Specifications; Engine; Fuel System; Ignition System - Stihl MS 231 Manual

2.

Specifications

2.1

Engine

Displacement:
Bore:
Stroke:
Engine power to ISO 7293:
Maximum permissible engine speed
with bar and chain:
Idle speed:
Clutch:
Clutch engages at:
Crankcase leakage test
at gauge pressure:
under vacuum:
2.2

Fuel System

2.3

Ignition System

2.4

Chain Lubrication

MS 231, MS 231 C, MS 251, MS 251 C
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MS 231
40.6 cm
41.5 mm
30.0 mm
2.0 kW (2.7 bhp)
at 9,500 rpm
13,000 rpm
2,800 rpm
Centrifugal clutch without
linings
3,500 rpm
0.5 bar
0.5 bar
Carburetor leakage test at
gauge pressure:
Operation of tank vent at
gauge pressure:
Fuel:
Air gap between ignition
module and fanwheel:
Spark plug (resistor type):
Electrode gap:
Speed-controlled Ematic oil pump
Oil delivery rate:
MS 251
3
45.6 cm
44.0 mm
30.0 mm
2.2 kW (3.0 bhp)
at 9,500 rpm
13,000 rpm
2,800 rpm
Centrifugal clutch without
linings
3,500 rpm
0.8 bar
0.5 bar
as specified in instruction
manual
0.30 (+ 0.05/- 0.10) mm
NGK CMR 6 H
0.5 mm
8.0 (+/3.0) cm
at 10,000 rpm
3
3
/min
5