1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 125Get this manual
IGNITION
7-5 IGNITION TIMING ADJUSTMENTS
All Kawasaki personal watercraft covered in this manual are equipped with an automatic advance type GDI systemIgnition timing is accomplished electronically and signal output increases proportionately to engine speed increase thereby advancing the timingSuch system has no moving or sliding partsTherefore, periodic adjustments are not necessaryThe timing is set correctly at the factory and should never need adjustment UNLESS the magneto assembly is misaligned or an ignition componentsuch as the magneto assembly -has been replacedTo adjust the timing on the Model 550 and the Model 650 Series engines, the fuel tank must first be removedThe oil injection system need not be disturbed on the Model 650 Series to adjust the timing-