Bombardier SeaDoo 1992 factory shop manual, Page 132Get this manual
Sactiam 07 ELECTRICAL Sub-section 02 (IGNITION TIMING)
IGNiTIQN TIMING
ELECTRONIC IGNITION SYSTEM
This section IS mainly divided in two parts, the first one using top dead center gauge to verify PTO flywheei timing mark pasitionThe second one usmg stroboscopic tming light to check ignition timingFlywheel timing mark position verification is required,toTroubleshoot missing or broken magneto flywheel woodruff key2Troubleshot magneto flywheel corresponding to different engme type3Scribe the timing1 mark on new service IPTO flywheel, Always verify PTO flywheel timing mark position before checking igntion timing