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SportsBoat_F6A11.book Page 115 Thursday, June 15, 2023 8:14 AM

Operation

swells or wakes. Crossing a sharp wake gives Post-operation checks
more of a jolt than a broad swell. These post-operation procedures are devel-
oped to help preserve the long-term appear-
ance and reliability of your boat. Perform
these procedures as soon as possible after
the boat is loaded back on the trailer after the
Sharp wakes day’s use.
Some owners prefer to moor their boat sea-
sonally, rather than keeping it on the trailer
between uses. Extended mooring is not
recommended by Yamaha, but can be
Broad swell
performed if proper precautions are taken
To cross a wake or swell, change your speed to help guard against prolonged environ-
and choose the angle at which you cross the mental exposure and marine growth.
wake or swell. Usually, a slower speed and Proper flushing of the cooling system on
“quartering” the wake (crossing at an angle) each engine is not possible with the boat in
will reduce the jolt. the water. In addition, conditions such as
Two other things you may notice. The first is stray electrical voltage in the water, marine
that crossing a group of wakes or swells is organisms, and saltwater corrosion can ad-
not as easy or smooth as crossing just one versely affect the life of many boat compo-
wake. The second is that when you quarter nents. NOTICE: Leaving the boat in the
the wake or swell, the boat will try to steer water for extended periods will accelerate
away from the wake or swell. When crossing the rate of normal deterioration of the ex-
at a 45° angle, you may not notice this, but at posed drive components.
a smaller angle, say 10°, it can be very strong. If you do decide to moor your boat, be sure to
Be prepared to steer and balance as neces- remove it from the water periodically to clean
sary. the hull and jet pump areas. The frequency of
maintenance required will depend upon
Wake whether the water is salt water or fresh water
and other local water conditions. See your
dealer for additional preventative mainte-
nance recommendations on mooring and/or
saltwater use for your area.
(1) After putting the boat on the trailer, flush
90˚ the cooling system on each engine to
prevent the cooling system from clog-
45˚
10˚ ging up with salt, sand, or dirt. (See page
121 for the cooling system flushing pro-
cedure.)
(2) Drain residual water from the exhaust
system by starting the engine, and then

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