Brettski, do a google on "automotive blend door actuator". These are small 12 volt electric servo motors that open and close the blend door on auto ventilation systems. On my Chrysler it is under the dash and not hard to get at. It is a rotary actuator so you would have to connect a bellcrank or lever arm to it so that it could drive your choke lever back and forth. It must have an automatic shuttoff when it gets to full stroke either direction because when activated they move one direction and shut off. Probably is set up so reversing polariy runs it one way or the other. You may be able to take the plastic part that the motor drives out of the dash and modify it to hook up to your choke lever thus not having to make a mechanism. Should be able to find these buy the dozens in the junk yard.
