2007 YAMAHA VX DELUXE check engine

Maintenance and care
74
CAUTION:
ECJ00190
If oil is leaking or the oil pressure warning
indicator comes on when the engine is
running, immediately shut the engine off
and have a Yamaha dealer check the wa-
tercraft. Continuing to operate the engine
under such conditions could cause severe
engine damage.
EJU34310Air filter element
Have a Yamaha dealer check and clean or re-
place the air filter element every 12 months or
every 100 hours of operation.
EJU34320Checking the jet thrust nozzle angle
Check the handlebars and jet thrust nozzle for
smooth operation.
Turn the handlebars as far as possible to the
right and left and check that the difference of
distances A and B between the jet thrust noz-
zle and the nozzle is within specification.
If the steering is stiff or misadjusted, have a
Yamaha dealer service it.
EJU34350Checking the shift cable (for VX
Deluxe/VX Cruiser)
Place the shift lever in the reverse position.
Make sure that the reverse gate makes con-
tact with the stopper.Difference of A and B:
Maximum 5 mm (0.20 in)
1Stopper
UF1K72E0.book Page 74 Wednesday, August 2, 2006 10:43 AM

Maintenance and care
75
If the reverse gate does not make contact with
the stopper, have a Yamaha dealer service it.
EJU34360Checking and adjusting the throttle
cable
Check that the throttle cable moves back to
the set position smoothly and that the throttle
lever free play is within specification.
(1) Squeeze and release the throttle lever. If
the throttle lever does not return smooth-
ly, have a Yamaha dealer service it.
(2) Adjust the free play by loosening the lock-
nut and turning the adjuster.
EJU34391Cleaning and adjusting the spark
plugs
The spark plug is an important engine compo-
nent and is easy to inspect. The condition of
the spark plug can indicate something about
the condition of the engine. For example, if
one spark plug has a distinctly different color,
the engine could require servicing. Do not at-
tempt to diagnose any problems yourself.
Have a Yamaha dealer service the watercraft.
Remove and inspect the spark plugs periodi-
cally; heat and deposits will cause the sparkplugs to slowly break down and erode. If elec-
trode erosion becomes excessive, or if carbon
and other deposits are excessive, replace the
spark plug with the specified plug.
To remove a spark plug:
(1) Remove the seat. (See page 26 for seat
removal and installation procedures.)
(2) Remove the spark plug cap.
CAUTION:
ECJ00210
Do not use any tools to remove or install
the spark plug cap, otherwise the ignition
coil coupler could be damaged. The spark
plug cap may be difficult to remove be-
cause the rubber seal on the end of the
cap fits tightly. To remove the spark plug
cap, simply twist it back and forth while
pulling it up; to install it, twist it back and
forth while pushing it down.
(3) Remove the spark plug.
Measure the spark plug gap with a wire
thickness gauge. Replace the spark plug
or adjust the gap to specification if neces-
sary.1Locknut
2Adjuster
3Throttle lever free play
Throttle lever free play:
4.0–7.0 mm (0.16–0.28 in)
Specified spark plug:
CR9EB
1Spark plug gap
Spark plug gap:
0.7–0.8 mm (0.028–0.031 in)
UF1K72E0.book Page 75 Wednesday, August 2, 2006 10:43 AM

Maintenance and care
78
(1) Remove all of the battery caps.
(2) If the electrolyte level is low, add distilled
water to raise it to the specified level.
(3) Set the charging rate to 1.9 ampere and
charge the battery slowly until the explo-
sive gases are discharged vigorously
from the battery cells.
To install the battery:
(1) Place the battery in the battery compart-
ment and connect the battery leads to the
battery terminals.
(2) Connect the breather hose to the battery.
(3) Secure the battery in place.
WARNING
EWJ00400
Be sure to connect the breather hose to
the battery. Fire or explosion could result
if the breather hose is damaged, obstruct-
ed, or not connected properly.
CAUTION:
ECJ00260
After installation, make sure that the bat-
tery leads are properly connected to the
battery terminals.
EJU34490Fuel injection system
The fuel injection system was set at the
Yamaha factory. If the fuel injection systemneeds to be adjusted, have a Yamaha dealer
service the watercraft.
CAUTION:
ECJ00220
Do not attempt to adjust the fuel injection
system. If the settings are disturbed by
someone who does not have the neces-
sary technical knowledge, poor engine
performance and damage may result.
EJU34500Checking the trolling speed
(1) Place the watercraft in the water.
(2) Start the engine and warm it up. Use the
tachometer in the multifunction informa-
tion center to check the trolling speed.
If the trolling speed is out of specification,
have a Yamaha dealer service the watercraft.
1Positive (+) battery terminal: Red lead
2Negative (–) battery terminal: Black lead
3Breather hose
Trolling speed:
1650 ±50 r/min
UF1K72E0.book Page 78 Wednesday, August 2, 2006 10:43 AM

Trouble recovery
80
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.
EJU34591Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Yamaha Se-
curity Sys-
tem (VX
Deluxe/VX
Cruiser)Lock mode selected Select unlock mode
32
Engine shut-
off switchClip not in place Install clip
28
Fuse Burned out Replace the fuse and
check wiring84
Battery Run down Recharge 77
Poor terminal con-
nectionsTighten as required
77
Terminal corroded Clean 68
Starter motor Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 29
Fuel Empty Refill as soon as pos-
sible42
Stale or contaminat-
edHave serviced by
Yamaha dealer73
Fuel tank Water or dirt present Have serviced by
Yamaha dealer73
Spark plug Fouled or defective Clean or replace 75
Spark plug
capNot connected or
looseConnect properly
75
Connected to wrong
cylinderConnect properly
75
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
UF1K72E0.book Page 80 Wednesday, August 2, 2006 10:43 AM

Trouble recovery
81
Engine runs irregu-
larly or stallsFuel Empty Refill as soon as pos-
sible42
Stale or contaminat-
edHave serviced by
Yamaha dealer73
Fuel tank Water or dirt present Have serviced by
Yamaha dealer73
Spark plug Fouled or defective Replace 75
Incorrect heat range Replace 75
Gap incorrect Adjust 75
Spark plug
capLoose Connect properly 75
Cracked, torn, or
damagedReplace
—
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel injec-
tion systemFaulty or clogged in-
jectorsHave serviced by
Yamaha dealer—
Warning light or in-
dicator blinksFuel level Empty Refill as soon as pos-
sible42
Engine over-
heatedJet intake clogged Clean
82
Check engine
warningFaulty sensors Have serviced by
Yamaha dealer37
Watercraft slow or
loses powerYamaha Se-
curity Sys-
tem (VX
Deluxe/VX
Cruiser)Low-RPM mode se-
lectedSelect normal mode
33
Cavitation Jet intake clogged Clean 82
Impeller damaged or
wornHave serviced by
Yamaha dealer82
Engine over-
heat warningEngine speed reduc-
tion control activatedClean jet intake and
cool engine36
Oil pressure
warningEngine speed reduc-
tion control activatedAdd oil
35
Spark plug Fouled or defective Replace 75
Incorrect heat range Replace 75
Gap incorrect Adjust 75
Spark plug
capsLoose Connect properly
75
Electrical wir-
ingLoose connection Tighten or connect
properly—
Fuel Stale or contaminat-
edHave serviced by
Yamaha dealer73
Air filter Clogged or oil buildup Have serviced by
Yamaha dealer74 TROUBLE POSSIBLE CAUSE REMEDY PAGE
UF1K72E0.book Page 81 Wednesday, August 2, 2006 10:43 AM

Trouble recovery
82
EJU34620
Emergency procedures EJU34630Cleaning the jet intake and impeller
If weeds or debris get caught in the jet intake
or impeller, cavitation can occur, causing jet
thrust to decrease even though engine speed
rises. If this condition is allowed to continue,
the engine will overheat and may seize. If
there is any sign that the jet intake or impeller
is clogged with weeds or debris, return to
shore and check the intake and impeller. Al-
ways stop the engine before beaching the wa-
tercraft.
WARNING
EWJ00780
Before attempting to remove weeds or de-
bris from the jet intake or impeller area,
shut the engine off and remove the clip
from the engine shut-off switch. Severe in-
jury or death could result from coming incontact with the rotating parts of the jet
pump.
CAUTION:
ECJ00650
If weeds or debris get caught in the jet in-
take, do not operate the watercraft above
trolling speed until they have been re-
moved.
(1) Turn the watercraft on its side as shown.
UF1K72E0.book Page 82 Wednesday, August 2, 2006 10:43 AM

Index
A
Air filter element ....................................... 74
Approval label of emission control
certificate ................................................ 3
B
Battery ................................................ 47, 68
Battery, checking...................................... 77
Battery, jumping ....................................... 83
Beaching the watercraft ........................... 63
Bilge ......................................................... 46
Boarding alone ......................................... 57
Boarding and starting from a dock ........... 57
Boarding and starting in deep water ........ 57
Boarding and starting in shallow water .... 56
Boarding with passengers ........................ 58
Bow eye ................................................... 31
Builder’s plate............................................. 2
C
Capsized watercraft ................................. 60
Check engine warning indicator ............... 37
Cleaning the watercraft ............................ 68
Cooling water pilot outlet .................... 29, 50
Cruising limitations ................................... 13
D
Docking the watercraft ............................. 63
E
Emergency procedures ............................ 82
Emission control information
(for Canada only) .................................... 3
Engine break-in ........................................ 51
Engine compartment ................................ 45
Engine oil ................................................. 42
Engine oil and oil filter .............................. 73
Engine oil level ......................................... 45
Engine overheat warning indicator ........... 36
Engine serial number ................................. 1
Engine shut-off cord ................................. 50
Engine shut-off switch .............................. 28
Engine stop switch ................................... 28
Enjoy your watercraft responsibly ............ 21
F
Filling the fuel tank ................................... 42
Fire extinguisher....................................... 48
Flushing the cooling system ..................... 66
Front storage compartment ...................... 38Fuel and oil............................................... 41
Fuel injection system ................................ 78
Fuel level .................................................. 45
Fuel level meter ........................................ 34
Fuel level warning indicator ...................... 35
Fuel system .............................................. 67
Fuel system, checking .............................. 73
Fuel tank .................................................. 73
Fuel tank filler cap .................................... 27
Fuses, replacing ....................................... 84
G
Gasohol .................................................... 41
Gasoline ................................................... 41
Getting to know your watercraft ............... 54
Glove compartment .................................. 39
H
Handgrip ................................................... 31
Hazard information ................................... 17
Hood ......................................................... 26
Hour meter/voltmeter ............................... 35
Hull and deck ........................................... 45
Hull Identification Number (HIN)................. 1
I
Identification numbers ................................ 1
Important labels .......................................... 5
J
Jet intake .................................................. 49
Jet intake and impeller, cleaning .............. 82
Jet thrust nozzle angle, checking ............. 74
Jumper cables, connecting ...................... 83
L
Labels, other .............................................. 9
Labels, warning .......................................... 6
Launching the watercraft .......................... 52
Learning to operate your watercraft ......... 54
Leaving the watercraft .............................. 54
Limitations on who may operate the
watercraft .............................................. 12
“L-MODE” indicator light
(for VX Deluxe/VX Cruiser) ................... 38
Lubrication................................................ 67
Lubrication points ..................................... 76
M
Main components, location of .................. 22
Maintenance and adjustments ................. 69
UF1K72E0.book Page 1 Wednesday, August 2, 2006 10:43 AM

Index
Manufactured date label............................. 4
Model information (for Europe only) ........... 2
Multifunction information center ......... 34, 51
O
Oil pressure warning indicator.................. 35
Operating your watercraft......................... 54
Operation ................................................. 51
Operation of controls and other
functions ............................................... 26
Operation requirements ........................... 14
Owner’s/operator’s manual and tool kit .... 70
P
Periodic maintenance chart...................... 71
Post-operation care .................................. 64
Pre-operation check list............................ 43
Pre-operation check points ...................... 45
Pre-operation checks ............................... 43
Primary Identification (PRI-ID) number ...... 1
R
Recommended equipment ....................... 16
Remote control transmitter
(for VX Deluxe/VX Cruiser) ................... 27
Reverse on waterways
(for VX Deluxe/VX Cruiser) ................... 63
Riding with passengers ............................ 55
Rough water operation ............................. 63
S
Safe boating rules .................................... 20
Seat .......................................................... 26
“SECURITY” indicator light
(for VX Deluxe/VX Cruiser) ................... 37
Selecting the normal mode/low-RPM
mode (for VX Deluxe/VX Cruiser) ......... 33
Shift cable, checking
(for VX Deluxe/VX Cruiser) ................... 74
Shift lever and reverse gate
(for VX Deluxe/VX Cruiser) ................... 49
Shift lever (for VX Deluxe/VX Cruiser) ..... 30
Spark plugs, cleaning and adjusting ........ 75
Speedometer............................................ 34
Start switch............................................... 29
Starting the engine ................................... 52
Starting the watercraft .............................. 56
Steering system ................................. 30, 48
Stern drain plugs ...................................... 47Stern eyes ................................................ 31
Stopping the engine ................................. 54
Stopping the watercraft ............................ 62
Storage..................................................... 66
Storage compartments ............................. 38
Submerged watercraft .............................. 85
Switches ................................................... 50
T
Tachometer .............................................. 34
Throttle cable, checking and adjusting ..... 75
Throttle lever ...................................... 29, 48
Towing the watercraft ............................... 85
Transporting ............................................. 65
Trolling speed, checking .......................... 78
Troubleshooting ....................................... 80
Troubleshooting chart .............................. 80
Turning the watercraft .............................. 61
W
Water separator ....................................... 46
Watercraft characteristics ......................... 17
Water-skiing ............................................. 19
Y
Yamaha Engine Management System
(YEMS) ................................................. 32
Yamaha Security System and
low-RPM mode
(for VX Deluxe/VX Cruiser) ................... 32
Yamaha Security System
(for VX Deluxe/VX Cruiser) ................... 32
Yamaha Security System lock and
unlock modes
(for VX Deluxe/VX Cruiser) ................... 32
UF1K72E0.book Page 2 Wednesday, August 2, 2006 10:43 AM