fuel YAMAHA SUPERJET 2015 User Guide

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]
1
Rubber shock cord
2 Tie down
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First-time operation
32
EJU32757
Engine break-in
NOTICE
ECJ00432
Failure to perform the engine break-in
could result in reduced engine life or even
severe engine damage.
The engine break-in is essential to allow the
various components of the engine to wear
and polish themselves to the correct operat-
ing clearances. This ensures proper perfor-
mance and promotes longer component life.
To perform the engine break-in:
(1) Fill the fuel tank with fuel in a fuel-to-oilratio of 25:1. (See page 28 “Mixing fuel
and oil” and “Filling the fuel tank” for in-
formation on filling the fuel tank.)
(2) Launch the watercraft and start the en- gine. (See page 41 for information on
starting the engine.)
(3) For the first 5 minutes, operate with the engine at idling speed.
(4) For the first tankful of fuel, squeeze the throttle lever slowly and operate at 3/4
throttle or less.
(5) Fill the fuel tank once more with fuel in a fuel-to-oil ratio of 25:1, and then operate
with the engine at any speed.
After the engine break-in is complete, fill the
fuel tank with fuel in a fuel-to-oil ratio of 50:1.
The watercraft can be operated normally.
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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.
ITEMROUTINEPAGE
PRE-LAUNCH CHECKS
Engine compartment Ventilate the engine compartment.
Check inside the engine compartment for damage.
35
Fuel system Check the fuel system for leakage.
Check the fuel level in the fuel tank.
35
Water separator Check the water separator for water. 36
Engine unit Check the exterior of the engine unit for damage. 36
Bilge water Check the engine compartment for bilge water. 36
Battery Check the battery connections and electrolyte level. 36
Steering system Check the steering system for proper operation. 36
Throttle lever Check 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
Switches Check the start switch, engine stop switch, and en-
gine shut-off switch for proper operation.
38
Storage pouch Check the storage pouch for damage and water.
Check that the storage pouch is securely installed.
38
Fire extinguisher container Check the fire extinguisher container for damage. 39
Fire extinguisher Check the condition of the fire extinguisher. 39
Safety equipment Check that safety equipment meeting the applica-
ble regulations is on board.
39
Hull and deck Check the hull and deck for damage. 39
Jet intake Check the jet intake for damage and clogging. 39
Hood Check that the hood is securely closed. 39
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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 hoodremoval 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
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Pre-operation checks
36
Add fuel if necessary. (See page 29 for infor-
mation on filling the fuel tank.)
EJU32424Water separator check
Make sure that no water has collected in the
water separator. If water has collected in the
water separator, drain it. (See page 22 for in-
formation on draining the water separator.)
EJU40182Engine unit check
Check the exterior of the engine unit for dam-
age or other problem.
EJU41012Bilge water check
Make sure that no bilge water has collected in
the engine compartment. If bilge water has
collected in the engine compartment, wipe it
up with a dry cloth. NOTICE: Excessive wa-
ter in the engine compartment can splash
into the engine, which can result in severe
damage.
[ECJ00342]
EJU32485
Battery checks
Make sure that the battery terminals and
breather hose are not damaged and that the
battery leads and breather hose are connect-
ed properly. WARNING! Fire or explosion
could result if the breather hose is dam- aged, obstructed, or not connected prop-
erly.
[EWJ00452]
Make sure that the electrolyte level is be-
tween the minimum and maximum level
marks.
WARNING! Never operate the wa-
tercraft if the battery does not have suffi-
cient power to start the engine or if it
shows any other signs of decreased pow-
er. Loss of battery power may leave you
stranded.
[EWJ01241]
Make sure that the battery is securely held in
place.
EJU32614Steering system checks
Turn the handlebars to the right and left sev-
eral times to make sure that operation is
smooth and unrestricted throughout the
1 Water separator
1Positive (+) battery terminal: Red lead
2 Negative (–) battery terminal: Black lead
3 Breather hose
1 Maximum level mark
2 Minimum level mark
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Operation
42
(2) Turn the fuel cock knob to “ON”.
(3) Attach the engine shut-off cord (lanyard)to your left wrist, and then attach the clip
to the engine shut-off switch. (See page
19 for information on operating the en-
gine shut-off switch.) WARNING! Check
that the engine shut-off cord (lanyard)
is attached correctly. If the engine
shut-off cord (lanyard) is not attached
correctly, it may not pull free when the
operator falls off, allowing the water-
craft to continue to run and cause an
accident.
[EWJ00582]
(4) Pull the choke knob all the way out to start a cold engine.
TIP:
The choke should not be used when the en-
gine is warm.
(5) While lightly squeezing the throttle lever,push the start switch (green button) to
start the engine. (See page 19 for infor-
mation on operating the start switch.)
WARNING! Do not apply too much throttle when starting the engine, oth-
erwise the watercraft will accelerate
unexpectedly. This could cause a col-
lision or cause the operator to be
thrown overboard.
[EWJ00592]
(6) After the engine has warmed up, push the choke knob in to its original position.
TIP:
If the choke knob is left pulled out, the engine
will stall.
1Clip
2 Engine shut-off switch
3 Engine shut-off cord (lanyard)
12
3
START
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Care and storage
50
EJU41192
Post-operation care
WARNING
EWJ00321
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 deteriora-
tion of the jet pump and hull. Marine organ-
isms and corrosion are some of the
conditions that can shorten the life of many
watercraft components.
EJU33519Flushing the cooling water passages
NOTICE
ECJ01361
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 24 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 en-
gine. Immediately after the engine starts,
turn the water supply on gradually until
1Garden hose adapter
1 Flushing hose connector
2 Flushing hose connector cap
3 Garden hose adapter
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Care and storage
54
EJU33484
Long-term storage
WARNING
EWJ00321
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.
Storage for long periods of time, such as win-
ter storage, requires preventive maintenance
to ensure against deterioration. It is advisable
to have the watercraft serviced by a Yamaha
dealer prior to storage.
However, the following procedures can be
performed easily by the owner.
EJU40763Cleaning
(1) Flush the cooling water passages. (Seepage 50 for information on flushing the
cooling water passages.)
TIP:
If you will be storing the watercraft for a pro-
longed period, such as winter storage, top off
the fuel tank with fresh gasoline and add fuel
stabilizer and conditioner to the fuel tank ac-
cording to the manufacturer’s instruction be-
fore starting the engine.
(2) Clean the watercraft. (See page 51 for in-formation on cleaning the watercraft.)
Wax the hull with a non-abrasive wax.
EJU40794Lubrication
Use a suitable marine grease applicator and
spray a rust inhibitor between the inner and
outer cables to lubricate the cables and
purge out any dirt and moisture.
To keep moving parts sliding or rotating
smoothly, lubricate them with water-resistant
grease.
Throttle cable (carburetor end) and choke
cable (carburetor end)
Throttle cable (throttle lever end)
Squeeze the throttle lever and remove the
seal. Spray a rust inhibitor into the outer ca-
ble. Refit the seal securely.
Recommended water-resistant grease:Yamaha Marine Grease/Yamaha
Grease A
1 Seal
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Maintenance
59
EJU40831Periodic maintenance chart
The periodic maintenance chart gives general guidelines for periodic maintenance. Have a
Yamaha dealer perform the checks in the following chart. However, maintenance may need to be performed more frequently depending on your operating conditions. If you have any
questions, consult a Yamaha dealer.
This “ ” mark indicates maintenance that you may do yourself.
This “ ” mark indicates items to be checked and serviced by a Yamaha dealer.
Item OperationInitial
Thereafter every
Page
10
hours 50 hours
100
hours 200
hours
6
months 12
months 12
months 24
months
Spark plugs Check, clean, replace 60
Lubrication points Lubricate 54
Intermediate
housing Lubricate
61
Fuel system Check —
Fuel filter Check
61
Check, replace —
Fuel tank Check, clean —
Carburetor Check, adjust —
Engine idling
speed Check, adjust
62
Carburetor throttle
shaft Check
—
Bilge strainer Clean —
Impeller Check —
Jet thrust nozzle
angle Check, adjust
—
Handlebar pivot
shaft Check, adjust
—
Steering friction Check, adjust —
Throttle cable Check, adjust —
Choke cable Check, adjust 61
Battery Check, charge —
Rubber coupling Check —
Engine mount Check —
Nuts and bolts Check —
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Maintenance
61
(3) Wipe off any water or dirt inside thespark plug cap.
(4) Install the spark plug cap by pushing it down until it is securely installed in its
original position.
(5) Securely install the hood in its original position.
EJU41181Lubrication points
Lubricate moving parts with water-resistant
grease. (See page 54 for information on the
main lubrication points.)
Intermediate housing
Fill the intermediate housing with water-resis-
tant grease through the grease nipple using a
grease gun.
EJU34226Checking the fuel filter
Check the fuel filter. The fuel filter should be
replaced if water or dirt is found in the filter. Have a Yamaha dealer replace the fuel filter if
necessary.
EJU34442Adjusting the choke cable
Check that the choke cable is properly ad-
justed.
To adjust the choke cable:
(1) Pull the choke knob out until it stops, and
then release the knob. The knob should
not move.
(2) If the choke knob moves back on its own, tighten the choke knob adjusting
nut slightly. If the knob is difficult to
move, loosen the adjusting nut slightly.
EJU34464Adjusting the carburetor
NOTICE
ECJ00173
If the carburetor settings are disturbed by
someone who does not have the neces-
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
Grease quantity: Initial 10 hours or 1 month:
20.0–22.0 cm³ (0.68–0.74 US oz,
0.71–0.78 Imp.oz)
Every 100 hours or 12 months:
3.0–5.0 cm³ (0.10–0.17 US oz,
0.11–0.18 Imp.oz)
1Fuel filter
1 Choke knob adjusting nut
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