5. TROUBLE AND TROUBLESHOOTING
49
EN
5. TROUBLE AND TROUBLESHOOTING
Note: Other warning lamps do not light up when the switch is turned on. They only light up when there
is an abnormality.
Trouble
Probable Cause
Measure
Reference
Alarm buzzer and alarm
lamps on during opera-
tion
Shift to low speed operation immediately, and check which lamp has come
on. Stop the engine for inspection. If no abnormality is identified and there
is no problem with operation, return to port at your lowest speed and
request repairs.
Lubricating oil low-pres-
sure alarm. Warning
lamp goes on
Engine Lubricating Oil level low.
Check Lubricating Oil, Add
or replace.
3.2.3
Lubricating oil filter clogged.
Replace.
4.3.1(1)
Water in sail drive seal
alarm goes on.
Breakage of rubber seal on the
sail drive
Check and change the rub-
ber seal.
Coolant temperature
high alarm warning lamp
goes on
Insufficient water in coolant tank.
Check coolant and replen-
ish.
3.2.4
Insufficient seawater causing
temperature to rise.
Check seawater system.
Contamination inside cooling
system.
Ask for repairs.
Faulty warning devices
Do not operate the engine if the alarm devices are not repaired. Serious
accidents may result if difficulties are not spotted due to faulty alarm
lamps. When the switch is turned ON: Alarm buzzer does not sound. Cir-
cuit broken or buzzer defective. Ask for repairs.
Warning lamps do not go
on
Lubricating oil low pressure.
Water in sail drive seal alarm.
No current available.
Circuit broken or lamp burnt out.
Ask for repairs.
One of the warning
lamps does not go out
Sensor switches faulty.
Ask for repairs.
Battery low charge lamp
does not go out during
operation
V-belt is loose or broken.
Replace V-belt; adjust ten-
sion.
4.3.1(6)
Battery defective.
Check fluid level, specific
gravity. Replace.
4.3.2(2)
Alternator failure.
Ask for repairs.
NOTICE
NOTICE
Summary of Contents for 3YM20
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