Operation
116
Post-operation checks
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
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
performed if proper precautions are taken
to help guard against prolonged environ-
mental exposure and marine growth.
Proper flushing of the cooling system on
each engine is not possible with the boat in
the water. In addition, conditions such as
stray electrical voltage in the water, marine
organisms, and saltwater corrosion can ad-
versely affect the life of many boat compo-
nents.
NOTICE:
Leaving the boat in the
water for extended periods will accelerate
the rate of normal deterioration of the ex-
posed drive components.
If you do decide to moor your boat, be sure to
remove it from the water periodically to clean
the hull and jet pump areas. The frequency of
maintenance required will depend upon
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
the cooling system on each engine to
prevent the cooling system from clog-
ging up with salt, sand, or dirt. Refer to
page 122 for the cooling system flushing
procedure.
(2) Drain residual water from the exhaust
system by starting the engine, and then
alternately pushing the remote control le-
ver up to half throttle and back to idle for
10 to 15 seconds.
NOTICE:
Do not run
the engine over 4000 r/min on land. Al-
so, do not run the engine for more
than 15 seconds without supplying
water, otherwise, the engine could
overheat and/or seize.
(3) Stop the engine.
(4) Wash down the hull, helm, and both jet
drive units with fresh water.
(5) Open the rear platform hatch. (See page
76 for rear platform hatch opening and
closing procedures.)
(6) Remove the access port caps to let any
water drain that has pooled on them.
(See page 139 for access port cap re-
moval and installation procedures.) If the
boat will be stored on the trailer nearby,
leave the caps out until you prepare to
launch the boat again. If the boat will be
transported on the trailer any distance,
temporarily reinstall the caps and close
the hatch until you get home. Open the
hatch again when you arrive and remove
the caps as before. Leave the caps loose
until you plan to transport the boat on the
trailer again.
NOTICE:
Leaving the ac-
cess port caps out when you are not
using or transporting the boat helps
keep them from becoming stuck in the
access ports.
(7) Remove the hull drain plug. (See page
(8) Rinse the engine compartment with a
small amount of fresh water. Be careful
not to get water on the air filter area or
electrical components. Allow any water
in the bilge to drain out. After the water
has drained, wipe the engine compart-
ment and bilge with dry rags.
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