2003 Ski-Doo ZX Series Factory Shop Manual, Page 142Get this manual
Section 04 ENGINE Subsection 04 (LEAK TEST AND ENGINE DIMENSION MEASUREMENT)
Check the following: 1All jointed surfaces and screwstud threads of engine: spark plug base, insulator cylinder head RAVE valve bellows, piston and housing cylinder crankcase halves (joint) oil injection pump mounting flange (O-ring) coolant pump housing bleed screwsplugs2Small injection oil lines coming from pump
Pump Shaft Oil Gear Reservoir
Install air pump on adapter and pressurize as above
A32C1HA
If pressure drops, it indicates defective crankshaft inner sealA32C1GA