Bombardier SeaDoo 1999 factory shop manual, Page 358Get this manual
Section 09 PROPULSION SYSTEM Subsection 04 (REVERSE SYSTEM)
ADJUSTMENT
Put shift lever in forward positionPull shift lever approximately 50 mm (2 in) and push it back slowly in forward positionThe pawl lock no7 should be engaged in the anchor no22If not, adjust reverse cableLoosen bolts no18 at reverse cable support no16Turn adjustment nut no23 as required