Electric Assist Choke: Operation
The choke thermostatic coil spring reacts to engine temperature at exhaust crossover in intake manifold. An electric heating element (located next to a bimetallic spring inside the choke well) assists engine heat.
This single-stage electric assist choke is designed to give a more rapid choke opening at temperatures above approximately 60°F, and slower choke opening below this temperature. A wire from the choke heater is connected to an electrical control switch. Above 60°F, the control switch will energize the choke heater.