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.
Sea-Doo:
1989 SP
1990 GT
1990 SP
1991 GT
1991 SP
1991 XP
1992 GTS
1992 GTX
1992 SP
1992 XP
1993 Explorer
1993 GTS
1993 GTX
1993 SP
1993 SPI
1993 SPX
1993 XP
1994 GTS
1994 SP
1994 SPI
1995 GTS
1995 SP
1995 SPI
1996 GTS
1996 SP
1996 SPI
Kawasaki:
1987 JS440
1987 JS550
1987 X2
1988 650 SX
1988 JS440
1988 JS550
1988 X2
1989 650 SX
1989 Jet Mate
1989 JS440
1989 JS550
1989 TS
1989 X2
1990 550 SX
1990 650 SX
1990 Jet Mate
1990 JS440
1990 TS
1990 X2
1991 550 SX
1991 650 SX
1991 Jet Mate
1991 JS440
1991 SC
1991 TS
1991 X2
1992 550 SX
1992 650 SX
1992 Jet Mate
1992 JS440
1992 SC
1992 TS
1992 X2
1993 550 SX
1993 650 SX
1993 SC
1993 TS
1993 X2
1994 550 SX
1994 750 SS
1994 SC
1994 TS
1994 X2
1995 550 SX
1995 SC
1995 TS
1995 X2
1996 TS
1986 & Previous JS440
1986 & Previous JS550
1986 & Previous X2
