Sea-doo Challenger 5896, Shop Manual

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Section 06 FUEL SYSTEM
Sub-Section 03 (CARBURETORS)
06-03-3
Check fuel pump valves operation as follows :
Connect a clean plastic tubing to the inlet nipple
and alternately apply pressure and vacuum with
the mouth. The inlet valve should release with
pressure and hold under vacuum.
Repeat the same procedure at the outlet nipple.
This time the outlet valve should hold with pres-
sure and release under vacuum.
WARNING : Some fuel may be present in
fuel pump. Be careful not to swallow fuel
when under vacuum.
3, Diaphragm
Pump Diaphragm Leak Test
Using a suitable pump gauge tester, perform the
following test proceeding as follows :
– Install pump gauge tester (P / N 295 000 083)
on pulse nipple.
– Pump tester until it reaches 28 kPa (4 PSI).
TYPICAL
1. Pump gauge tester
2. Install on pulse nipple
Diaphragm must stand pressure for 10 seconds.
If pressure drops, replace diaphragm.
4, Pump Body
Inspect valves. The pumping area should be free
of holes, tears or imperfections. Replace as need-
ed.
5, Filter
To verify filter condition proceed as followsþ:
Remove pump cover, gasket, diaphragm and then
pump body and gasket.
Remove filter from carburetor body then clean fil-
ter and blow carefully with compressed air (low
pressure).
Replace filter if damaged.
TYPICAL
1. Filter
CARBURETOR ASSEMBLY
When assembling pump, ensure to properly posi-
tion components together. Refer to previous illus-
trations if necessary.
6,7, Choke Plate and Throttle Plate
When installing butterfly onto shaft, close butter-
fly so that it centers into carburetor bore. Firmly
tighten screws.
CAUTION : Always apply Loctite 242 (blue)
on screw threads prior to installing screws.
8, Needle Valve Lever
Inlet Control Lever
Rounded end of needle valve lever must be flush
with surrounding metering chamber floor and not
with body assembly. Place the end of a ruler over
lever to check adjustment.
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F01F0XA
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F01F0YA
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