Bombardier SeaDoo 1997 factory shop manual, Page 31Get this manual
Section 03 ENGINE Sub-Section 02 (LEAK TEST)
Rotary Valve Shaft
NOTE: It is preferable to drain the injection oil from the rotary valve shaft, but it is not mandatoryBlock oil return hose of the rotary valve shaft with hose pincherF01B32A
717 ENGINES 1Pump with reducer and nipple
F01B31A
717 ENGINES 1Oil return hose blocked with hose pincher