8C-2 Disassembly Procedure; 8C-3 Inspection Procedure - Robin EH09D Service Manual

8c-2 DISASSEMBLY PROCEDURE

Prior do disassembling the carburetor, make sure
to wash it with clean gasoline, washing oil or the
like.
(1) Loosen the pump cover screw !4 !4 !4 !4 !4 and remove
the screw and the pump cover !3 !3 !3 !3 !3 .
(2) Remove the pump gasket !2 !2 !2 !2 !2 and the diaphragm
!1 !1 !1 !1 !1 .
(3) Next, place the carburetor with the metering
side up and remove the metering cover screws
i i i i i (4 screws).
(4) Remove the metering cover u u u u u , the diaphragm
ass'y y y y y y and the gasket t t t t t .
(5) Loosen the metering lever pin screw !7
remove the lever r r r r r , pin !8 !8 !8 !8 !8 , spring e e e e e , needle
valve w w w w w , etc.
(6) Remove the high-speed needle o o o o o and the
idle needle !0 !0 !0 !0 !0 .

8c-3 INSPECTION PROCEDURE

(1) Wash the carburetor body with gasoline or the
like and blow it with compressed air.
However, make sure not to blow compressed
air into the check valve unit of the carburetor
equipped with primer pump.
(2) Check the gaskets for any deformation and/or
damage. If a gasket is deformed or damaged,
make sure to replace it with a new one.
(3) Make sure that the pump diaphragm !1 !1 !1 !1 !1 is not
damaged and make sure that the inlet valve
and outlet valve are flat and not bent.
(4) Make sure that the metering diaphragm y y y y y is not damaged and that the plate is not bent.
(5) Check the throttle shaft !9 !9 !9 !9 !9 and the choke shaft @0 @0 @0 @0 @0 for smooth operation.
(6) Check the inlet screen q q q q q for sticking of foreign matter. If there is any particle of foreign matter stuck
on the inlet screen, wash it and blow it out with compressed air.
(7) Check the inlet needle valve w w w w w for abnormal wearing. If the inlet needle valve is worn, change it with
a new one.
14
13
12
11
1
!7 !7 and !7 !7
19
16
2
18
17
8
- 59 -
15
10
9
3
4
5
6
7
Fig. 8-8
20