spark plugs replace YAMAHA FX HO CRUISER 2009 Owners Manual

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
UF2H70E0.book Page 77 Thursday, January 15, 2009 10:49 AM

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
UF2H70E0.book Page 82 Thursday, January 15, 2009 10:49 AM