Air Cleaner - Thermostatic: Description
All models are equipped with a Thermostatic Air Cleaner. Air cleaner is equipped with an air control valve (inside snorkel) which allows either heated exhaust shroud air or cooler ambient air into carburetor, depending upon valve position. Valve position is controlled by a vacuum motor/bi-metallic temperature sensor system.
The bi-metallic sensor is located inside air cleaner housing and is equipped with an air bleed valve. The vacuum motor is located at hinge point of control valve. Tubing connects intake manifold vacuum to sensor and sensor to vacuum motor.