Instrument operation
37
sounds intermittently. At the same time, the
maximum engine speed is limited.
If the oil pressure warning is activated, imme-
diately reduce the engine speed, return to
shore, and then check the engine oil level.
(See page 48 for information on checking the
engine oil level.) If the oil level is sufficient,
have a Yamaha dealer check the watercraft.
TIP:
Push the “Hour Volt” button to stop the buzz-
er.
EJU37301Engine overheat warning
If the engine temperature rises significantly,
the “WARNING” indicator light and the engine
overheat warning indicator blink, and the
buzzer sounds intermittently. Then, the
“WARNING” indicator light and the engine
overheat warning indicator stop blinking and
remain on, and the buzzer sounds continu-
ously. After the light and indicator start to blinkand the buzzer sounds, the maximum engine
speed is limited.
If the engine overheat warning is activated,
immediately reduce the engine speed, return
to shore, and then make sure that water is be-
ing discharged from the port (left) cooling wa-
ter pilot outlets while the engine is running. If
there is no discharge of water, stop the en-
gine, and then check the jet intake for clog-
ging. (See page 89 for information on the jet
intake.) NOTICE: If you cannot locate and
correct the cause of the overheating, con-
sult a Yamaha dealer. Continuing to oper-
ate at higher speeds could result in severe
engine damage.
[ECJ00041]
TIP:
Push the “Hour Volt” button to stop the buzz-
er.
UF2R71E0.book Page 37 Monday, July 13, 2009 11:28 AM
Instrument operation
38
EJU37311Check engine warning
If a sensor malfunction or a short circuit is de-
tected, the “WARNING” indicator light and the
check engine warning indicator blink, and the
buzzer sounds intermittently.
If the check engine warning is activated, im-
mediately reduce the engine speed, return to
shore, and have a Yamaha dealer check the
engine.
TIP:
Push the “Hour Volt” button to stop the buzz-
er.
UF2R71E0.book Page 38 Monday, July 13, 2009 11:28 AM
Trouble recovery
87
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as pos-
sible46
Stale or contaminat-
edHave serviced by
Yamaha dealer—
Fuel tank Water or dirt present Have serviced by
Yamaha dealer—
Spark plug Fouled or defective Have serviced by
Yamaha dealer—
Incorrect heat range Have serviced by
Yamaha dealer—
Gap incorrect Have serviced by
Yamaha dealer—
Spark plug
capNot connected or
looseHave serviced by
Yamaha dealer—
Cracked, torn, or
damagedHave serviced by
Yamaha dealer—
Electrical wir-
ingLoose connection Have serviced by
Yamaha dealer—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning light or in-
dicator blinks or
comes onFuel level Empty Refill as soon as pos-
sible46
Oil pressure
warningOil pressure dropped Have serviced by
Yamaha dealer36
Engine over-
heatedJet intake clogged Clean
89
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer38 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF2R71E0.book Page 87 Monday, July 13, 2009 11:28 AM
