Automatic Throttle Release System: Description

The automatic throttle release system is designed to prevent high exhaust emissions due to vehicle operation with choke knob pulled out. Excessively rich air/fuel mixture results with choke on, and this mixture will not burn completely in combustion chamber. Unburned fuel will then be passed into thermal reactor causing extremely high operating temperatures. The release system forcibly returns choke knob, disengaging choke and prevents extended rich mixture engine operation. System consists of a water temperature switch, No. 2 vacuum switch, No. 2 delay valve (if equipped), choke and full choke switches, a choke relay, and connecting wiring. See Figure.