2004-2006 Kawasaki 900 STX Jet Ski Service Manual, Page 14Get this manual
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GENERAL INFORMATION 1-7 General Specifications
NGK BR9ES 0.7 0.8 mm (0.028 0.031 in Solid 15 BTDC 250 rmin (rpm) 25 BTDC 000 rmin (rpm) 250 100 rmin (rpm)in water 800 100 rmin (rpm)out of