YS 120 NC Idle & Regulator Screw Exist?
Hi Dave- I've a new YS 120 NC that's run perfectly for first 15-20 flights. Now some low end adjustment is necessary since its getting run-in. Idle is too rich & I need to lean. Does this engine have a low speed idle screw? Where is it? Or do I adjust the pump regulator screw to adjust idle. If so, then won't this affect my high end adjustment?
As a side note- my roundish muffler with this engine was constructed of 2 halves welded together with a low temp metal filler (I think)... anyway, after 20 flights the metal filler has melted & my muffler is coming apart. Is this why I don't see any of these around any more? It worked great before it melted!
Thanks for your help!