A spark plug seals the combustion chamber. It conducts a spark that is generated in the ignition coil into the combustion chamber and provides a gap for that spark to jump across. Finally, it conducts the heat it picks up in the combustion process to the cylinder head and into the cooling system. Since 1936, NGK has built itself to be the world's leading spark plug manufacturer. NGK's spark plugs have a triple-gasket sealing process which helps them to withstand the roughest ride. A solid copper core increases spark and heat transfer and the longer insulating nose prevents fouling. The double dipped zinc-chromate shells resists corrosion and rusting.
Over time jet ski spark plugs can deteriorate from producing the spark. When this happens, it changes the spark plug gap causing irregular spark and missing. You don't have to wait to change your plugs. When you do change them, however, wait for the engine to be cold. Do notchange them when the engine is hot or warm because it could cause you to cross thread it by putting a cold spark plug in an heated up expanded hole.
1996 Hurricane
1996 SL 700
1996 SL 900
1996 SLT 700
1996 SLTX
1997 Hurricane
1997 SL 1050
1997 SL 700
1997 SL 900
1997 SLT 700
1997 SLTX
1998 SLH
1998 SLTH
1998 SLTX
1998 SLXH
1999 SLH
1999 SLTH
1999 SLTX
1999 SLX
2000 SLH
2000 Virage
2000 Virage TX
2001 SLH
2001 Virage
2002 Freedom
2002 Virage
2003 Freedom
2003 Virage
2004 Freedom
2004 Virage
