Hi Dave.
I’ve got my YS63 FZ back from YS service with problem not responding to low needle valve and running lean that makes stop running in air.
When I’ve started firs time that was running fine on ground and die again in air, I’ve keep trying adjust that and fly, but result the same.
And at the end of day the engine became very hard starting ( I’ve need turn that a lot time ) when that starts that runs on idle for a couple of minutes and stops, in case of I put some throttle the engine stops right away.
So I am going send the engine again because I could not able to adjust the engine, this is first time I’ve had so many problems with YS engine and my friend has couple of them with no problem.
So Please fix the problem, I wish to get good working engine back.
Thank you,
Dmitriy.

Please let me know, we want to make sure this engine is repaired correctly.

That was repaired in YS service center after discussion with You on previous thread.

Please contact the service dept. directly, I am not in service. The phone number is:

775-782-4562 or 775-782-6070