How can you increase idle to 1500 or 2000, but it may not hang in rpm, so it need to come back to idle after you reved.
Greetz, Benjamin
I dont think that the idling governor would allow a 1500 rpm, it only works till 1000 rpm IIRC
The idling spring would have to be changed to a slightly stiffer one.
The stock idling spring would be completely compressed at 2000rpm, or on later pumps with a seperate idle lever, would have insufficient tension to reach 2000rpm.