1991+ Kawasaki 650 SC Factory Service Manual, Page 169Get this manual
ELECTRICAL SYSTEM 13-21
Spark Plug Cleaning
.Clean the electrodes and the ceramic insulator around the center eilectrode with an abrasive bl.asting deviceo Be certain that aill abrasive particles are removed from the plug Clean the entire plug in high flash point solvent
Spark Plug Adjustment
Measure the spark plug gap