Yamaha SR230, Owner'S/Operator'S Manual

Page: 71 / 118

3-25 3-24
POST-OPERATION
CHECKS
POST-OPERATION CHECKS
These post-operation procedures are
developed to help preserve the long-
term appearance and reliability of your
Sport Boat. Perform these procedures
as soon as possible after the boat is
loaded back on the trailer after the
day’s use.
Some owners plan to moor their boat
seasonally, rather than keeping it on
the trailer between uses. The proce-
dures described in this section may not
be possible if your Sport Boat is
moored in the water. Boats which are
moored will require periodic removal
from the water to clean the hull and jet
pump area. The frequency of this main-
tenance will depend upon whether the
water is salt or fresh, as well as other
local water conditions.
Leaving the boat in the water for
extended periods will accelerate the
rate of normal deterioration of the
jet pump components and hull fin-
ish. Stray electrical voltage in the
water, marine organisms, and salt-
water corrosion are a few of the con-
ditions that can adversely affect the
life of many Sport Boat compo-
nents.
1) After putting the Sport Boat on the
trailer, flush cooling system on each
engine to prevent the cooling sys-
tem from clogging up with salt,
sand, or dirt. Refer to page 4-2 for
the cooling system flushing proce-
dure.
2) Drain residual water from the
exhaust system by starting the
engine then alternately pushing the
throttle lever up to half throttle and
back for 10 to 15 seconds.
Never run the engine at full throttle
or for more than 15 seconds while
the boat is out of the water. The
engine may overheat and/or seize.
3) Wash down the hull, helm, and both
jet drive units with fresh water.
4) Open the rear platform hatch, and
check for any water pooled on top of
the clean-out port caps. If water is
found, remove the caps, let water
drain, then reinstall the caps. See
Page 5-5 for more information.
CROSSING WAKES AND SWELLS
You will not always have flat, smooth
water. There will be swells, wakes from
other boats, etc.
The best way to cross wakes and
swells is with the least jolt to you and
the boat. Small swells are not as diffi-
cult to cross as larger swells or wakes.
Crossing a sharp wake gives more of a
jolt than a broad swell.
To cross a wake or swell, change your
speed and choose the angle at which
you cross the wake or swell. Usually, a
slower speed and “quartering” the
wake (crossing at an angle) will reduce
the jolt.
Two other things you may notice. The
first is that crossing a group of wakes
or swells is not as easy or smooth as
crossing just one wake. The second is
that when you quarter the wake or
swell the boat will try to steer away
from the wake or swell. When crossing
at a 45° angle, you may not notice this,
but at a smaller angle, say 10°, it can
be very strong. Be prepared to steer
and balance as necessary.
CAUTION:
CAUTION:
3
O
PERATION
O
PERATION
3
WAKE
90°
45°
10°
SHARP WAKES
BROAD SWELL
*SR230(2003)-OwnMnl 3/21/03 2:10 PM Page 3-24