Section 08 PROPULSION SYSTEM
Sub-Section 02 (JET PUMP)
08-02-3
TYPICAL
1. Inspect impeller and boot
Impeller/Wear Ring Clearance
This clearance is critical for jet pump perfor-
mance.
Clearance can be checked from water inlet open-
ing or from venturi side. However, the last meth-
od requires more work.
To check clearance from water inlet side, remove
inlet grate.
To check clearance from venturi side, remove
venturi/nozzle assembly as described in Oil In-
spection in this section.
Using a feeler gauge with 30 cm (12 in) blades,
measure clearance between impeller blade tip
and wear ring. Measure each blade at its center.
Clearance should not exceed 1.0 mm (.040 in). If
clearance is greater, disassemble jet pump and in-
spect impeller and wear ring. Renew worn parts.
TYPICAL — MEASURING FROM WATER INLET SIDE
1. Feeler gauge
TYPICAL — MEASURING FROM VENTURI SIDE
1. Feeler gauge
Oil Inspection
Detach ball joint of steering cable from nozzle.
SPX, XP, GSI and GSX Models
Detach ball joint of VTS link rod.
GTS, GTI and GTX Models
Detach ball joint of reverse cable and springs from
reverse gate (GTS model only).
All Models
Remove 4 screws retaining venturi to jet pump
housing.
F01J0DA
1
F01J0EA
1
F01J0FA
1
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