2003 YAMAHA SUPERJET fuse

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4
EJU01086
MAINTENANCE AND
CARE
Storage ...................................................... 4-1
Flushing the cooling system .................. 4-1
Lubrication .............................................. 4-3
Fuel system ............................................ 4-5
Battery .................................................... 4-5
Cleaning the watercraft .......................... 4-6
Maintenance and adjustments .............. 4-7
Owner’s/Operator’s Manual and
tool kit ..................................................... 4-8
Periodic maintenance chart ................... 4-9
Inspecting the fuel system ................... 4-10
Inspecting the jet thrust nozzle
angle ..................................................... 4-12
Inspecting and adjusting the throttle
cable ..................................................... 4-12
Cleaning and adjusting the spark
plugs ..................................................... 4-13
Lubrication points ................................. 4-14
Adjusting the choke cable .................... 4-16
Inspecting the battery .......................... 4-17
Adjusting the carburetor ...................... 4-19
Replacing the fuse ............................... 4-20
Adjusting the steering friction .............. 4-20
Adjusting the jet thrust nozzle angle ... 4-21
Specifications ........................................ 4-23
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4-20
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EJU01263
Replacing the fuse
The fuse is in the electrical box 1.
To replace the fuse:
1. Remove the cap 2, pull out the red lead,
and bring the fuse holder 3 out of the
electrical box.
2. Open the fuse holder and replace the
fuse 4 with one of the correct amper-
age.
WARNING@ Do not use fuses of higher amperage that
those recommended. Substitution of a
fuse of improper rating can cause exten-
sive electrical system damage and possi-
ble fire.
@
Fuse amperage: 10 A
EJU01304
Adjusting the steering friction
The amount of friction in the steering can
be adjusted to suit operator preference.
To adjust the friction:
1. Loosen the four screws, and then
remove the handlebar cover.
2. Turn the handlebars as far as possible to
starboard (right).
3. Loosen the locknut 2.
4. Tighten or loosen the adjusting nut 1
until the desired amount of friction is
reached.
5. Hold the adjusting nut with one wrench
while tightening the locknut with another
wrench.
Tightening torque:
29 N·m (2.9 kgf·m, 21 ft·lb)
UF1N71.book Page 20 Tuesday, June 4, 2002 3:34 PM

5-1
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Troubleshooting
If you have any trouble with your watercraft, use this section to check for the possible
cause.
If you cannot find the cause, or if the procedure for replacement or repair is not described
in this Owner’s/Operator’s Manual, have a Yamaha dealer perform the necessary service.
EJU01367
Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
startStarter motor does not turn over
Engine shut-
off switch Clip not in place Install clip
2-5
Fuse Burned out Replace fuse and check
wiring4-20
Battery Run down Recharge 4-17
Poor terminal connec-
tionsTighten as required
4-17
Starter motor Faulty Have serviced by
Yamaha dealer—
Starter motor turns over
Fuel cock Turned to “OFF”Turn fuel cock knob to
“ON”2-4
Fuel Empty Refill as soon as possi-
ble3-4
Stale or contaminated Have serviced by
Yamaha dealer4-10
Fuel tank Water or dirt present Have serviced by
Yamaha dealer4-11
Spark plug Fouled or defective Clean or replace 4-13
Spark plug cap Not connected or loose Connect properly 4-13
Crankcase Filled with water Crank engine with plug
out until clean5-7
Fuel filter Clogged or water
pooledHave serviced by
Yamaha dealer4-11
Choke Knob moves back on
its ownTighten choke knob
adjusting nut4-16
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6-2
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Operation requirements .......................... 1-8
Other labels ............................................. 1-5
Owner’s/Operator’sManualandtoolkit ...... 4-8
P
Periodic maintenance chart..................... 4-9
Post-operation checks........................... 3-31
Pre-operation check list........................... 3-5
Pre-operation check points ..................... 3-6
Pre-operation checks .............................. 3-5
Primary Identification (PRI-ID) number ... 1-1
R
Recommended equipment .................... 1-10
Replacing the fuse ................................ 4-20
Rough water operation .......................... 3-30
S
Safe boating rules ................................. 1-12
Safety information ................................... 1-6
Specifications ........................................ 4-23
Standing ................................................ 3-25
Starting the engine ................................ 3-15
Starting the watercraft ........................... 3-21
Start switch.............................................. 2-6
Steering pole .................................. 2-8, 3-10
Steering system ............................. 2-7, 3-10
Stopping the engine .............................. 3-18
Stopping the watercraft ......................... 3-29
Storage.................................................... 4-1
Storage pouch ....................................... 2-10
Submerged watercraft ............................. 5-7
Switches ................................................ 3-12
T
Throttle .................................................. 3-10
Throttle lever ........................................... 2-6
Towing the watercraft .............................. 5-6
Transporting .......................................... 3-33
Troubleshooting ...................................... 5-1
Troubleshooting chart ............................. 5-1
Turning the watercraft ........................... 3-27
W
Warning labels ................................. 1-2, 1-3
Watercraft characteristics...................... 1-11
Water separator ...................................... 3-7
UF1N71.book Page 2 Tuesday, June 4, 2002 3:34 PM