2008 YAMAHA SUPERJET fuel filter

Features and functions
16
1Fire extinguisher container
2Fuel cock knob
3Choke knob
4Clip
5Start switch
6Throttle lever
7Engine shut-off switch
8Engine stop switch
9Engine shut-off cord (lanyard)
10Bow
11Fuel tank
12Battery
13Silencer
14Spark plugs/Spark plug caps
15Muffler
16Water separator
17Fuel filter
18Flushing hose connector
19Electrical box
UF2F70E0.book Page 16 Tuesday, April 17, 2007 9:56 AM

Maintenance and care
51
EJU33820Periodic maintenance chart
The following chart gives general guidelines for periodic maintenance. However, maintenance
may need to be performed more frequently depending on your operating conditions.
This “” mark indicates maintenance that you may do yourself.
This “” mark indicates work to be done by a Yamaha dealer.
Item OperationInitial Thereafter every
Page 10
hours50
hours100
hours100
hours200
hours
6
months12
months12
months24
months
Spark plugsCheck, clean, adjust 57
Lubrication pointsLubricate 58
Intermediate hous-
ingLubricate 58
Fuel systemCheck 53
Fuel filterCheck, clean, replace 53
Fuel tankCheck, clean 53
CarburetorCheck, adjust 61
Trolling speedCheck, adjust 61
Carburetor throt-
tle shaftCheck—
Cooling water pas-
sagesFlush
*46
Bilge strainerClean—
ImpellerCheck—
Jet thrust nozzle
angleCheck, adjust 53
Handlebar pivot
shaftCheck—
Steering frictionCheck, adjust 54
Throttle cableCheck, adjust 56
Choke cableCheck, adjust 59
BatteryCheck, charge 60
Rubber couplingCheck—
Engine mountCheck—
UF2F70E0.book Page 51 Tuesday, April 17, 2007 9:56 AM

Maintenance and care
53
EJU34201Checking the fuel system
WARNING
EWJ00370
Gasoline is highly flammable and explo-
sive. Failure to check for and repair any
fuel leakage could result in a fire or explo-
sion. A fire or explosion can cause severe
injury or death. Shut the engine off. Do not
smoke. Avoid spilling gasoline.
Check the fuel system for leaks, cracks, and
malfunctions. If any problem is found, do the
necessary repair or replacement as required.
If repair is necessary, consult a Yamaha deal-
er.
Check:

Carburetor for leakage.

Fuel tank filler cap and seal for damage.

Fuel in fuel tank for water and dirt.

Fuel tank for damage, cracks, and leakage.

Fuel hoses and joints for damage, cracks,
and leakage.

Fuel filter for leakage.

Fuel cock for leakage.

Air vent check valve for leakage.EJU34220Fuel filter
This watercraft is equipped with a one-piece,
disposable fuel filter. The fuel filter should be
replaced after the initial 10 hours or first
month of operation and every 200 hours or 24
months thereafter, or if water is found in the fil-ter. Have a Yamaha dealer replace the fuel fil-
ter if necessary.
WARNING
EWJ00360
Do not try to replace the fuel filter yourself.
An incorrectly installed filter can leak gas-
oline, which could result in a fire or explo-
sion. If necessary, have a Yamaha dealer
replace the fuel filter.
EJU34230Fuel tank
Check the fuel tank for leakage and for water
in the tank. If water is found in the fuel system,
or if the fuel tank needs to be cleaned, have a
Yamaha dealer service the watercraft.
EJU34321Checking the jet thrust nozzle angle
Check the handlebars and jet thrust nozzle for
smooth operation.
1Fuel filter
1Fuel tank
UF2F70E0.book Page 53 Tuesday, April 17, 2007 9:56 AM

Trouble recovery
63
EJU34560
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.
EJU34570Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Engine shut-
off switchClip not in place Install clip
19
Fuse Burned out Replace fuse and
check wiring67
Battery Run down Recharge 60
Poor terminal con-
nectionsTighten as required
60
Terminal corroded Clean 48
Starter motor Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Fuel cock Turned to “OFF”Turn fuel cock knob to
“ON”18
Fuel Empty Refill as soon as pos-
sible26
Stale or contaminat-
edHave serviced by
Yamaha dealer53
Fuel tank Water or dirt present Have serviced by
Yamaha dealer53
Spark plug Fouled or defective Clean or replace 57
Spark plug
capNot connected or
looseConnect properly
57
Crankcase Filled with water Crank engine with
plug out until clean68
Fuel filter Clogged or water
pooledHave serviced by
Yamaha dealer53
Choke Knob moves back on
its ownTighten choke knob
adjusting nut59
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Trouble recovery
64
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as pos-
sible26
Stale or contaminat-
edHave serviced by
Yamaha dealer53
Too much oil in fuel
mixing ratioCorrect fuel-to-oil ra-
tio to 50:125
Choke Knob is left pulled Push fully in 20
Fuel filter Clogged or water
pooledHave serviced by
Yamaha dealer53
Fuel tank Water or dirt present Have serviced by
Yamaha dealer53
Spark plug Fouled or defective Replace 57
Incorrect heat range Replace 57
Gap incorrect Adjust 57
Spark plug
capLoose Connect properly 57
Cracked, torn or dam-
agedReplace
—
Electrical wir-
ingLoose electrical con-
nectionsTighten or connect
properly—
Carburetor Incorrect idle adjust-
mentAdjust idle
61
Clogged Have serviced by
Yamaha dealer61
Watercraft slow or
loses powerCavitation Jet intake clogged Clean 65
Impeller damaged or
wornHave serviced by
Yamaha dealer65
Engine over-
heatedJet intake clogged Clean
65
Fuel filter Clogged Have serviced by
Yamaha dealer53
Spark plug Fouled or defective Replace 57
Incorrect heat range Replace 57
Gap incorrect Adjust 57
Spark plug
capsLoose Connect properly
57
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer53 TROUBLE POSSIBLE CAUSE REMEDY PAGE
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Index
2-stroke engine oil .................................... 25
B
Battery ................................................ 29, 48
Battery, checking...................................... 60
Battery, jumping ....................................... 66
Beaching the watercraft ........................... 43
Bilge ......................................................... 29
Boarding and starting in deep water ........ 39
Boarding and starting in shallow water .... 38
Bow rope hole .......................................... 22
C
Capsized watercraft ................................. 40
Carburetor, adjusting................................ 61
Choke cable, adjusting ............................. 59
Choke knob .............................................. 20
Cleaning the watercraft ............................ 48
Cooling water pilot outlet .................... 20, 32
Craft Identification Number (CIN) ............... 1
Cruising limitations ..................................... 8
E
Emergency procedures ............................ 65
Engine break-in ........................................ 33
Engine compartment ................................ 28
Engine overheat warning system ............. 22
Engine serial number ................................. 1
Engine shut-off cord ................................. 32
Engine shut-off switch .............................. 19
Engine stop switch ................................... 19
Enjoy your watercraft responsibly ............ 14
F
Filling the fuel tank ................................... 26
Fire extinguisher....................................... 29
Flushing the cooling system ..................... 46
Fuel and oil............................................... 25
Fuel cock knob ......................................... 18
Fuel filter .................................................. 53
Fuel system ........................................ 28, 47
Fuel system, checking.............................. 53
Fuel tank .................................................. 53
Fuel tank filler cap .................................... 18
Fuse, replacing......................................... 67
G
Gasohol .................................................... 25
Gasoline ................................................... 25Getting to know your watercraft ............... 36
H
Hazard information ................................... 12
Hood ......................................................... 17
Hull and deck ........................................... 28
I
Identification numbers ................................ 1
Important labels .......................................... 2
J
Jet intake .................................................. 31
Jet intake and impeller, cleaning .............. 65
Jet thrust nozzle angle, adjusting ............. 55
Jet thrust nozzle angle, checking ............. 53
Jumper cables, connecting ...................... 66
K
Kneeling ................................................... 37
L
Labels, other .............................................. 6
Labels, warning .......................................... 3
Launching the watercraft .......................... 33
Learning to operate your watercraft ......... 36
Leaving the watercraft .............................. 35
Limitations on who may operate
the watercraft .......................................... 7
Lubrication................................................ 47
Lubrication points ..................................... 58
M
Main components, location of .................. 15
Maintenance and adjustments ................. 49
Mixing fuel and oil .................................... 25
O
Operating positions .................................. 37
Operating your watercraft ......................... 36
Operation ................................................. 33
Operation of controls and
other functions ...................................... 17
Operation requirements ............................. 9
Owner’s/operator’s manual and tool kit .... 49
P
Periodic maintenance chart ...................... 51
Post-operation care .................................. 43
Pre-operation check list ............................ 27
Pre-operation check points ...................... 28
Pre-operation checks ............................... 27
Primary Identification (PRI-ID) number ...... 1
UF2F70E0.book Page 1 Tuesday, April 17, 2007 9:56 AM