Carburetor - HITACHI 2-Bbl: Description: Notes
Carburetor is a 2-barrel downdraft design with primary and secondary throttle system. A choke valve and idle circuit are used in primary system only. Both primary and secondary venturies have main fuel nozzles.
A mechanical accelerator pump and a vacuum operated power valve are used for increased fuel requirements. An anti-dieseling switch or solenoid valve is used to stop fuel flow in idle circuit (on some models) when ignition switch is turned off. An electric automatic choke is used.
Some models use an altitude compensator device to maintain optimum air/fuel ratio at higher altitudes. Some carburetor models may also include dashpots, throttle positioners, vacuum break diaphragms, bowl vent solenoid valves, and other specialized devices.
CARBURETOR IDENTIFICATION
| Application | Man. Trans. | Auto. Trans. | |
|---|---|---|---|
| 1600 | DCP306-23 | n/a | |
| 1800 | |||
| Fed. 4WD | DCP306-26 | DCP306-27 | |
| All Others | DCP306-24 | DCP306-25 | |
NOTE:
For all on-vehicle adjustments not covered in this article, see appropriate TUNE-UP article.