air YAMAHA SUPERJET 2003 Owners Manual

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EJU00989
To the owner/operator
Thank you for choosing a Yamaha water-
craft. This Owner’s/Operator’s Manual con-
tains information you will need for proper
operation, maintenance, and care.
A thorough understanding of these simple
instructions will help you to obtain maximum
enjoyment from your new Yamaha. If you
have any questions about the operation or
maintenance of your watercraft, please con-
sult a Yamaha dealer.
Because Yamaha has a policy of continu-
ing product improvement, this product may
not be exactly as described in this Owner’s/
Operator’s Manual. Specifications are sub-
ject to change without notice.
This manual should be considered a per-
manent part of this watercraft and should
remain with it even if the watercraft is subse-
quently sold.EJU01265
Important manual information:
In this manual, information of particular
importance is distinguished in the following
ways:
The Safety Alert Symbol means
ATTENTION! BECOME ALERT!
YOUR SAFETY IS INVOLVED!
WARNING@ Failure to follow WARNING instructions
could result in severe injury or death to
the machine operator, a bystander, or a
person inspecting or repairing the water-
craft.
@
CAUTION:@ A CAUTION indicates special precau-
tions that must be taken to avoid damage
to the watercraft.
@
NOTE:@ A NOTE provides key information to make
procedures easier or clearer.
@
EJU01266
SuperJet 700
OWNER’S/OPERATOR’S MANUAL
©2002 by Yamaha Motor Co., Ltd.
1st Edition, May 2002
All rights reserved.
Any reprinting or unauthorized use
without the written permission of
Yamaha Motor Co., Ltd.
is expressly prohibited.
Printed in Japan
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Keep away from intake grate 1 while the
engine is on. Items such as long hair,
loose clothing, or PFD straps can become
entangled in moving parts resulting in
severe injury or drowning.

Never insert any object in the jet thrust
nozzle 2. Severe injury or death could
result from coming in contact with the
rotating parts of the jet pump.

Stop the engine and remove the clip 3
from the engine shut-off switch 4 before
removing any debris or weeds that may
have collected around the jet intake.

Avoid forceful jet thrust and limited visibil-
ity while reboarding. Get to standing or
kneeling position quickly, but do not
expose yourself to forceful jet thrust.
EJU01005
Safe boating rules
Your Yamaha watercraft is legally consid-
ered a powerboat. Operation of the water-
craft must be in accordance with the rules
and regulations governing the waterway on
which it is used.
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1Fire extinguisher container
2Fuel cock knob
Use to select either normal or reserve fuel flow
from the fuel tank to the carburetors, or to shut
off fuel flow.
3Choke knob
Use to start a cold engine.
4Clip
Insert into the engine shut-off switch to enable
starting of the engine.
Remove to stop the engine or prevent acci-
dental star ting of the engine or unauthorized
use of the watercraft.
5Start switch
Push to start the engine.
6Throttle lever
Use to accelerate and decelerate.
7Engine shut-off switch
Remove the clip to stop the engine and dis-
able it from starting.8Engine stop switch
Push to stop the engine normally.
9Engine shut-off cord (lanyard)
Attach to wrist so that the engine stops if the
operator falls off the watercraft.
0Bow
AFuel tank
BBattery
CSilencer
Prevents water from getting into the engine
and reduces air intake noise.
DSpark plugs/Spark plug caps
EMuffler
FWater separator
Traps water from the breather hose to the fuel
tank.
GFuel filter
HFlush hose connector
Use to flush the engine cooling water pas-
sages.
IElectrical box
Protects electrical components from water.
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EJU01215
Choke knob
Starting a cold engine requires a richer
air-fuel mixture, which is supplied by the
choke.
Pull the knob 1 out to turn the choke on.
Push the knob in to turn the choke off.
EJU01018
Throttle lever
Squeeze the throttle lever 1 to increase
engine speed.
Release the throttle lever to decrease
engine speed or to return it to the idle posi-
tion.
EJU01019
Start switch
Push the start switch 1 (green button) to
start the engine.
NOTE:@ The engine will not start when the clip is
removed from the engine shut-off switch.
@
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EJU01346
Pre-operation checks
EJU01347
Pre-operation check list
Before operating this watercraft, perform the checks in the following check list. See the
accompanying text in this chapter for details on how to perform the checks.
WARNING@ If any item in the pre-operation check list is not working properly, have it inspected
and repaired before operating the watercraft, otherwise an accident could occur.
@
NOTE:@ Pre-operation checks should be made thoroughly each time the watercraft is used. This pro-
cedure can be completed in a short time. It is worth the time spent to assure safety and reli-
ability.
@
ITEM ROUTINE PAGE
Engine compar tment Remove hood, ventilate fuel vapors and check
electrical connections3-6
Bilge Check for water and fuel residue and remove if
necessary3-7
Throttle Check that throttle lever springs back 3-10
Steering system Check for proper steering system operation 3-10
Fuel Check fuel level and add if necessary
Check hoses and tank for leakage3-6
Water separator Check for water and drain if necessary 3-7
Battery Check electrolyte level and battery condition 3-8
Hood Check that hood latches are secured 2-3
Hull/Deck Check hull for cracks or other damage—
Jet unit Check for debris and remove if necessary 3-11
Fire extinguisher Check condition and replace if necessary 3-9
Engine shut-off cord Check condition and replace if frayed or broken 3-11
Switches Check start switch, engine stop switch and
engine shut-off switch for proper operation when
watercraft is in the water 3-12
Cooling water pilot outlet Check that water is discharged while engine is
running and watercraft is in the water3-12
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EJU01058
Jet unit
Carefully check the jet intake for weeds,
debris, or anything else that might restrict
the intake of water. If the intake is clogged,
cavitation could occur, reducing jet thrust,
and possibly damaging the jet pump.
In some cases, the engine may overheat
because of lack of cooling water, and dam-
age to the engine could result. Engine cool-
ing water is fed to the engine by the jet
pump. (See page 5-3 for jet intake cleaning
procedures.)
WARNING@
Keep away from intake grate while
engine is on. Items such as long hair,
loose clothing, or PFD straps can
become entangled in moving parts
resulting in severe injury or drowning.

Stop the engine and remove the clip
from the engine shut-off switch before
removing any debris or weeds, which
may have collected around the jet
intake.
@
EJU01059
Engine shut-off cord (lanyard)
Check that the engine shut-off cord is not
frayed or broken. If the cord is damaged,
replace it; never try to repair it or tie it
together.
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EJU01081
Beaching the watercraft
1. Make sure no obstructions, boats or
swimmers are near the beach. Release
the throttle lever about 90 m (300 ft)
before you reach the intended beaching
area.
2. Approach the beach slowly and stop the
engine before reaching land.
Remember: you need throttle to steer.
3. Get off the watercraft and pull it up on
the beach.
CAUTION:@ Small pebbles, sand, seaweed, and other
debris can be pulled into the jet intake
and impair or damage the impeller.
Always stop the engine and get off
before beaching the watercraft.
@
EJU01295
Rough water operation
The force of landing after jumping can
cause a strong impact on both the watercraft
and the operator. It is possible for the opera-
tor to hit his or her chest or jaw on the water-
craft body or handlebars and be injured. Do
not operate the watercraft with your chin
right above the handlebars or with your feet
outside the watercraft. Operating in rough
water or jumping waves can also crack the
watercraft body or damage internal parts.
Avoid operating in rough water or bad
weather conditions.
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CAUTION:@ Do not run the engine at full throttle or
for more than 15 seconds on land, other-
wise the engine may overheat and seize.
@
7. If the watercraft will be stored for a week
or more, lubricate internal engine com-
ponents to help prevent corrosion. (See
page 4-3 for lubrication procedures.)
8. Rinse the engine and engine compart-
ment with a small amount of water.
CAUTION:@ Do not use high pressure when rinsing
the engine or engine compartment as
severe damage could result.
@
9. Wipe the engine and engine compart-
ment dry with a clean cloth (repeat
step 3, if necessary).
10. Wipe the hull, steering pole, handlebars,
and jet unit dry with a clean cloth.
11. Spray a rust inhibitor on metallic parts to
minimize corrosion.
12. Allow the engine compartment to air dry
completely before reinstalling the hood.
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4-8
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EJU01301
Owner’s/Operator’s Manual
and tool kit
It is advisable always to carry the
Owner’s/Operator’s Manual and tool kit with
you whenever you use the watercraft. For
your convenience, a storage pouch 1 is
provided on the watercraft for the manual
and tool kit.
NOTE:@ To protect these materials from water dam-
age, it would be a good idea to put them in a
waterproof bag.
@
The service information included in this
manual is intended to provide you, the
owner, with the necessary information for
completing your own preventive mainte-
nance and minor repairs. The tools provided
in the tool kit 2 are sufficient for this pur-
pose, except that a torque wrench may also
be necessary to tighten nuts and bolts.
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Inspecting the fuel system
WARNING@ Gasoline is highly flammable and explo-
sive. A fire or explosion can cause
severe injury or death. Shut off the
engine. Do not smoke. Avoid spilling
gasoline.
@
Check the fuel system for leaks, cracks,
or malfunctions. If any problem is found, do
the necessary repair or replacement as
required. If repair is necessary, consult a
Yamaha dealer.
Check:

Carburetor for leakage.

Fuel pump for malfunction or leakage.

Fuel tank for water or dirt.

Fuel tank for damage, cracks or leakage.

Fuel hose joint for leakage.

Fuel hose for cracks or other damage.

Fuel filter for leakage.

Fuel cock for leakage.

Air vent check valve for leakage.

Fuel tank filler cap for damage.
WARNING@ Failure to check for and repair any fuel
leakage may result in fire or explosion.
@
UF1N71.book Page 10 Tuesday, June 4, 2002 3:34 PM