I have a ucando 3d 60 size powered by an OS91FX and cannot get it to run properly. I have seen the suggestions previously but am posting this as a new post in an effort to get more suggestions.

In order to start the engine I have to turn it over on its back and once I have it running I can turn it right side up. Even then it still runs terrible and I can't seem to tune it so it will run properly. The engine ran gread on a 4* 60 and on the bench.

Please give me some suggestions on how to get it to run properly without buying pumps, regulators, etc. I also am trying to avoid rotating the the engine to horizontal.

Would greatly appreciate any help anyone can give me.

Thanks in advance,

doubledee