2009 YAMAHA FX HO CRUISER engine

Maintenance and care
75
water passages by alternately squeezing
and releasing the throttle lever for 10 to
15 seconds.
(8) Stop the engine.
(9) Remove the garden hose adapter and in-
stall the flushing hose connector cap.
(10) Install the seat storage compartment and
the rear seat.
EJU36911Lubrication
(1) Lubricate all cables such as the throttle
and steering cables.
Use a suitable marine grease applicator
to pressure-lubricate the cables and
purge out any moisture between the inner
and outer cables.
(2) Lubricate the areas of the watercraft
specified in “Lubrication points” on page
84.
EJU33681Battery
If the watercraft will not be used for more than
a month, remove the battery from the water-
craft and store it in a cool, dry place.
(1) Disconnect the negative (–) battery lead
first, then the positive (+) battery lead and
breather hose, and then remove the bat-
tery from the watercraft.
(2) Clean the battery casing using fresh wa-
ter.
(3) If the battery terminals are dirty or corrod-
ed, clean them with a wire brush.
(4) Fully charge the battery.
(5) Apply Yamaha Marine Grease or
Yamaha Grease A to the battery termi-
nals, and then store the battery in a cool,
dry place.
(6) Check the battery at least once every 2
months and fully charge it if necessary.
NOTICE: Always keep the battery
charged. Storing a discharged batterycan cause permanent battery damage.
[ECJ00101]
To check the condition of the battery, check
the specific gravity of the electrolyte or mea-
sure the voltage at both battery terminals.
Charge the battery if the voltage is less than
12 volts.
It is recommended to have a Yamaha dealer
check the specific gravity and charge the bat-
tery. If you maintain the battery yourself, be
sure to read and follow the instructions provid-
ed with the battery tester and charger you
use.
EJU33731Cleaning the watercraft
Clean the watercraft before storing it for a long
period.
(1) Wash down the hull, handlebars, and jet
unit with fresh water.
(2) Rinse the engine and engine compart-
ment with fresh water. Drain all of the wa-
ter and wipe up any remaining moisture
with clean, dry rags. NOTICE: Do not
use high-pressure water when rinsing
the engine and engine compartment
as severe engine damage could result.
[ECJ00111]
(3) Spray the engine’s exterior with a rust in-
hibitor and lubricant.
(4) Wax the hull with a non-abrasive wax.
(5) Wipe all vinyl and rubber components,
such as the seat and engine compart-
ment seals, with a vinyl protectant. Specific gravity (for reference):
1.28 at 20 °C (68 °F)
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Maintenance and care
76
EJU33762
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
EWJ00311
Be sure to turn off the engine when you
perform maintenance unless otherwise
specified. If you are not familiar with ma-
chine servicing, this work should be done
by a Yamaha dealer or other qualified me-
chanic.
EJU33811Owner’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.
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
wrench may also be necessary to tighten nuts
and bolts.
1Storage compartment
1Tool bag
2Screwdriver
316 mm box wrench
410/12 mm box wrench
5Pliers
6Open-end wrench
7Garden hose adapter
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Maintenance and care
77
EJU37060Periodic maintenance chart
The following chart gives general guidelines for periodic maintenance. However, maintenance
may need to be performed more frequently depending on your operating conditions.
This“” mark indicates maintenance that you may do yourself.
This“” mark indicates work to be done by a Yamaha dealer.
Item OperationInitial Thereafter every
Page 10
hours50
hours100
hours100
hours200
hours
6
months12
months12
months24
months
Spark plugsCheck, clean, adjust 82
Lubrication pointsLubricate 84
Internal engine
componentsLubricate*2
50 hours or 12 months—
QSTS cablesLubricate—
Intermediate hous-
ingLubricate 84
Fuel systemCheck 79
Fuel tankCheck, clean 79
Trolling speedCheck, adjust 87
Throttle shaftCheck—
Cooling water pas-
sagesFlush
*174
Water inlet strain-
erCheck, clean—
Bilge strainerClean—
Electric bilge
pump strainerCheck, clean—
ImpellerCheck—
Jet thrust nozzle
angleCheck, adjust 79
Steering masterCheck—
QSTS mechanismCheck, adjust—
Shift cable and re-
verse gateCheck, adjust 80
Throttle cableCheck, adjust 80
Stern drain plugsCheck, replace 54
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Maintenance and care
78
*1 This operation should be performed after every use.
*2 This operation should be performed before long-term storage.
BatteryCheck, charge 86
Rubber couplingCheck—
Engine mountCheck—
Nuts and boltsCheck—
Air filter elementCheck 79
Engine oilReplace
50 hours or 12 months79
Oil filterReplace 79
Valve clearanceCheck, adjust— Item OperationInitial Thereafter every
Page 10
hours50
hours100
hours100
hours200
hours
6
months12
months12
months24
months
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Maintenance and care
79
EJU34212Checking the fuel system
WARNING
EWJ00381
Leaking fuel can result in fire or explosion.

Check for fuel leakage regularly.

If any fuel leakage is found, the fuel sys-
tem must be repaired by a qualified me-
chanic. Improper repairs can make the
watercraft unsafe to operate.
Check the fuel system for leaks, cracks, and
malfunctions. If any problem is found, consult
a Yamaha dealer.
Check:

Fuel tank filler cap and seal for damage

Fuel in fuel tank for water and dirt

Fuel tank for damage, cracks, and leakage

Fuel hoses and joints for damage, cracks,
and leakage

Air bleeding passages for leakageEJU34230Fuel tank
Check the fuel tank for leakage and for water
in the tank. If water is found in the fuel system,
or if the fuel tank needs to be cleaned, have a
Yamaha dealer service the watercraft.
EJU36951Engine oil and oil filter
WARNING
EWJ00340
Engine oil is extremely hot immediately af-
ter the engine is turned off. Coming in con-
tact with or getting any engine oil on your
clothes could result in burns.
NOTICE
ECJ00991
Do not run the engine with too much or not
enough oil in the engine, otherwise the en-
gine could be damaged.
It is recommended to have a Yamaha dealer
change the engine oil. However, if you choose
to change the oil on your own, consult a
Yamaha dealer.
EJU34311Air filter element
Have a Yamaha dealer check the air filter ele-
ment at the intervals specified in the periodic
maintenance chart.
EJU34321Checking 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.1Fuel tank
1
Recommended engine oil:
SAE 10W-30, 10W-40, 20W-40, 20W-
50
Oil grade:
API SE,SF,SG,SH,SJ,SL
Oil quantity:
With oil filter replacement:
3.1 L (3.28 US qt, 2.73 Imp.qt)
Without oil filter replacement:
3.0 L (3.17 US qt, 2.64 Imp.qt)
Total amount:
4.3 L (4.55 US qt, 3.78 Imp.qt)
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Maintenance and care
82
(5) Install the front and rear handlebar cov-
ers as shown in the illustration, and then
install the ten screws.
EJU37610Cleaning and adjusting the spark
plugs
WARNING
EWJ00350
Be careful not to damage the insulator
when removing or installing a spark plug.
A damaged insulator could allow sparks to
escape, which could result in a fire or ex-
plosion.
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 spark
plugs 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 seats. (See page 25 for seat
removal and installation procedures.)
(2) Open the plastic tie that is securing the
breather hose.
TIP:
Be careful not to drop the plastic tie into the
engine compartment.
Specified spark plug:
LFR6A
1Breather hose
2Plastic tie
2 1
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Maintenance and care
83
(3) Remove the engine cover screws, and
then remove the engine cover.
(4) Remove the spark plug cap bolts, and
then remove the spark plug cap.
NOTICE: Do not use any tools to re-
move 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.
[ECJ00211]
(5) 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-
1Engine cover
2Engine cover screw
1Spark plug cap bolt
2Spark plug cap
21
2
1
1Spark plug gap
Spark plug gap:
0.8–0.9 mm (0.031–0.035 in)
Spark plug tightening torque:
24.5 Nm (2.50 kgf-m, 18.1 ft-lb)
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Maintenance and care
84
stall the spark plug cap bolts and tighten
them to the specified torque.
(5) Lift up the breather hose so that it will not
be routed under the engine cover, and
then install the cover and engine cover
screws.
(6) Slide the corrugated tube on the breather
hose toward the bow until it stops, andthen secure the breather hose to the en-
gine cover by closing the plastic tie.
(7) Install the seats in their original positions.
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
outer cable, and then adjust the throttle ca- Spark plug cap bolt tightening torque:
7.6 Nm (0.77 kgf-m, 5.6 ft-lb)
1Engine cover
2Breather hose
1
2
1Corrugated tube
1Plastic tie
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
1
1
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