Bombardier SeaDoo 1990 factory shop manual, Page 134Get this manual
Section 08 PROPULSIONDRIVE SYSTEMS Sub-section 01 (PROPULSIONDRIVE SYSTEMS)
REMOVAL AND OVERHAUL
NOTEWhenever removing part, visually check for damage such as corrosion, crack, split, break, porosity, cavitation, deformation, distortion, heating discoloration, wear pattern, missing plating, missing or broken needle needle bearing, water damage diagon nosed by black-colored spots, etc Renew any damaged part As quick check, manually feel clearance and end play, where applicable, to detect excessive wear