Section 13 PROPULSION
Subsection 01 (JET PUMP)
Proceed as follows:
– Remove impeller cover no. 21. Install pressure
cap (P/N 529 035 843) on pump housing.
– Connect pump gauge tester (P/N 529 021 800)
to fitting.
– Pressurize pump to a maximum of 70 kPa
(10 PSI).
529 035 843
F18J19A
– Pump must maintain this pressure for at least 5
minutes.
CAUTION: Repair any leak, failure to correct a
leak will lead to premature wear of pump com-
ponents.
NOTE: If there is a pressure drop spray soapy wa-
ter around cover. If there are no bubbles, impeller
shaft, impeller shaft seal, or jet pump housing is
leaking through porosity and has to be replaced.
Jet pump unit has to be disassembled. There may
be 2 or 3 bubbles coming out from sleeve no. 14
seal area. This small leak is acceptable. Leaks
from other areas must be repaired.
– Disconnect pump gauge tester and remove
pressure cap.
– Reinstall impeller cover no. 21 with 3 new
self-locking screws. Push cover against pump
housing while tightening screws.
INSTALLATION
Jet Pump Housing
The water flow is controlled by a reducer located
between the jet pump support and the jet pump
on the inlet side. The reducer is color coded ac-
cording to watercraft model. See table below.
MODEL REDUCER COLOR
GTX 4-TEC and RXP
Yellow
GTX 4-TEC Supercharged
Red
Make sure that the reducer is installed as shown.
CAUTION: Misinstallation can cause overheat-
ing and damage to exhaust system.
1
F18J0IA
1. Color-coded reducer
Generously apply synthetic grease on drive shaft
splines.
Install jet pump. If necessary, wiggle jet pump to
engage drive shaft splines in impeller.
CAUTION: Some watercraft require a shim
between hull and pump; if shim has been re-
moved at pump removal, be sure to reinstall
it, otherwise engine alignment will be altered.
Apply Loctite 243 (blue) on stud threads or screws
(depending on the model) of jet pump housing.
RXP Models
Ensure to reinstall bushings no. 41 in fastener
holes of jet pump housing.
All Models
Install nuts/screws. Tighten as per the following
sequence.
650 smr2004-Complete Line Up
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