I just bought a used Xcell 60 which came with a new YS .61 ST engine (the
old style). I also have a U-shaped tuned pipe. I'm having problems getting
the motor to run properly.
I understand that the big needle is the hover needle and the small needle is
the high end needle. Is this correct? Also there's a big brass knob on the
bottom of the engine. What does it do and how do I adjust it?
I've set the hover needle and the small needle the best I could, but the
engine is still running kind of funny. When I bring the throttle to idle,
the engine takes a long time to settle down into a 4 stroke idle. It seems
as through the idle mixture is way too lean. I'm not sure if it's the
needles or the fact that I'm using a tuned pipe. Please help.