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Tractors and Farm Equipment

What controls the Choke on Briggs and stratton 4.5?


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October 29, 2008 2:57PM

There are several systems used by Briggs for choke control. Auto choke engines are equipped with a heat sensitive bi-metal coil attached to the exhaust. When cold, the coil closes the choke plate. When heated by exhaust gases, it opens the plate. Most other models have a manual lever to open and close the choke or a primer bulb system.