
E
4
EJU10860 
MAINTENANCE AND 
CARE 
Storage ...................................................... 4-1
Flushing the cooling system  .................. 4-1
Lubrication .............................................. 4-3
Fuel system ............................................ 4-4
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
Changing the engine oil  ....................... 4-11
Checking the air filter element  ............. 4-13
Inspecting the jet thrust nozzle 
angle ..................................................... 4-13
Inspecting the shift cable 
(for VX110 Deluxe)  .............................. 4-13
Inspecting and adjusting the 
throttle cable ......................................... 4-14
Cleaning and adjusting the 
spark plugs  ........................................... 4-15
Lubrication points  ................................. 4-17
Inspecting the battery  .......................... 4-19
Adjusting the fuel injection system  ...... 4-21
Replacing the fuses  ............................. 4-22
Specifications ........................................ 4-23
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4-22
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EJU21321 
Replacing the fuses 
The fuses are in the electrical box 1.
To replace a fuse: 
1. Remove the cap 2. 
2. Replace the fuse 4 with the spare
fuse5 of the correct amperage by using
the special tool 3 on the reverse side of
the cap.
WARNING@ Do not use fuses of higher amperage
than those recommended. Substitution
with a fuse that has an improper rating
can cause extensive electrical system
damage and possible fire. 
@ 
Fuse amperage: 
30 A (battery) 
10 A (main relay) 
10 A (electronic throttle valve) 
3 A (security system) 
20 A (main)
UF1K70.book  Page 22  Friday, November 19, 2004  2:42 PM 

5-1
E
EJU11160 
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. 
EJU13670 
Troubleshooting chart 
TBC-F0P7ETROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not 
startStarter motor does not turn over
Yamaha 
Security 
System 
(VX110 
Deluxe)Lock mode selected Select unlock mode
2-15
Engine shut-
off switchClip not in place Install clip
2-9
Fuse Burned out Replace the fuse and 
check wiring4-22
Battery Run down Recharge 4-19
Poor terminal connec-
tionsTighten as required
4-19
Terminal corroded Clean 4-5
Starter motor Faulty Have serviced by 
Yamaha dealer—
Starter motor turns over
Throttle lever Squeezed Release 2-10
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 dealer4-10
Spark plug Fouled or defective Clean or replace 4-15
Spark plug cap Not connected or loose Connect properly 4-15
Connected to wrong 
cylinderConnect properly
4-15
Fuel injection 
systemFuel pump faulty Have serviced by 
Yamaha dealer—
UF1K70.book  Page 1  Friday, November 19, 2004  2:42 PM 

6-2
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Limitations on who may operate the 
watercraft .............................................. 1-11
“L-MODE” indicator light 
(for VX110 Deluxe)................................ 2-23
Location of main components ................. 2-1
Lubrication............................................... 4-3
Lubrication points .................................. 4-17
M
Maintenance and adjustments ................ 4-7
Manufactured date label.......................... 1-3
Multifunction meter ....................... 2-18, 3-14
O
Oil pressure warning indicator............... 2-21
Operating your watercraft...................... 3-20
Operation .............................................. 3-15
Operation of controls and other 
functions .................................................. 2-5
Operation requirements ........................ 1-13
Other labels ............................................. 1-9
Owner’s/Operator’s Manual and 
tool kit ...................................................... 4-8
P
Periodic maintenance chart..................... 4-9
Post-operation checks........................... 3-34
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 .................... 1-15
Remote control transmitter 
(for VX110 Deluxe).................................. 2-7
Replacing the fuses............................... 4-22
Reverse on waterways 
(for VX110 Deluxe)................................ 3-33
Riding watercraft with passengers ........ 3-21
Rough water operation .......................... 3-33
S
Safe boating rules ................................. 1-20
Safety information ................................. 1-11
Seat ......................................................... 2-5
“SECURITY” indicator light 
(for VX110 Deluxe)................................ 2-23Selecting the normal mode/low-RPM 
mode (for VX110 Deluxe) ...................... 2-17
Shift lever and reverse gate 
(for VX110 Deluxe) ................................ 3-12
Shift lever (for VX110 Deluxe) ............... 2-13
Specifications ........................................ 4-23
Speedometer......................................... 2-19
Starting and boarding in shallow 
water ..................................................... 3-23
Starting from a dock .............................. 3-23
Starting the engine ................................ 3-17
Starting the watercraft ........................... 3-22
Start switch............................................ 2-10
Steering system ...........................2-12, 3-12
Stern drain plug ....................................... 3-9
Stopping the engine .............................. 3-19
Stopping the watercraft ......................... 3-31
Storage.................................................... 4-1
Storage compartments .......................... 2-24
Submerged watercraft ............................. 5-8
Switches ................................................ 3-14
T
Tachometer ........................................... 2-19
Throttle .................................................. 3-11
Throttle lever ......................................... 2-10
Towing the watercraft .............................. 5-7
Transporting .......................................... 3-36
Troubleshooting ...................................... 5-1
Troubleshooting chart ............................. 5-1
Turning the watercraft ........................... 3-29
W
Warning labels ........................................ 1-5
Watercraft characteristics ...................... 1-16
Water separator ...................................... 3-8
Water-skiing .......................................... 1-18
Y
Yamaha Engine Management 
System (YEMS) ..................................... 2-15
Yamaha Security System 
(for VX110 Deluxe) ................................ 2-15
Yamaha Security System lock and 
unlock modes (for VX110 Deluxe) ........ 2-16
Yamaha Security System/Low-RPM 
mode (for VX110 Deluxe) ...................... 2-15
UF1K70.book  Page 2  Friday, November 19, 2004  2:42 PM