BOMBARDIER SEA-DOO GS 5626 1998, Shop Manual

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Section 06 FUEL SYSTEM
Subsection 04 (CARBURETOR)
06-04-3
CLEANING
The carburetor exterior surfaces should be cleaned
with a general solvent and dried with compressed
air before disassembly.
Carburetor body and jets should be cleaned with
a carburetor cleaner. Follow manufacturer’s in-
structions.
Inspect O-rings, diaphragms and gaskets.
DISASSEMBLY AND INSPECTION
Inspect parts for corrosion damage (shaft, throttle
plate, spring, screw, check valve housing, etc.).
1, Needle Valve
Inspect needle valve tip for a grooved condition. If
worn, needle and seat must be replaced as a
matched set.
2, Low Speed Screw
Check tip for a grooved condition. Replace if nec-
essary.
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 295 000 114) 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
Check fuel pump valve 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.
TYPICAL
1. Fuel outlet nipple
2. Pulse nipple
3. Inlet nipple
-
CAUTION
Be careful at carburetor cleaning not to remove
paint. Paint removal will cause carburetor to
rust very rapidly. Repaint if necessary.
◆
WARNING
Solvent with a low flash point such as gaso-
line, naphtha, benzol, etc., should not be used
as they are flammable and explosive.
-
CAUTION
Heavy duty carburetor cleaner may be harm-
ful to the rubber parts, O-rings, etc. Therefore,
it is recommended to remove these parts pri-
or to cleaning.
◆
WARNING
Some fuel may be present in fuel pump. Be
careful not to swallow fuel when under vac-
uum.
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