Operation Manual

6 MS 240, MS 260, MS 260 C
3. Specifications
3.1 Engine
MS 240 MS 260, MS 260 C
Displacement: 41.6 cm
3
50.2 cm
3
Bore: 42 mm 44.7 mm
Stroke: 30 mm 32 mm
Engine power to ISO 7293: 2.1 kW (2.85 bhp)
at 9500 rpm
2.6 kW (3.5 bhp)
at 9500 rpm
Maximum permissible engine speed
(with bar and chain): 13000 rpm 14000 rpm
Versions with catalytic converter
Maximum permissible engine speed
(with bar and chain):
13000 rpm
Idle speed: 2800 rpm 2800 rpm
Clutch: Centrifugal clutch without
linings
Centrifugal clutch without
linings
Clutch engages at: 3600 rpm 3600 rpm
Crankcase leakage test
at gauge pressure: 0.5 bar
under vacuum: 0.5 bar
3.2 Fuel System
Carburetor leakage test at
gauge pressure:
0.8 bar
Operation of tank vent at
gauge pressure:
0.5 bar
Fuel: as specified in instruction
manual
3.3 Ignition System
Air gap between ignition
module and fanwheel: 0.15...0.30 mm
Spark plug (suppressed): NGK BPMR 7 A
Electrode gap: 0.5 mm
3.4 Chain Lubrication
Speed-controlled oil pump with reciprocating piston and
manual flow control
Oil pump without adjustable
delivery rate:
7.5 (+/- 2.5) cm
3
/min at
10000 rpm
Oil pump with adjustable
delivery rate:
4.5...11.5 cm
3
/min at
10000 rpm