Disassembly

Fig. 3 DCH-340, DCH-340-227, DCR-384, DFP-340-3 & DFP384 carburetor exploded view.:

1. Remove accelerator pump lever spring, then the throttle return spring, Fig. 3.
2. Disconnect accelerator pump lever.
3. Remove vent valve switch.
4. Disconnect choke connecting rod from counter lever.
5. Disconnect choke vacuum hose, then remove choke chamber-to-float chamber attaching screws and remove choke chamber from float chamber.
6. Remove diaphragm assembly link-to-secondary throttle lever circlip and disconnect link, then remove diaphragm assembly attaching bolts and the diaphragm.
7. Remove throttle chamber-to-float chamber attaching screws, then the throttle chamber.
8. Remove accelerator pump diaphragm and spring, then the float needle valve assembly.
9. Remove fuel level gauge cover attaching screws, then the cover, gauge, gasket and float. Use caution not to lose float collar.

Fig. 2 Diaphragm assembly:

10. Remove diaphragm assembly attaching screws, then separate diaphragm cover, spring and diaphragm. Use caution not to lose ball and spring, Fig. 2.
11. Remove jets from upper part of float chamber.
12. Remove accelerator pump discharge setscrew, then the weight, check ball and spring (if equipped).
13. Remove power enrichment valve (if equipped).
14. Remove main jet plugs, then the primary and secondary main jets.
15. Remove primary slow air bleed from choke chamber. The primary throttle valve, secondary throttle valve and choke valve are sealed at the factory to prevent air leaks. Do not remove these parts.