My 159 will kick up ok on choke and run fine although it needs the odd blip to keep it going when the choke is off. However, after about a minute from starting it just dies as if there is no fuel getting through. It's fitted with a Bing Carb.

Any suggestions or tips gratefully received.

Float level, adjust so it fills by bending the brass bits up a bit.

Thanks Nigel, I changed the float assembly and spotted that the needle had slipped up inside the slide and the needle circlip was caught on the spring which was holding it high re-seated it and its working .

The breather tube which runs from side to side should HAVE a hole in it... so if you have replaced this tube cut a hole in it.....