CS-350WES
30
FUEL SYSTEM
4-8 Testing carburetor
NOTE: To perform this test, inside carburetor should
be wet. If it is not, there is a chance to be a little
leakage.
1. Connect pressure tester 897803-30133 (B) to
carburetor fitting (A), and connect inlet fuel pipe (E)
of primer to carburetor fitting.
2. Apply pressure to 98 kPa (1 kgf/cm
2
) (14 psi
).
3. If pressure remains steady, follow step 4 to 5. If
pressure drops, proceed to step 6.
4. Lightly push primer once. Pressure tester reading
should drop and remain above 49 kPa (0.5 kgf/cm
2
)
(7 psi).
5. If the reading does not drop, check if primer is
defective or inlet needle valve is sticking.
6. Submerge carburetor in suitable clean solvent to
locate the leak by applying pressure.
7. If air bubbles come out between pump cover and
carburetor body, check pump diaphragm, pump
gasket, and diaphragm seat of carburetor body.
8. If air bubbles come out from throttle bore, check
inlet valve, metering lever spring, and metering lever
height.
4. Disconnect inlet pipe (E) of primer and throttle
rod (F) from carburetor.
F
E
E
B
A
4-7 Removing carburetor (continued)
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