Water Separator; Engine Overheat Warning System - Yamaha WaveRunner SuperJet 2015 Owner's Manual

Control function operation
proper operation of the cooling system, make
sure that water is being discharged from the
cooling water pilot outlet. If water is not being
discharged from the outlet, stop the engine
and check the jet intake for clogging. (See
page 66 for information on the jet intake.)
TIP:
It will take about 20 seconds for the water

to reach the outlet after the engine is start-
ed.
Water discharge may not be constant

when the engine is running at idling speed.
If this occurs, apply a little throttle to make
sure that water discharges properly.
EJU40323

Water separator

The water separator prevents water from en-
tering the fuel tank by collecting any water
that has entered the fuel tank breather hose if
the watercraft was capsized.
22
If water has collected in the water separator,
drain it by loosening the drain screw.
1 Water separator
1
1 Drain screw
To drain water from the water separator:
(1) Place a drain pan or dry cloth under the
water separator.
(2) Gradually loosen the drain screw to drain
the water. Catch the draining water in the
drain pan or soak it up with the dry cloth
so that it does not spill into the engine
compartment. If any water spills into the
watercraft, be sure to wipe it up with a
dry cloth.
(3) Securely tighten the drain screw until it
stops.
EJU31665

Engine overheat warning system

If the engine temperature rises significantly,
the engine overheat warning system will acti-
vate and the engine speed will be limited to
about 3400 r/min to help prevent damage.