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SportsBoat_F4X15.book Page 68 Friday, June 16, 2023 8:43 AM

Instrument operation

Check engine warning particularly while applying throttle. If you do
If an engine sensor malfunction or a short cir- not see any water at the outlets, cooling wa-
cuit is detected, a warning will appear on the ter may not be circulating in the engines.
multi-function display and the buzzer will
sound. If a fault is detected for the engines,
“Check Engine” will be displayed. If this oc-
curs, reduce the engine speed, return to
shore, and have a Yamaha Boat Dealer check
the engine.

Low oil pressure warning 1
If the oil pressure does not rise to specifica-
tion, a warning will appear on the multi-func-
tion display and the buzzer will sound. If a 1 Cooling water pilot outlet (port engine)
fault is detected for the engines, “Low Oil
Pressure” will be displayed. At the same time,
the engine speed is automatically limited to
help prevent damage. If this occurs, reduce
the engine speed, return to shore or maneu-
ver to a safe location, and check the engine
oil level. (See page 96 for engine oil level
checking procedures.)
If the oil level is low, add enough engine oil to
raise it to the proper level. If the oil level is suf- 1
ficient, have a Yamaha Boat Dealer check the
engine.
1 Cooling water pilot outlet (starboard engine)
Over temperature warning TIP:
This model is equipped with an over temper- If the cooling water passages in the engines
ature warning system. If the engines start to are dry, it will take about 20 seconds for wa-
overheat, a warning will appear on the multi- ter to reach the pilot outlets after starting.
function display and the buzzer will sound. If
the engine is over heating, “Engine Over If water is not circulating, something may be
Temperature” will be displayed. At the same clogging the intake grates. Refer to “Jet
time, the engine speed is automatically limit- pump clean-out procedure” on page 142.
ed to help prevent damage. If this occurs, im-
mediately reduce the engine speed, return to
shore or maneuver to a safe location, and
check for water discharge at the cooling wa-
ter pilot outlets. Check that water comes out
of the outlets while the engines are running,

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