2016 YAMAHA SUPERJET ECU

Control function operation
22
proper operation of the cooling system, make
sure that water is being discharged from the
cooling water pilot outlet. If water is not being
discharged from the outlet, stop the engine
and check the jet intake for clogging. (See
page 66 for information on the jet intake.)
TIP:
It will take about 20 seconds for the water
to reach the outlet after the engine is start-
ed.
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.
EJU40323Water 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.
EJU31665Engine 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
UF4D71E0.book Page 22 Thursday, April 23, 2015 1:48 PM

Equipment operation
25
To install the hood:
(1) Position the hood on the deck so that the
two projections at the front of the hood fit
under the two stays on the deck.
(2) Push down on the hood latch, and then
turn the knob to the “LOCK” position to
securely lock the hood in place.
(3) While holding the steering pole, move
the lock pin to the stowed position, and
then lower the steering pole.
EJU36003Bow rope hole
The bow rope hole is used to attach a rope to
the watercraft when transporting, mooring, ortowing it in an emergency. (See page 68 for
information on towing the watercraft.)
EJU36012Stern rope hole
The stern rope hole is used to attach a rope
to the watercraft when mooring it.
EJU31676Storage pouch
The storage pouch is located on the bottom
of the hood.
Use the storage pouch to store the own-
er’s/operator’s manual, tool kit, and other
small items. The storage pouch is not de-
signed to be waterproof. If you carry objects
that must be kept dry, put them in a water-
proof bag.
To remove the storage pouch:
(1) Remove the hood. (See page 24 for hood
removal and installation procedures.)
LOCKOPEN
1Bow rope hole
1Stern rope hole
UF4D71E0.book Page 25 Thursday, April 23, 2015 1:48 PM

Equipment operation
26
(2) Unfasten the bands, and then remove
the storage pouch.
To install the storage pouch:
(1) Bend the owner’s/operator’s manual
slightly to insert it into the storage pouch,
and then add the tool kit and any other
small items. Fold the pouch, and then
wrap the strap around it.
(2) Install the storage pouch on the hood
and secure it with the bands.
(3) Securely install the hood in its original
position.
EJU41004Fire extinguisher container
The fire extinguisher container is located on
the hood.To open the fire extinguisher container:
(1) Lift the steering pole and support it with
the lock pin.
(2) Grasp the tab, pull the band to the rear,
and then pull it up.
(3) Lift the fire extinguisher container about
30 degrees from the storage position.
NOTICE: Do not force the fire extin-
guisher container up more than 30 de-
grees from the storage position,
otherwise the container and hood
could be damaged.
[ECJ00402]
1Storage pouch
2Band
1Strap
1Steering pole
2Lock pin
1Fire extinguisher container
2Ta b
UF4D71E0.book Page 26 Thursday, April 23, 2015 1:48 PM

Equipment operation
27
(4) Loosen the fire extinguisher container
cap and remove it.
To close the fire extinguisher container:
(1) Insert the fire extinguisher into the con-
tainer, and then securely install the fire
extinguisher container cap by tightening
it until it stops.
(2) Lower the container on the hood to its
storage position and secure it with the
band.
(3) While holding the steering pole, move
the lock pin to the stowed position, and
then lower the steering pole.
1Fire extinguisher container cap
UF4D71E0.book Page 27 Thursday, April 23, 2015 1:48 PM

Operation and handling requirements
29
(2) To mix them thoroughly, shake the con-
tainer from side to side.
EJU31917Filling the fuel tank
To fill the fuel tank:
(1) Before refueling, stop the engine. Do not
stand or sit on the watercraft. Never refu-
el while smoking, or while in the vicinity
of sparks, open flames, or other sources
of ignition.
(2) Place the watercraft in a well-ventilated
area and in a horizontal position.
(3) Remove the hood, and then check the
fuel level. (See page 24 for hood removal
and installation procedures.)
(4) Loosen the fuel filler cap and remove it.
(5) Slowly add fuel to the fuel tank.(6) Stop filling when the fuel level just reach-
es the bottom of the filler tube. Do not fill
up the filler tube. Because fuel expands
when it heats up, heat from the engine or
the sun can cause fuel to spill out of the
fuel tank. Do not leave the watercraft
with a full tank in direct sunlight.
(7) Wipe up any spilled fuel immediately with
a dry cloth.
(8) Securely install the fuel filler cap by tight-
ening it until it stops.
(9) Securely install the hood in its original
position.
12-stroke engine oil
2Gasoline
1Fuel filler cap
Fuel tank capacity:
To t a l :
18 L (4.8 US gal, 4.0 Imp.gal)
Reserve:
5.5 L (1.5 US gal, 1.2 Imp.gal)
UF4D71E0.book Page 29 Thursday, April 23, 2015 1:48 PM

Operation and handling requirements
31
EJU33424
Transporting
WARNING
EWJ00751
Always turn the fuel cock knob to “OFF”
when transporting the watercraft, other-
wise fuel could leak out into the engine or
engine compartment, which would create
a fire hazard.
When transporting the watercraft on a trailer,
secure the bow rope hole and stern of the
watercraft to the trailer with ropes or tie
downs. Use a rubber shock cord to secure
the steering pole to the watercraft. NOTICE:
Do not secure the steering pole with ropes
or tie downs and do not secure it to the
trailer. Also, do not transport the water-
craft with the steering pole up. Otherwise,
the steering pole could be damaged. Wrap
the ropes or tie downs with towels or ragswhere they touch the body of the water-
craft to avoid scratches or damage.
[ECJ00633]
1Rubber shock cord
2Tie down
UF4D71E0.book Page 31 Thursday, April 23, 2015 1:48 PM

Pre-operation checks
33
EJU31982
WARNING
EWJ00412
Failure to inspect or maintain the watercraft properly increases the possibility of an ac-
cident or damage to the watercraft. Do not operate the watercraft if you find any prob-
lem. If a problem cannot be corrected by the procedures provided in this manual, have
the watercraft inspected by a Yamaha dealer.
EJU41233Pre-operation checklist
Before using this watercraft, be sure to perform the checks in the following checklist.
ITEM ROUTINE PAGE
PRE-LAUNCH CHECKS
Engine compartmentVentilate the engine compartment.
Check inside the engine compartment for damage.35
Fuel systemCheck the fuel system for leakage.
Check the fuel level in the fuel tank.35
Water separatorCheck the water separator for water. 36
Engine unitCheck the exterior of the engine unit for damage. 36
Bilge waterCheck the engine compartment for bilge water. 36
BatteryCheck the battery connections and electrolyte level. 36
Steering systemCheck the steering system for proper operation. 36
Throttle leverCheck the throttle lever for proper operation.
Check the throttle lever free play.37
Engine shut-off cord (lan-
yard)Check the engine shut-off cord (lanyard) for dam-
age.38
SwitchesCheck the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.38
Storage pouchCheck the storage pouch for damage and water.
Check that the storage pouch is securely installed.38
Fire extinguisher containerCheck the fire extinguisher container for damage. 39
Fire extinguisherCheck the condition of the fire extinguisher. 39
Safety equipmentCheck that safety equipment meeting the applica-
ble regulations is on board.39
Hull and deckCheck the hull and deck for damage. 39
Jet intakeCheck the jet intake for damage and clogging. 39
HoodCheck that the hood is securely closed. 39
UF4D71E0.book Page 33 Thursday, April 23, 2015 1:48 PM

Pre-operation checks
35
EJU32282
Pre-operation check pointsEJU40686Pre-launch checks
Perform the pre-launch checks in the pre-op-
eration checklist while the watercraft is on
land.
To perform the pre-launch checks:
(1) Remove the hood. (See page 24 for hood
removal and installation procedures.)
(2) Perform the checks and make sure that
there are no malfunctioning items or oth-
er problems.
(3) After completing these checks, install the
hood in its original position.
EJU32334Engine compartment check
WARNING
EWJ00462
Failure to ventilate the engine compart-
ment could result in a fire or explosion. Do
not start the engine if there is a fuel leak.
Ventilate the engine compartment. Leave the
engine compartment open for a few minutes
to allow any fuel vapors to escape.
Make sure that there is no damage inside the
engine compartment.
EJU34208Fuel system checks
WARNING
EWJ00382
Leaking fuel can result in fire or explosion.
Check for fuel leakage regularly.
If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
watercraft unsafe to operate.
Make sure that there is no damage, leakage,
or other problem in the fuel system.
Check:
Carburetor for leakage
Fuel filler cap and seal for damage
Fuel in fuel tank for water and dirt
Fuel tank for damage and leakage
Fuel hoses and joints for damage and leak-
age
Fuel filter for leakage
Fuel cock for leakage
Fuel tank breather hose for damage and
leakage
Releasing the pressure in the fuel tank
Release the pressure in the fuel tank before
each use.
To release the pressure in the fuel tank:
(1) Loosen the fuel filler cap slowly and re-
move it to release any pressure in the fuel
tank.
(2) Securely install the fuel filler cap by tight-
ening it until it stops.
EJU32365Fuel level check
Check the fuel level in the fuel tank.
1Fuel filler cap
UF4D71E0.book Page 35 Thursday, April 23, 2015 1:48 PM