2004-2005 Kawasaki STX-15F Jet Ski Factory Service Manual., Page 17Get this manual
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GENERAL INFORMATION 1-11 General pecifications
22.5 BTDC 67.5 ABDC 270 74.5 BBDC 9.5 ATDC 264
NGK R9EK (0ATDC 300 rmin 32 BTDC 000 rmin (rpm) 300 100 rmin (rpm) -in water 300 100 rm