Section 06 ST EE RING AND PROPULSION
Subsection 03 (JET PUMP)
GENERAL
JETPUMPMAINCOMPONENTS
219100893-030-003_a
1. Venturi
2. Jet pump housing
3. Wear ri ng
4. Impeller
INSPECTION
IMPELLER CONDITION
Condition of impeller, impeller boot and wear
ring can be quickly checked from underneath the
watercraft. With the vehicle on the trailer, use
a flashlight to visually inspect them through the
inlet grate.
smr2007-028-001_a
TYPICAL — UNDERNEATH HULL
1. Impel
ler
2. Impeller boot
3. Wear ri ng
IMPELLER/WEAR RING
CLEARANCE
This clearance is critical for jet pump performance.
To che
ck clearance, remove jet pump.
Using a feeler gauge, measure clearance between
impeller blade tip and wear ring. Measure each
blade at its center.
smr2006-02
7-008
MODEL
MAXIMUM WEA
R
CLEARANCE
All models 0.35 mm (.0
14 in)
IMPELLER SHAFT RADIAL PLAY
Radial pla
y is critical for jet pump life span.
To check radial play, remove jet pump.
Make sure impeller shaft turns freely a nd
smoothly.
1. Retain ho
usinginasoftjawvisemakingsure
not to dam
age housing lug.
2. Set a dial gauge and position its tip onto metal
end, close to the end of the impeller hub.
3. Move shaft end up and down. Difference be-
tween highest and lowest dial gauge reading is
radial play.
smr2016-037-015_a
TYPICAL — MEASURING IMPELLER SHAFT RADIAL PLAY
1. Dial gauge
2. Measure close to impeller hub end
RADIAL PLAY
0.5 mm (.02 in)
219100963-019 185
To Next Page
Loading...
