Thanks Guys
The bike will run with or without the choke. The bike was running ok a couple of weeks ago. I parked the bike up and fitted new chain , sprockets and wheel bearings. After that I started it up and it ran for about 15 mins and died, sounded like it had run out of fuel. I filled it up with the correct mix, and hey presto, bike would only run for a short time before dying with what sounds like fuel starvation.
So cleaned the carb, cleaned the tank and filters ( x8), and put new fuel in, same problem. Checked the plug for sparking(ok), swapped out the coil/cdi, checked power from the stator, same problem.
So at the moment, I can run the bike for seconds rather than minutes, although have to keep working the throttle, and the it dies. It doesn't die just because the throttle is wide open, it can do it at idling speed.
Any ideas, ( cant get the nut off the shaft to check the woodruff key, but it appears to be tight)
regards
Dave