Displacement

3.0 cu in 
(50 cm

3

)

3.0 cu in 
(50 cm

3

)

3.3 cu in 
(54.68 cm

3

)

3.3 cu in 
(54.68 cm

3

)

Bore

1.73 in 
(44.0 mm)

1.73 in 
(44.0 mm)

1.81 in 
(46.0 mm)

1.81 in 
(46.0 mm)

Stroke

1.30 in 
(32.9 mm)

1.30 in 
(32.9 mm)

1.30 in 
(32.9 mm)

1.30 in 
(32.9 mm)

Idle speed

2,800 rpm

2,800 rpm

2,800 rpm

2,800 rpm

Weight without bar and chain

11.7 lb (5.3 kg)   11.9 lb (5.4 kg) 11.7 lb (5.3 kg) 11.9 lb (5.4 kg)