engine overheat YAMAHA SUPERJET 2012 Owners Manual
[x] Cancel search | Manufacturer: YAMAHA, Model Year: 2012, Model line: SUPERJET, Model: YAMAHA SUPERJET 2012Pages: 78, PDF Size: 4.55 MB
Page 5 of 78
Table of contents
General and important labels ........... 1
Identification numbers .................... 1
Primary Identification (PRI-ID)
number ........................................... 1
Craft Identification Number (CIN) ...... 1
Engine serial number ........................ 1
Important labels .............................. 2
Warning labels ................................... 3
Other labels ....................................... 6
Safety information ............................. 7
Limitations on who may operate
the watercraft .............................. 7
Cruising limitations ......................... 8
Operation requirements ................. 9
Recommended equipment ........... 11
Hazard information ....................... 12
Watercraft characteristics ............. 12
Safe boating rules ........................ 13
Enjoy your watercraft
responsibly ................................ 14
Description....................................... 15
Watercraft glossary ...................... 15
Location of main components ...... 16
Control function operation ............. 18
Watercraft control functions ......... 18
Engine stop switch .......................... 18
Engine shut-off switch ..................... 18
Start switch ...................................... 18
Throttle lever ................................... 19
Steering system ............................... 19
Steering pole ................................... 19
Fuel cock knob ................................ 20
Choke knob ..................................... 20
Cooling water pilot outlet ................. 20
Water separator ............................... 21
Engine overheat warning system .... 21
Equipment operation ...................... 23
Equipment .................................... 23
Hood ................................................ 23Bow rope hole ................................. 24
Stern rope hole ................................ 24
Storage pouch ................................. 24
Fire extinguisher container .............. 25
Operation and handling
requirements ................................... 27
Fuel and engine oil
requirements ............................. 27
Fuel ................................................. 27
2-stroke engine oil ........................... 27
Mixing fuel and oil ............................ 27
Filling the fuel tank .......................... 28
Draining the bilge water ............... 29
Draining the bilge water on water .... 29
Transporting ................................. 30
First-time operation ........................ 31
Engine break-in ............................ 31
Pre-operation checks ..................... 32
Pre-operation checklist .................... 32
Pre-operation check points .......... 34
Pre-launch checks ........................... 34
Post-launch checks ......................... 38
Operation ......................................... 39
Operating your watercraft ............ 39
Getting to know your watercraft ....... 39
Learning to operate
your watercraft ............................. 39
Operating positions ......................... 39
Launching the watercraft ................. 40
Starting the engine on water ........... 40
Stopping the engine ........................ 42
Leaving the watercraft ..................... 42
Operating the watercraft .................. 42
Turning the watercraft ..................... 42
Stopping the watercraft ................... 44
Starting off ....................................... 44
Capsized watercraft ......................... 47
Beaching the watercraft ................... 48
Operating in weeded areas ............. 48
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Control function operation
18
EJU31024
Watercraft control functions EJU31152Engine stop switch“”
The engine stop switch (red button) stops the
engine when the switch is pushed.
EJU31163Engine shut-off switch“”
The engine shut-off switch automatically
stops the engine when the clip, on the end of
the engine shut-off cord (lanyard), is removed
from the switch, such as if the operator falls off
the watercraft.
Insert the clip under the engine shut-off switch
before starting the engine.
When the engine is not running, remove the
clip from the engine shut-off switch to preventaccidental starting or unauthorized operation
by children or others.
EJU41050Start switch“”
NOTICE
ECJ01360
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
The start switch (green button) starts the en-
gine when the switch is pushed.
Release the start switch as soon as the en-
gine starts to run. If the engine does not start
in 5 seconds, release the start switch, wait 15
seconds, and then try again. NOTICE: Never
push the start switch while the engine is
running. Do not operate the start switch
for more than 5 seconds, otherwise the
battery will be discharged and the engine
1Engine stop switch
1Engine shut-off switch
2Clip
3Engine shut-off cord (lanyard)
1
STOP
312
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Control function operation
21
that water is being discharged from the cool-
ing water pilot outlet. If water is not being dis-
charged from the outlet, stop the engine and
check the jet intake for clogging. (See page
65 for information on the jet intake.)
TIP:
It will take about 20 seconds for the water to
reach the outlet after the engine is started.
Water discharge may not be constant when
the engine is running at idling speed. If this
occurs, apply a little throttle to make sure
that water discharges properly.
EJU40322Water separator
The water separator prevents water from en-
tering the fuel tank by collecting any water that
has entered the fuel tank breather hose if the
watercraft was capsized.If water has collected in the water separator,
drain it by loosening the 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.
EJU31664Engine overheat warning system
If the engine temperature rises significantly,
the engine overheat warning system will acti-
vate and the engine speed will be limited to
about 3400 r/min to help prevent damage.
1Water separator
1Drain screw
1
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Control function operation
22
If the engine overheat warning system is acti-
vated, immediately reduce the engine speed,
return to shore, and then make sure that wa-
ter is being discharged from the cooling water
pilot outlet while the engine is running. If there
is no discharge of water, stop the engine, and
then check the jet intake for clogging. (See
page 65 for information on the jet intake.)
NOTICE: If you cannot locate and correct
the cause of the overheating, consult a
Yamaha dealer. Continuing to operate at
higher speeds could result in severe en-
gine damage.
[ECJ00041]
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Page 43 of 78
Pre-operation checks
37
Make sure that there is the proper amount of
throttle lever free play when the throttle lever
is in the fully closed (idle) position.
EJU32663Engine shut-off cord (lanyard) check
Make sure that the engine shut-off cord (lan-
yard) is not damaged. If the cord is damaged,
replace it. WARNING! Never try to repair
the engine shut-off cord (lanyard) or tie it
together. The engine shut-off cord (lan-
yard) may not pull free when the operator
falls off, allowing the watercraft to contin-
ue to run and cause an accident.
[EWJ01220]EJU41020
Switch checks
NOTICE
ECJ01360
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
Check the start switch, the engine stop
switch, and the engine shut-off switch for
proper operation. (See pages 18 to 18 for in-
formation on operating each switch.)
To check the operation of the switches:
(1) Push the start switch to make sure that
the engine starts.
(2) As soon as the engine starts running,
push the engine stop switch to make sure
that the engine stops immediately.
(3) Restart the engine, and then pull the en-
gine shut-off cord (lanyard) to remove the
clip from the engine shut-off switch to
make sure that the engine stops immedi-
ately.
EJU41210Storage pouch checks
Make sure that the storage pouch is not dam-
aged and that water has not collected in the
pouch. Also, make sure that the storage
1Throttle lever free play
Throttle lever free play:
7.0–10.0 mm (0.28–0.39 in)
1Engine shut-off switch
2Clip
3Start switch
4Engine stop switch
5Engine shut-off cord (lanyard)
123
4
5
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Page 46 of 78
Operation
40
wake, but the watercraft is moving through the
water rather than skimming on top of it.)
At very slow speeds, it may be necessary to
support your upper-body weight with your el-
bows resting on the gunwales, trailing your
legs in the water.
Standing
After you are comfortable handling the water-
craft from a kneeling position, try standing as
the watercraft gains speed. The watercraft will
become easier to balance as the speed in-
creases, because jet thrust provides stability
as well as directional control. When you are
moving slowly, or preparing to stop, you will
probably need to return to the kneeling posi-
tion to maintain your balance.
EJU32821Launching the watercraft
When launching the watercraft, make sure
that there are no obstacles around you.If the watercraft is launched from a trailer,
someone should make sure that waves do not
push the watercraft into the trailer.
After the watercraft is in the water, turn it
around so that the bow faces the direction you
wish to go.
EJU32835Starting the engine on water
WARNING
EWJ01520
Do not apply throttle when others are at
the rear of the watercraft. Turn the engine
off or keep it at idle. Water and debris exit-
ing the jet thrust nozzle can cause severe
injury.
To start the engine:
(1) Move the watercraft to an area that is free
from weeds and debris, and has a water
depth of at least 60 cm (2 ft) from the bot-
tom of the watercraft. NOTICE: Never
run the engine in water that is less
than 60 cm (2 ft) deep from the bottom
of the watercraft, otherwise pebbles or
sand could be sucked into the jet in-
take, causing impeller damage and en-
gine overheating.
[ECJ00472]
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Operation
45
sharp turns or other maneuvers that
make it hard for others to avoid you or
understand where you are going. Avoid
areas with submerged objects or shal-
low water.
Take early action to avoid collisions. Re-
member, watercraft and other boats do
not have brakes. Do not release the
throttle lever when trying to steer away
from objects—you need throttle to steer.
WARNING
EWJ00632
Avoid forceful jet thrust and limited visibil-
ity while reboarding. Get to a standing or
kneeling position quickly, but do not ex-
pose yourself to the forceful jet thrust.
NOTICE
ECJ01340
Never run the engine in water that is less
than 60 cm (2 ft) deep from the bottom of
the watercraft, otherwise pebbles or sand
could be sucked into the jet intake, caus-
ing impeller damage and engine overheat-
ing.
The watercraft is less stable when at a stand-
still or at a slow speed. It takes skill to keep the
watercraft upright when starting.
To stabilize the watercraft when accelerating
to planing speed, maintain a low center of
gravity by operating it in the kneeling position.Even though it is easier to start in shallow wa-
ter, you must learn deep-water boarding first.
You will inevitably fall off, so be sure you know
how to get back on the watercraft once you
are away from shore.
EJU33104Boarding and starting in shallow water
Be sure to learn the deep-water starting meth-
od before operating the watercraft in water
where it is too deep for you to stand. (See
page 46 for the deep-water starting method.)
(1) Launch the watercraft in water free from
weeds and debris and at least 60 cm (2 ft)
deep from the bottom of the watercraft.
NOTICE: Never run the engine in water
that is less than 60 cm (2 ft) deep from
the bottom of the watercraft, other-
wise pebbles or sand could be sucked
into the jet intake, causing impeller
damage and engine overheating.
[ECJ00472]
(2) Attach the engine shut-off cord (lanyard)
to your left wrist, and then attach the clip
to the engine shut-off switch.
(3) Grip the handlebars with both hands.
Place one knee on the riding tray and bal-
ance there.
(4) Look in all directions, start the engine,
and then begin to accelerate.
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Operation
48
see “Towing the watercraft” on page 67
or “Submerged watercraft” on page 67.)
NOTICE: Do not run the engine at full
throttle for at least 1 minute after the
engine has been restarted. Bilge water
in the engine compartment can splash
into the engine, which can result in se-
vere damage.
[ECJ00553]
EJU33302
Beaching the watercraft
To beach the watercraft:
(1) Make sure that there are no boats, swim-
mers, or obstacles near the beach.
(2) Release the throttle lever to reduce
speed about 90 m (300 ft) before you
reach the intended beaching area.
(3) Slowly approach the beach and stop the
engine just before reaching land.
WARNING! You need throttle to steer.
Shutting the engine off can cause you
to hit an obstacle you are attempting
to avoid. A collision could result in se-
vere injury or death.
[EWJ00601] NOTICE:
Never run the engine in water that is
less than 60 cm (2 ft) deep from the
bottom of the watercraft, otherwise
pebbles or sand could be sucked into
the jet intake, causing impeller dam-
age and engine overheating.
[ECJ00472]
(4) Get off the watercraft and pull it up on the
beach.
EJU37193Operating in weeded areas
Always avoid using your watercraft in areas
where weed growth is thick. If operating in
weeded areas is unavoidable, alternately
squeeze the throttle lever and relax your grip
on the throttle lever to vary the engine speed.
Weeds tend to become clogged more when
operating at a steady speed and at trolling
speed. If weeds may have clogged the intakearea, clean the jet intake. (See page 65 for in-
formation on the jet intake.)
EJU41060After removing the watercraft from the
water
NOTICE
ECJ01360
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
After operating and removing the watercraft
from the water, promptly discharge the re-
maining water from the cooling water passag-
es.
To discharge water from the cooling water
passages:
(1) Make sure that the area around the wa-
tercraft is clear, and then start the engine.
(2) Discharge the remaining water out of the
cooling water passages by alternately
squeezing and releasing the throttle lever
quickly for 10 to 15 seconds.
(3) Stop the engine.
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Care and storage
49
EJU41191
Post-operation care
WARNING
EWJ00320
Always turn the fuel cock knob to “OFF”
when storing the watercraft, otherwise
fuel could leak out into the engine or en-
gine compartment, which would create a
fire hazard.
After using the watercraft, always take it out of
the water, clean it, and store it. Leaving the
watercraft in the water for extended periods
will accelerate the rate of normal deterioration
of the jet pump and hull. Marine organisms
and corrosion are some of the conditions that
can shorten the life of many watercraft com-
ponents.
EJU33518Flushing the cooling water passages
NOTICE
ECJ01360
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
Flush the cooling water passages to prevent
them from clogging with salt, sand, or dirt.
(1) Place the watercraft in a horizontal posi-
tion.
(2) Remove the hood. (See page 23 for hood
removal and installation procedures.)(3) Connect the garden hose adapter to a
garden hose.
(4) Loosen the flushing hose connector cap
and remove it. Insert the garden hose
adapter into the flushing hose connector
and turn it until it is securely connected.
(5) Connect the garden hose to a water tap.
(6) Make sure that the area around the wa-
tercraft is clear, and then start the engine.
Immediately after the engine starts, turn
the water supply on gradually until water
1Garden hose adapter
1Flushing hose connector
2Flushing hose connector cap
3Garden hose adapter
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Care and storage
54
Steering cable ball joint (handlebar end)
and steering cable inner wire (handlebar
end)
To access the steering cable ball joint (han-
dlebar end) and steering cable inner wire
(handlebar end), remove the steering pole
cover. (See step 1 in “Adjusting the jet
thrust nozzle angle” on page 56 for informa-
tion on removing the steering pole cover.)
Steering cable ball joint (jet thrust nozzle
end) and steering cable inner wire (jet thrust
nozzle end)
EJU40943Rustproofing
NOTICE
ECJ01360
Do not run the engine for more than 15
seconds on land without supplying water,
otherwise the engine could overheat.
Spray metallic parts of the hull and engine
with a rust inhibitor.To rustproof the internal engine components:
(1) Remove the hood. (See page 23 for hood
removal and installation procedures.)
(2) Loosen the silencer cap and remove it.
(3) Make sure that the area around the wa-
tercraft is clear, and then start the engine
in a well-ventilated area.
(4) Run the engine at a fast idle.
(5) Quickly spray as much rust inhibitor as
possible through the hole in the silencer
cover. Keep spraying until the engine
stalls (or a maximum of 15 seconds).
WARNING! Do not pour or spray gas-
oline, or any substance other than a
rust inhibitor through the hole in the
silencer cover. Do not spray flamma-
ble rust inhibitor products on engine
surfaces while the engine is hot. Oth-
erwise, a fire or explosion could oc-
cur.
[EWJ00301]
(6) Securely install the silencer cap by tight-
ening it until it stops. NOTICE: Be sure to
install the silencer cap securely after
fogging the engine, otherwise water
could enter the engine and cause
damage.
[ECJ00152]
(7) Securely install the hood in its original po-
sition.
1Silencer cap
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