spark plugs YAMAHA VX 2006 Owners Manual

2-4
E
1Air filter case
2Water separator
3Fuel tank
4Battery
5Flush hose connector
Use to flush the engine cooling water pas-
sages.
6Electrical box
Protects electrical components from water.
7Oil tank8Muffler
9Spark plugs/Spark plug caps/Ignition coils
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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 ..................................................... 4-9
Periodic maintenance chart ................. 4-10
Inspecting the fuel system ................... 4-11
Changing the engine oil ....................... 4-12
Checking the air filter element ............. 4-14
Inspecting the jet thrust nozzle
angle ..................................................... 4-14
Inspecting the shift cable
(for VX110 Deluxe) .............................. 4-14
Inspecting and adjusting the
throttle cable ......................................... 4-15
Cleaning and adjusting the
spark plugs ........................................... 4-16
Lubrication points ................................. 4-18
Inspecting the battery .......................... 4-20
Adjusting the fuel injection system ...... 4-22
Replacing the fuses ............................. 4-23
Specifications ........................................ 4-24
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Periodic maintenance chart
The following chart gives general guidelines for periodic maintenance. However, depend-
ing on your operating conditions maintenance may need to be performed more frequently.
PMC-F1B1(
) This mark indicates maintenance that you may do yourself.
(
❍) This mark indicates work to be done by a Yamaha dealer.
MAINTENANCE INTERVAL
INITIALTHEREAFTER
EVERYPA G E
10
hours50
hours100
hours100
hours200
hours
ITEM
6
months12
months12
months24
months
Spark plug Inspect, clean, adjust



4-16
Lubrication points Lubricate


4-18
Fuel system Inspect❍❍
4-11
Fuel tank Inspect, clean❍❍
4-11
Trolling speed Inspect❍❍
4-22
Throttle shaft Inspect❍❍
—
Cooling water passages Flush

*1 4-1
Water inlet strainer Inspect, clean❍❍
—
Bilge strainer Clean❍❍
—
Impeller Inspect❍❍
—
Jet thrust nozzle angle Inspect, adjust

/❍

/❍
4-14
Shift cable and mechanism
(VX110 Deluxe)Inspect, adjust
❍❍
4-14
Throttle cable Inspect, adjust❍❍❍
4-15
Stern drain plugs Inspect, replace❍❍
3-9
Battery Inspect ❍❍
4-20
Rubber coupling Inspect❍
—
Engine mount Inspect❍
—
Nuts and bolts Inspect❍❍❍
—
Air filter Inspect, replace❍❍
4-14
Engine oil Replace❍❍❍
4-12
Engine oil filter Replace❍❍
—
Valve clearance Inspect, adjust❍
—
*1: After every use
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Cleaning and adjusting the
spark plugs
The spark plug is an important engine
component and is easy to inspect. The con-
dition of the spark plug can indicate some-
thing about the condition of the engine. For
example, if one spark plug shows a distinctly
different color, the engine could be defec-
tive. Do not attempt to diagnose any prob-
lems yourself. Have a Yamaha dealer
service the watercraft.
Remove and inspect the spark plugs peri-
odically; heat and deposits will cause the
spark plugs to slowly break down and erode.
If electrode 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 2-5 for seat
removal and installation procedures.)
2. Remove the spark plug cap.
CAUTION:@ Do not use any tools to remove or install
the spark plug cap, otherwise the igni-
tion coil coupler may be damaged. The
spark plug cap may be difficult to remove
because 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.Specified spark plug: NGK CR9EB
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Submerged watercraft
If the watercraft is submerged or flooded
with water, follow the procedure below and
consult a Yamaha dealer as soon as possi-
ble. Failure to do so may result in serious
engine damage!
In an emergency:
1. Beach the watercraft and remove the
stern drain plugs to drain the water from
the engine compartment. (See page 3-9
for further instructions.) Remove the
storage compartment drain plugs to
drain the water from the storage com-
partments.
2. Install the stern drain plugs and storage
compartment drain plugs.
3. Disconnect the spark plug caps, and
then remove the spark plugs.
CAUTION:@ Do not connect the spark plugs to the
spark plug caps.
@
4. Disconnect the fuel injector couplers.
CAUTION:@ Cover the disconnected fuel injector cou-
plers so that they do not get wet. If the
couplers get wet, they could corrode,
which could lead to poor connections.
@
5. Crank the engine for 5 seconds at wide
open throttle. Repeat this step until all of
the water in the cylinders has been
expelled.
6. Spray a rust inhibitor into each spark
plug hole for 5 seconds.
7. Crank the engine for 5 seconds at wide
open throttle. Repeat this step several
times.
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5-9
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CAUTION:@ Do not start the engine even after com-
pleting the previous steps. Any water
remaining in the engine could cause seri-
ous engine damage.
@
8. Install the spark plugs, and then connect
the spark plug caps and fuel injector
couplers.
9. Have the watercraft inspected by a
Yamaha dealer as soon as possible.
CAUTION:@ Be sure to have a Yamaha dealer inspect
the watercraft. Otherwise, serious engine
damage could result.
@
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Index
A
Adjusting the fuel injection system ........ 4-22
Approval label of emission control
certificate ................................................. 1-4
B
Battery ............................................ 3-10, 4-5
Beaching the watercraft ........................ 3-32
Bilge ........................................................ 3-9
Boarding alone ...................................... 3-24
Boarding and starting in deep water ..... 3-24
Boarding with passengers ..................... 3-25
Builder’s plate.......................................... 1-3
C
Capsized watercraft .............................. 3-27
Changing the engine oil ........................ 4-12
Check engine warning indicator ............ 2-20
Checking the air filter element............... 4-14
Checking the trolling speed ................... 4-22
Cleaning and adjusting the spark
plugs...................................................... 4-16
Cleaning the jet intake and impeller ........ 5-3
Cleaning the watercraft ........................... 4-6
Connecting the jumper cables................. 5-6
Cooling water pilot outlet .............. 2-11, 3-14
Cruising limitations ................................ 1-13
D
Docking the watercraft .......................... 3-32
E
Emergency procedures ........................... 5-3
Emission control information
(For Canada only) ................................... 1-4
Engine break-in ..................................... 3-15
Engine compartment ............................... 3-6
Engine oil ................................................ 3-3
Engine oil level ........................................ 3-7
Engine overheat warning indicator ........ 2-22
Engine serial number .............................. 1-2
Engine shut-off cord (lanyard) ............... 3-13
Engine shut-off switch ............................. 2-9
Engine stop switch .................................. 2-9
Enjoy your watercraft responsibly ......... 1-21F
Filling the fuel tank .................................. 3-4
Fire extinguisher .................................... 3-11
Flushing the cooling system .................... 4-1
Front storage compartment ................... 2-24
Fuel and oil.............................................. 3-1
Fuel level ................................................. 3-6
Fuel meter ............................................. 2-19
Fuel system ............................................. 4-4
Fuel tank ............................................... 4-11
Fuel tank filler cap ................................... 2-6
Fuel warning indicator ........................... 2-21
G
Gasohol ................................................... 3-2
Gasoline .................................................. 3-1
Getting to know your watercraft ............ 3-20
Glove compartment ............................... 2-25
H
Handgrip ................................................ 2-14
Hazard information ................................ 1-17
Hood........................................................ 2-6
Hour meter/Voltmeter ............................ 2-20
Hull and deck .......................................... 3-6
Hull Identification Number (HIN).............. 1-2
I
Identification numbers ............................. 1-1
Important labels ....................................... 1-5
Inspecting and adjusting the throttle
cable...................................................... 4-15
Inspecting the battery ............................ 4-20
Inspecting the fuel system ..................... 4-11
Inspecting the jet thrust nozzle angle .... 4-14
Inspecting the shift cable
(for VX110 Deluxe) ................................ 4-14
J
Jet unit................................................... 3-13
Jumping the battery ................................. 5-5
L
Label location .......................................... 1-5
Launching the watercraft ....................... 3-16
Learning to operate your watercraft ...... 3-20
Leaving the watercraft ........................... 3-19
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