Inspecting Metering Chamber And Inlet Needle Valve - Echo shindaiwa CSG-7410ES Service Manual

CSG-7410ES
EC741S
4-9 Inspecting metering chamber and inlet needle valve
A
FUEL SYSTEM
1. Remove 4 screws (A), metering diaphragm cov-
A
er (B), metering diaphragm (C) and gasket (D).
2. Inspect metering diaphragm (C) for hardening,
distortion or pin hole. Replace as required.
B
3. Inspect metering gasket (D) and replace if de-
C
fective.
D
E
4. Loosen screw (E) and remove metering lever (F),
metering lever pin (G), metering lever spring (H)
and inlet needle valve (J).
5. Clean fuel passages in carburetor body with
compressed air.
NOTE: Before cleaning metering side with com-
pressed air, turn "H" needle clockwise until lightly
seated and remove inlet needle valve. Otherwise,
main nozzle check valve and inlet needle valve
spring may be damaged by the compressed air.
C D
H
29
F
J
G