31
Engine control system
EMU26803
Alert system
NOTICE
ECM00091
Do not continue to operate the engine if a
alert device has activated. Consult your
Yamaha dealer if the problem cannot be
located and corrected.
EMU26826
Overheat alert
This engine has the overheat alert device. If
the engine temperature rises too high, the
alert device will activate.
●
The engine speed will automatically de-
crease to about 2000 r/min.
●
The overheat-alert indicator will light or
blink.
●
The buzzer will sound.
If the alert system has activated, stop the en-
gine and check the cooling water inlets:
●
Check trim angle to be sure that the cool-
ing water inlet is submerged.
●
Check the cooling water inlet for clogging.
Dual engine drive users:
If the overheat-alert system of one engine
activates, the engine will slow down. To
switch off the alert activation on the engine
not affected by overheating, turn off the main
switch of the engine overheating. If the alert
system has activated, stop the engine and tilt
the outboard motor up to check the cooling
water inlet for clogging. If the alert system
has still activated, tilt the overheated out-
board motor up and return to the port.
EMU26848
Oil level alert and oil filter clogging
alert
Oil injection models
This engine has an oil level alert system. If
ZMU01757
OFF
START
ON
OFF
START
ON
ZMU04584
ZMU02630
