53
Fault finding chart
CAUSE
Engines
does not
start
Engine
stops
Engine does not
reach correct
speed at full
throttle or engine
knocking
Engine runs
unevenly or
vibrates
abnormally
Engine
becomes
abnormally
hot
Main switch not connected; discharged
battery, break in electrical cables or main
switch.
Empty fuel tank fuel cock closed, blocked
fuel filter.
Water or contamination in the fuel.
Defective spark plugs.
Burnt contact breakers, moisture in the
distributor and ignition cables.
Idling speed not correctly adjusted.
Defective tachometer.
Boat abnormally loaded.
Weed growth on the boat hull and on the
outboard drive.
Damaged propeller.
Blockage in the cooling water intake, oil
cooler (AQ145), cooling jackets, heat ex-
changer. Defect impeller or thermostat flu-
id level too low in the expansion tank.
The fuel quality is not corresponding to the
ignition setting.
Cable Colour Code
Marking Colour mm
2
A Red 10.6
A' Red 5.3
B Light blue 1.3
C Orange 5.3
D Light brown 1.3
E Black 5.3
E' Black 1.3
F Yellow/red 5.3
stripes
G Dark red 1.3
H Grey 1.3
I Light yellow 1.3
J Dark blue 1.3
K Black 42.4
L Red 42.4
SW, Ignition switch: I = IGN, B = BAT, S = SOL
Bosch, Ignition switch: I = 15, 75, B = 30 S = 50
1) Hour meter or fuel gauge
2) Fuses
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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