Bombardier SeaDoo 1997 factory shop manual, Page 206Get this manual
Section 08 PROPULSION SYSTEM Sub-Section 02 (JET PUMP)
F01J0DA
TYPICAL 1Inspect impeller and boot
F01J0EA
ImpellerWear Ring Clearance
This clearance is critical for jet pump performanceClearance can be checked from water inlet opening or from venturi sideHowever, the last method requires more workTo check clearance from water inlet side, remove inlet grateTo check clearance from venturi side, remove venturinozzle assembly as described in Oil Inspection in this sectionUsing feeler gauge with 30 cm (12 in) blades, measure clearance between impeller blade tip and wear ringMeasure each blade at its centerClearance should not exceed 1.0 mm (.040 in)If clearance is greater, disassemble jet pump and inspect impeller and wear ringRenew worn parts