I got a propane carb from Kohler and it is on the unit and working. The regulator has an idle adj. screw, it has a flow adjustment for full power. All I can say is the unit idles just like it did on gas and I went out and cut with mulch kit on and seemed more powerful. I will post some pictures later. I had to go to dealer to modify the gov shaft since it was directly in line wiht
the hose coming from the propane tank. I need a oil pressure sensor on the engine so I could put it in series with the propane switch. To shut the unit off you turn off the propane at the tank. Then if you forget to turn off the inition key the propane swithch stays actuated and will sap the battery.
Now during the winter I am going to put on a small pump to I can use the gas tanks for roundupf for spraying along long sidewalks and cracks and along fences etc.