Bombardier SeaDoo 1989 factory shop manual, Page 121Get this manual
Section 08 PROPULSIOiNDRIVE SYSTEMS Sub-section 01 (PROPULSIONDRIVE SYSTEMS)
Needle bearing contact surface 1
Replace blunted round or damaged Splines condition
Seal contact surface
Fool 009 040
Deflection Excessive deflection could damage splines of drive shaft, impeller, flywheel or floating seal carrier
Check impeller for cavitation damage, deep scratches or any other damageCheck for cavitalion, scratches or other damage