Stihl MS 280 User Manual

Online version - not for reprint
5MS 270, MS 280
3 Specifications
3.1 Engine
MS 270 MS 280
Displacement: 49.6 cm
3
54.2 cm
3
Bore: 44.0 mm 46.0 mm
Stroke: 32.6 mm 32.6 mm
Engine power to ISO 7293: 2.6 kW (3.54 HP)
at 9,500 rpm
2.8 kW (3.81 HP)
at 9,500 rpm
Max. permissible engine
speed (with bar and chain): 13,500 ± 150 rpm 13,500 ± 150 rpm
Idle speed: 2,800 rpm 2,800 rpm
Clutch: Three-shoe centrifugal
clutch without linings
Three-shoe centrifugal
clutch without linings
Clutch engages at: 3,300 rpm 3,300 rpm
Crankcase leakage test
– at gauge pressure:
– under vacuum:
60 kPa (0.6 bar)
40 kPa (0.4 bar)
60 kPa (0.6 bar)
40 kPa (0.4 bar)
3.2 Fuel System
Carburetor leakage test
at gauge pressure: 80 kPa (0.8 bar) 80 kPa (0.8 bar)
Tank vent operates
at gauge pressure: 30 kPa (0.3 bar) 30 kPa (0.3 bar)
Fuel: see owner’s manual see owner’s manual
3.3 Ignition System
Air gap between ignition
module and fanwheel: 0.20 – 0.30 mm 0.20 – 0.30 mm
Spark plug (resistor type): NGK BPMR 7A NGK BPMR 7A
Electrode gap: 0.5 mm 0.5 mm
3.4 Chain Lubrication
Fully automatic speed-controlled oil pump with rotary piston
Oil delivery rate: 10 cc/min at 10,000 rpm 10 cc/min at 10,000 rpm

Stihl MS 280 Specifications

General

Sound Pressure Level	101 dB(A)
Sound Power Level	113 dB(A)
Oil Capacity	0.20 l (6.8 oz)
Guide Bar Length	16 in
Chain Pitch	3/8"