1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 258Get this manual
JET PUMP
550 Series Mixed Flow Pump Only
Using the alien wrench, remove the lubrication fitting the capIf is available, and discard the around the capRemove the three bolts and washers securing the end the guide vane casting and remove the capRemove and discard the O-ring around the cap, if is availableRemove the White plastic plug the end capRemove and SAVE the pieces of shim the plastic plug and the bearing on the impeller shaftThe pieces of shim material found in this location "constant" thickness and not the impeller-to-pump case clearanceBe sure save the and keep the SEPARATE from the shim located behind the impeller
the impellerWith the wrench on the tool, loosen the impeller from the threads on the impeller shaft5- the impeller from the impell shaftIf the oil seal at the forward of the impeller needs to replaced, pry it out with screwdriver