RE: YS 110 troubles also
I purchased a slightly used 1.10 a couple of weeks ago and just got around to starting for the first time last night. It fired right up and idled fine. However, when I tried to advance the throttle it would act as though it was leaning out, and then pop to a halt. I had the high end needle out 3 turns. I tried several different setting on the high end needle and couldn't get it to rev. I went through the steps and set the regulator flush, the low end at 1 1/2 turns out and tried from 5 turns out all the way to 1 1/2 turns out on the high end and still could not get it to transition. Then I notice all of the bubbles in the line between the regulator and the carb. These were no small bubbles. At times it looked like it was all air. I pulled the regulator off and the diaphragm looks perfect. The gasket looked good as well. The fuel line from the tank was clear of bubbles so I am not sure quite where the bubbles are coming from. I have read through every thread that had mentioned bubbles in this line but still don't understand how this is supposed to work properly with bubbles entering the carb. I don't have time now to send it in for repair as I have a race in a little over a week. Any ideas you can give me will be greatly appreciated.
Thanks, Terry