I have a new in the box .61 GC with the rotary carb with the large disc idle screw.
I am looking for a starting point for the needle valves because the small(high speed?) needle was removed by prev owner.
I also would like someone to explain the big disc(idle?). Does it only rotate in place and not go in and out? There is a notch cut into it, what is that for? I turned it in and out several times with no movement in and out that I could see. This would mean the manual is hard to understand because the starting point is 2 1/2 turns out for the idle valve. This is why I am asking the question.
I am also wondering about the small needle valve or the high. The manual says 4 turns out but that would cause one of the O-rings to be exposed.
I seem to think I have the wrong manual for this carb and need to understand this carb.
Thanks
Charlie