mnj,
Thanks for the tip on the Murphy RP2307B.
I have been looking all over the place for a solenoid. (Electric car door lock actuators, linear actuators, etc...)
The Murphy unit looks like the ticket.
On the Changfa, I was going to leave the "Red" throttle knob loose and use the Murphy to actuate the throttle lever between off and run positions.
I would make a "stop" to limit the throttle lever at the desired speed of 1800 rpm.
I was not aware of the governor fork behind the fuel limiting adjuster.
Do you think there is an advantage to using the governor fork instead of the throttle lever?
cheers,
Veggie