1999-2004 Suzuki King Quad LT-300 300F ATV Factory Service Manual, Page 21Get this manual
PERIODIC MAINTENANCE
SPARK PLUG
Inspect every 000 km (1 200 miles, months)Replace every 000 km (4 000 miles) Remove the spark plug
CD using the special tools
,.fOOt09930-10121: Spark plug wrench set
09914-24510: T-handle
NGK DENSO
Standard DR7EA X22ESRU