Maintenance and care
87
TIP:
If removing the spark plug cap nearest the
stern, remove the plastic tie that is securing
the wiring harness before removing the cap.
(4) 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.
To install a spark plug:
(1) Clean the gasket surface.
(2) Wipe any dirt from the threads of the
spark plug.(3) Install the spark plug, and then tighten it
to the specified torque.
TIP:
If a torque wrench is not available when you
are installing a spark plug, a good estimate of
the correct torque is 1/4 turn to 1/2 turn past
finger tight using the spark plug wrench in-
cluded in the tool kit. Have the spark plug ad-
justed to the correct torque with a torque
wrench as soon as possible.
(4) Wipe off any water on the spark plug or
inside the spark plug cap, and then install
the cap. Push the spark plug cap down
until it is securely installed, and then in-
stall the spark plug cap bolts and tighten
them to the specified torque.
If the spark plug cap nearest the stern
was removed, secure the wiring harness
by installing the plastic tie after installing
the cap.
(5) Install the engine cover and engine cover
screws, and then install the seats.
EJU36970Lubrication points
To keep moving parts sliding or rotating
smoothly, coat them with water-resistant
grease.
Throttle cable (handlebar end)
Loosen the adjuster and disconnect the
outer cable from the bracket. Spray a rust
inhibitor into the outer cable. Connect the
1Spark plug cap bolt
2Spark plug cap
3Plastic tie
1Spark plug gap
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
1
2
3
Spark plug tightening torque:
24.5 Nm (2.50 kgf-m, 18.1 ft-lb)
Spark plug cap bolt tightening torque:
7.6 Nm (0.77 kgf-m, 5.6 ft-lb)
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
UF1W71E0.book Page 87 Tuesday, June 24, 2008 11:46 AM
Trouble recovery
92
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.
EJU36982Troubleshooting chart
TROUBLE POSSIBLE CAUSE REMEDY PAGE
Engine does not
start (Starter motor
does not turn over)Yamaha Se-
curity SystemLock mode selected Select unlock mode
35
Engine shut-
off switchClip not in place Install clip
27
Fuse Burned out Replace fuse and
check wiring96
Battery Run down Recharge 89
Poor terminal con-
nectionsTighten as required
89
Terminal corroded Clean 79
Starter motor Faulty Have serviced by
Yamaha dealer—
Engine does not
start (Starter motor
turns over)Throttle lever Squeezed Release 28
Fuel Empty Refill as soon as pos-
sible52
Stale or contaminat-
edHave serviced by
Yamaha dealer83
Fuel tank Water or dirt present Have serviced by
Yamaha dealer83
Spark plug Fouled or defective Clean or replace 86
Spark plug
capNot connected or
looseConnect properly
86
Connected to wrong
cylinderConnect properly
86
Fuel injec-
tion systemFuel pump faulty Have serviced by
Yamaha dealer—
UF1W71E0.book Page 92 Tuesday, June 24, 2008 11:46 AM
