spark plugs replace YAMAHA SUPERJET 2010 Owners Manual

Maintenance
58
EJU40830Periodic maintenance chart
The periodic maintenance chart gives general guidelines for periodic maintenance. Have a
Yamaha dealer perform the checks in the following chart. However, maintenance may need to
be performed more frequently depending on your operating conditions. If you have any ques-
tions, consult a Yamaha dealer.
This“” mark indicates maintenance that you may do yourself.
This“” mark indicates items to be checked and serviced by a Yamaha dealer.
Item OperationInitial Thereafter every
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hours50 hours100
hours200
hours
6
months12
months12
months24
months
Spark plugsCheck, clean, replace 59
Lubrication pointsLubricate 53
Intermediate hous-
ingLubricate 59
Fuel systemCheck—
Fuel filterCheck 59
Check, replace—
Fuel tankCheck, clean—
CarburetorCheck, adjust—
Engine idling
speedCheck, adjust 61
Carburetor throt-
tle shaftCheck—
Bilge strainerClean—
ImpellerCheck—
Jet thrust nozzle
angleCheck, adjust—
Handlebar pivot
shaftCheck, adjust—
Steering frictionCheck, adjust—
Throttle cableCheck, adjust—
Choke cableCheck, adjust 60
BatteryCheck, charge—
Rubber couplingCheck—
Engine mountCheck—
UF2F72E0.book Page 58 Friday, May 22, 2009 5:11 PM

Maintenance
59
EJU41180Lubrication points
Lubricate moving parts with water-resistant
grease. (See page 53 for information on the
main lubrication points.)
Intermediate housing
Fill the intermediate housing with water-resis-
tant grease through the grease nipple using a
grease gun.
EJU34225Checking the fuel filter
Check the fuel filter. The fuel filter should be
replaced if water or dirt is found in the filter.Have a Yamaha dealer replace the fuel filter if
necessary.
EJU34377Checking 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.
Remove and check the condition of the spark
plugs.
The condition of a spark plug can indicate
something about the condition of the engine.
For example, if the center electrode portion is
very white, this could indicate an intake air
leak or carburetion problem in that cylinder.
Do not attempt to diagnose any problems
yourself. Have a Yamaha dealer service the
watercraft.
Nuts and boltsCheck— Item OperationInitial Thereafter every
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hours50 hours100
hours200
hours
6
months12
months12
months24
months
Recommended water-resistant grease:
Yamaha Marine Grease/Yamaha
Grease A
Grease quantity:
Initial 10 hours or 1 month:
20.0–22.0 cm³ (0.68–0.74 US oz,
0.71–0.78 Imp.oz)
Every 100 hours or 12 months:
3.0–5.0 cm³ (0.10–0.17 US oz,
0.11–0.18 Imp.oz)
1Fuel filter
UF2F72E0.book Page 59 Friday, May 22, 2009 5:11 PM