Yamaha 2017 WaveRunner EX Owner's/Operator's Manual page 34

Control function operation
If water has collected in the water separator,
drain it by loosening the drain screw.
1
2
1 Water separator
2 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.
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