Maintenance and care
63
EJU33761
Maintenance and adjustments
Periodic inspection, adjustment, and lubrica-
tion will keep your watercraft in the safest and
most efficient condition possible. Safety is an
obligation of the watercraft owner. Proper
maintenance must be carried out to keep the
exhaust emission and sound levels within the
regulated limits. The most important points of
watercraft inspection, adjustment, and lubri-
cation are explained on the following pages.
See a Yamaha dealer for genuine Yamaha re-
placement parts and optional accessories de-
signed for your watercraft.
Remember, failures that are the result of the
installation of parts or accessories which are
not qualitatively equivalent to genuine
Yamaha parts are not covered by the limited
warranty.
Maintenance, replacement, or repair of the
emission control devices and system may
be performed by any marine SI engine re-
pair establishment or individual. Warranty
repair, however, must be performed at an
authorized Yamaha marine dealership.
WARNING
EWJ00310
Be sure to shut the engine off when you
perform maintenance unless otherwise
specified, otherwise an accident or inju-
ry could result from unexpected opera-
tion, moving parts, or electric shock. If
the owner is not familiar with watercraft
servicing, this work should be done by a
Yamaha dealer. Improperly serviced
components could fail or stop operating
correctly, which could result in an acci-
dent.
Modifications to this watercraft not ap-
proved by Yamaha may cause loss of
performance or excessive noise and ex-
haust emissions, or render it unsafe foruse. Consult a Yamaha dealer before at-
tempting any modifications.
EJU33810Owner’s/operator’s manual and tool
kit
It is advisable to always carry the owner’s/op-
erator’s manual and tool kit with you whenev-
er you use the watercraft. For your
convenience, a storage compartment is pro-
vided on the watercraft for the manual and
tool kit.
NOTE:
To protect these materials from water dam-
age, it would be a good idea to put them in a
waterproof bag.
The service information included in this man-
ual is intended to provide you, the owner, with
the necessary information for completing your
own preventive maintenance and minor re-
pairs. The tools provided in the tool kit are suf-
ficient for this purpose, except that a torque
1Storage compartment
UF1G74E0.book Page 63 Monday, July 31, 2006 10:10 AM
Maintenance and care
68
and other deposits are excessive, replace the
spark plug with the specified plug.
Measure the spark plug gap with a wire thick-
ness gauge. Replace the spark plugs or ad-
just the gap to specification if necessary.
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.
(4) Install the spark plug cap.
NOTE:
Wipe off any water on the spark plug or in-
side the spark plug cap before installing the
cap. Push the spark plug cap down until it is
securely installed.
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 turnpast finger tight using the spark plug
wrench included in the tool kit. Have the
spark plug adjusted to the correct torque
with a torque wrench as soon as possible.
EJU34410Lubrication points
To keep moving parts sliding or rotating
smoothly, coat them with water-resistant
grease.
Throttle cable (handlebar end)
Squeeze the throttle lever and remove the
seal. Spray a rust inhibitor into the outer ca-
ble. Refit the seal securely.
Steering cable (handlebar end)
Steering cable (jet thrust nozzle end)
Jet thrust nozzle pivot shaft Specified spark plug:
BR8ES-11
1Spark plug gap
Spark plug gap:
1.0–1.1 mm (0.039–0.043 in)
Spark plug tightening torque:
25.0 Nm (18.4 ft-lb) (2.55 kgf-m)
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
1Seal
UF1G74E0.book Page 68 Monday, July 31, 2006 10:10 AM
Maintenance and care
71
EJU34490Fuel injection system
The fuel injection system was set at the
Yamaha factory. If the fuel injection system
needs 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.
EJU34520Bleeding the oil pump
If the oil tank becomes completely empty, or
any hose connected to the oil pump has been
disconnected, the oil pump must be bled to
ensure proper oil flow.
If necessary, have a Yamaha dealer bleed the
oil pump.
EJU36190Adjusting the Yamaha Adjustable
Sponsons (YAS)
The Yamaha Adjustable Sponsons can be
adjusted to two positions to enhance water-
craft performance according to operator pref-
erence and operating conditions. (See page
33 for an explanation of the positions.)To adjust the YAS:
(1) Remove the bolts on both sponsons.
(2) Remove the sponsons, and then install
them in the desired position.
NOTE:
Be sure to install both sponsons in the same
position.
(3) Tighten the sponson bolts to the specified
torque. Trolling speed:
1350 ±100 r/min
1Bolt
Sponson bolt tightening torque:
18.0 Nm (13.3 ft-lb) (1.84 kgf-m)
UF1G74E0.book Page 71 Monday, July 31, 2006 10:10 AM
