Shifting A Columbia In A '40

[G.M.]

Originally Posted by Kube

Then you are using later controls. Authentic 40 controls do not operate like that.

I made my own shifting controls. I don't like the way
the original ones work. I use 12 volt Pollock fuel shift valve
that is made for trucks with dual fuel tanks. As I described
I shifts by pushing a button and pushing the clutch. The
12 valve works on 6 volts. Pollock calls this a 6 port shifting
valve. G.M.