Combines 4420 auto header height

[TwinRotor]

I pull the lower switch and short the pins on the connector it raises but doesnt lower. I switched the connectors on top of the solenoid and it still doesnt lower. Its the single on_off switch.

 

[mech1]

these units if i remember dont lower they stay at one position and that is it

 

[TwinRotor]

It depends on how the sensors in the head are set. If the head raise and ground drops out from under the header it will lower like going over a bump.