1992-1998 Kawasaki PWC Jet Ski Service Repair Manual., Page 252Get this manual
JET PUMP givenIn specific steps of the procedures whenever possible special eff has been made to give some type of equivalent or homemade tool which may substitutedHowever, the cost of special tool may be offset by money saved if expensive part is not damagedSPECIAL TOOLS FOR JET PUMP SERVICE
550 Series Mixed Flow Pump Oil Seal and Bearing
Mixed Flow Pump 550 Series If the clearance is less then the maxi-
mum value, no adjustment requireds If the clearance is than the maximum value, and the pump is in good condition, the impeller clearance must adjustedShim material must be added between the pump case and the impellerThe addition of 0.04" (Imm) of shim material will decrease the impeller clearance by 0.005" (0.144mrn)Mixed flow pump efficiency decreases by as much as 30 when the blade to pump case clearance increases by only 0.04"mm5If the clearance is greater than the maximum value, but the pump case has scratches deeper than 0.04" (lmrn5, pump caseThe jet pump must be removed from the to add shim material behind the impellerProcedures for pump removal presented in the next section 10-4The impeller-to-pump case clearance is NOT used determine the total amount or the additional amount of shim material used behind the impellerThe thickness of shim material used depends entirely on the height of the end cap shoulder and the depth which the bearings Inside the guide vane castingA sample calculation and bearing shim material provided in the assernblIng procedures correctly space the impeller on the pump for the specified mpeller-to-pump clearance1 JET POMP SERVICE