Specifications; Engine; Fuel System; Ignition System - Stihl MS 441 Manual

3.

Specifications

3.1

Engine

Displacement:
Bore:
Stroke:
Engine power to ISO 7293:
Max. permissible engine speed
(with bar and chain):
Idle speed:
Clutch:
Clutch engages at:
Crankcase leakage test
at gauge pressure:
under vacuum:
3.2

Fuel system

3.3

Ignition system

3.4

Chain lubrication

MS 441, MS 441 C
MS 441
3
70.7 cm
50 mm
36 mm
4.1 kW (5.8 HP)
at 9,500 rpm
13,500 rpm
2,800 rpm
Centrifugal clutch without linings
3,700 rpm
p = 0.5 bar
ü
p = 0.5 bar
u
Carburetor leakage test
at gauge pressure:
Operation of tank vent
at gauge pressure:
Fuel:
Air gap between ignition
module and fan wheel:
Spark plug (suppressed):
Electrode gap:
Speed-controlled oil pump with reciprocating piston –
manual oil flow control
Oil delivery rate:
Oil pump with elevated
oil flow:
p = 0.8 bar
ü
p = 0.5 bar
ü
as specified in instruction
manual
0.15...0.35 mm
NGK BPMR 7 A
0.5 mm
3
6.0...17 cm /min
at 10,000 rpm
3
6.0...24 cm /min
at 10,000 rpm
5