Design Improvements for the Zenith 601 HDS: Primer


The cable-operated choke system was not appealing, so instead a standard primer was installed. The primer pump is located on the instrument panel on the left hand side between the ignition switches and the fuel transfer pump switches.

The primer injects the fuel into the two ports of the pressure equalizing tube that connects the two intake manifolds. Without fail, two squirts result in an instant start of the engine.