Spark Plugs

Always use the recommended spark plugs for your Polaris watercraft and make sure the spark plug gap is within specification. Measure gap (1) with a wire thickness gauge.

SUse NGK PZFR6H spark plugs.

SProper electrode gap is .028+/- .002(.71 mm +/- .05 mm).

SSpark plug torque is 18 ft. lbs. (24 Nm).

1

CAUTION

Using non-recommended spark plugs can result in serious engine damage. Always use the spark plugs recommended for your Polaris watercraft.

MAINTENANCE AND LUBRICATION

Spark plug condition is indicative of engine operation. The spark plug firing end condition should be read after the engine has been warmed up and the vehicle has been driven at higher speeds. Immediately check the spark plug for correct color.

SA slightly brownish tip is considered normal. The engine is running properly.

SA yellow tip is caused by salt water mist ingestion. This conductive coating will eventually cause foul- ing. This is a normal situation.

NOTE: If the spark plug tip is black or grey, have the watercraft serviced by an authorized Polaris dealer as soon as possible.

SA black tip indicates several potential problems: the wrong spark plug (wrong heat range) is being used; excessive idling occurs; the carburetor idle speed mixture or high speed mixture is too rich or the RPM limiter is malfunctioning.

SA light grey or white tip indicates that the wrong spark plug (wrong heat range) is being used; the car- buretor idle speed mixture is too lean; a fuel filter is plugged or an engine seal or gasket is leaking.

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Polaris 2003 MSX owner manual Spark Plugs