towing YAMAHA SUPERJET 2007 Owners Manual

Table of contents
Checking the jet thrust nozzle
angle ............................................ 52
Adjusting the steering friction .......... 53
Adjusting the jet thrust nozzle
angle ............................................ 53
Checking and adjusting the throttle
cable ............................................ 55
Cleaning and adjusting the spark
plugs ............................................ 56
Lubrication points ............................ 57
Adjusting the choke cable ............... 58
Checking the battery ....................... 59
Adjusting the carburetor .................. 60
Specifications .................................. 61
Specifications ................................ 61
Trouble recovery ............................. 62
Troubleshooting ........................... 62
Troubleshooting chart ...................... 62
Emergency procedures ................ 64
Cleaning the jet intake and
impeller ........................................ 64
Jumping the battery ......................... 65
Replacing the fuse ........................... 66
Towing the watercraft ...................... 66
Submerged watercraft ..................... 67
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Features and functions
23
The bow rope hole is used to attach a rope to
the watercraft when transporting, mooring, or
towing it in an emergency.
EJU36010Stern rope hole
The stern rope hole is located at the stern of
the watercraft.
The stern rope hole is used to attach a rope to
the watercraft when mooring it.
EJU31660Engine overheat warning system
This model is equipped with an engine over-
heat warning system.
If the engine starts to overheat, the engine
speed will be limited to about 3400 r/min.
If this occurs, immediately reduce the engine
speed, return to shore, and then check for wa-
ter discharge at the cooling water pilot outlet
while the engine is running. If there is no dis-
charge of water, shut the engine off, and thencheck the intake grate and impeller for clog-
ging.
WARNING
EWJ00050
Before attempting to remove weeds or de-
bris from the intake grate or impeller, shut
the engine off and remove the clip from the
engine shut-off switch. Severe injury or
death could result from coming in contact
with the rotating parts of the jet pump.
1Bow rope hole
1Stern rope hole
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Operation
41
(2) Swim to the rear of the watercraft and up-
right it by turning it clockwise only.
NOTE:
If the port (left) side of the capsized watercraft
is tilting up, push down on the gunwale so that
the port (left) side is down before turning the
watercraft clockwise.
CAUTION:
ECJ00520
Do not turn the watercraft over counter-
clockwise, otherwise water can enter the
carburetor and engine, which can result in
severe damage.
(3) Start the engine and operate the water-
craft to discharge any water remaining in
the engine compartment. (If the engine
does not start, see “Towing the water-
craft” on page 66 or “Submerged water-
craft” on page 67.)
NOTE:

To efficiently discharge water from the en-
gine compartment, operate the watercraft
as straight as possible and above planing
speed for at least 2 minutes.

To stabilize the watercraft when accelerat-
ing to planing speed, maintain a low center
of gravity by operating it in the kneeling po-
sition.
EJU33240Turning the watercraft
Steering control depends on the combination
of handlebar position and the amount of throt-
tle.
Water sucked in through the intake grate is
pressurized by the impeller in the jet pump. As
the pressurized water is expelled from the
pump through the jet thrust nozzle, it creates
thrust to move and steer the watercraft. The
higher the engine speed, the more thrust pro-
duced.
The amount of jet thrust, in addition to the po-
sition of the handlebars, determines how
sharply you turn.
A. More throttle produces higher thrust, so
the watercraft will turn more sharply.
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Trouble recovery
66
gine. Any wrong connection could dam-
age the electrical system.
(4) Start the engine, and then disconnect the
jumper cables by reversing the steps
above.
CAUTION:
ECJ00690

Never push the start switch while the en-
gine is running.

Do not operate the start switch for more
than 5 seconds, otherwise the battery
will be discharged and the engine will
not start. Also, the starter motor could
be damaged. If the engine does not start
in 5 seconds, release the start switch,
wait 15 seconds, and then try again.
EJU34670Replacing the fuse
The fuse is located in the electrical box.
To replace the fuse:
(1) Remove the cap, and then pull out the
red lead to pull out the fuse holder from
the electrical box.
(2) Open the fuse holder and replace the
fuse with one of the correct amperage.
WARNING
EWJ00800
Do not use fuses of higher amperage than
recommended. Substitution with a fuse
that has an improper rating can cause ex-
tensive electrical system damage and pos-
sible fire.
EJU34700Towing the watercraft
If the watercraft becomes inoperative in the
water, it can be towed to shore.
If the watercraft must be towed in an emer-
gency using a towline, the operator should
ride the watercraft, holding onto the handle-
bars and supporting his or her body weight on
the riding tray. This will help keep the bow of
the watercraft out of the water.
CAUTION:
ECJ00710

Tow the watercraft at 5 mph (8 km/h) or
less, otherwise water could enter the en-
gine through the exhaust passages or
through the air intake and flood the en-
gine compartment if it is towed too fast.

Tow the watercraft using the bow rope
hole only.
1Electrical box
2Fuse holder
3Cap
4Fuse
Fuse amperage:
10 A
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Trouble recovery
67

The bow must be kept up out of the wa-
ter during towing to prevent water from
entering the engine compartment.
WARNING
EWJ00810

The watercraft should only be towed in
an emergency.

The towline should be long enough so
that the watercraft will not collide with
the towing boat when slowing down. A
good rule of thumb is a towline that is
three times the combined length of the
towing boat and the watercraft.

The operator of the towing boat must
keep speed to a minimum and avoid traf-
fic or obstacles which could be a hazard
to the rider on the watercraft.
EJU34730Submerged watercraft
If the watercraft is submerged or flooded with
water, follow the procedure below and consult
a Yamaha dealer as soon as possible. Failure
to do so could result in serious engine dam-
age!
In an emergency:
(1) Beach the watercraft and remove the
hood. Turn the watercraft over far enough
to drain the water from the engine com-
partment.
CAUTION:
ECJ00700
Turning the watercraft on its side with the
hood removed could cause damage to the
steering pole. Use two people to provide
enough support to make sure that the
steering pole is not damaged.
(2) Turn the watercraft upright again.
(3) Turn the fuel cock knob to “OFF”.
(4) Remove the spark plugs and dry them
with a cloth.
(5) Without reinstalling the spark plugs,
crank the engine until all of the water in
the cylinders has been drained.
(6) Install the spark plugs and the hood.
(7) Turn the fuel cock knob to “ON”.
(8) Launch the watercraft into the water, and
then run the engine for at least 10 min-
utes. If the engine does not start, repeat
steps 3–8.
(9) Shut the engine off.
(10) Turn the fuel cock knob to “OFF”, remove
the silencer cap, and then spray a rust in-
hibitor into the carburetor while cranking
the engine.
(11) Have the watercraft inspected by a
Yamaha dealer as soon as possible.
1Bow rope hole
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Index
Pre-operation checks ............................... 27
Primary Identification (PRI-ID) number ...... 1
R
Recommended equipment ....................... 12
Rough water operation ............................. 43
S
Safe boating rules .................................... 14
Spark plugs, cleaning and adjusting ........ 56
Standing ................................................... 38
Start switch............................................... 20
Starting the engine ................................... 33
Starting the watercraft .............................. 38
Steering friction, adjusting ........................ 53
Steering pole ...................................... 22, 30
Steering system ................................. 22, 30
Stern rope hole......................................... 23
Stopping the engine ................................. 35
Stopping the watercraft ............................ 43
Storage..................................................... 46
Storage pouch .......................................... 24
Submerged watercraft .............................. 67
Switches ................................................... 32
T
Throttle cable, checking and adjusting ..... 55
Throttle lever ...................................... 21, 30
Towing the watercraft ............................... 66
Transporting ............................................. 45
Trolling speed, adjusting .......................... 60
Troubleshooting ....................................... 62
Troubleshooting chart .............................. 62
Turning the watercraft .............................. 41
W
Water separator ....................................... 28
Watercraft characteristics......................... 13
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