Bombardier SeaDoo 1990 factory shop manual, Page 44Get this manual
Section 03 ENGlINE Sub-section 04 (FLYWIHEELMAGNETO)
30, Magneto Flywheel
With Puller Plate properly secured as for IPTOflywheel removal, rotate MAG flywheel so that Extension Handle end stops on work table for loosening
Fully screw Puller in Puller PlateTighten puller bolt and at the same time, tap on bolt head using hammer to release flywheel from its taper
31, Ring Gear
Using suitable socket, unscrew retaining nut COUNTERCLOCKWISE when facing it