Trying to help a friend get an old fl250 running. Can any one tell me what the stock jets are supposed to be, and any baseline carb settings? Thanks in advance

here are some links for downloadable manuals :)

http://g2buggy.g2-innovations.com/gentech/manuals.htm

With a stock 250 if you follow the jetting recommendations in the manual you will be ok but you still need to verify your jetting.

What kind of problems are you having?

You need compression.
You need air/fuel at the right mixture to be drawn into the Engine.
You need spark at the right time to light off the air/fuel after its been compressed.
Then you have a running Engine.