Maintenance and care

If the throttle lever does not move smoothly or if the throttle lever free play is not within the specified range, have a Yamaha dealer service the watercraft.

EJU37041

Cleaning and adjusting the spark plugs

EWJ00350

WARNING

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 component 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 attempt 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 electrode erosion becomes excessive, or if carbon and other deposits are excessive, replace the spark plug with the specified plug.

Specified spark plug:

LFR6A

To remove a spark plug:

(1)Remove the seats. (See page 28 for seat removal and installation procedures.)

(2)Remove the engine cover screws, and then remove the engine cover.

2

1

1Engine cover screw

2Engine cover

(3)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]

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