Grumpy you got it right. It was the choke. The hand throttle mechanism was bodged up and not pulling the choke the last few mm. Even if you manually pulled it the last bit it would creep forward. I replaced the hand throttle so it now has plenty of friction and more travel and it starts first pull on full choke.
New belts, cutting blade, oil, throttle, bit of grease here and there, aircleaner, spark plug, fresh fuel and a big degrease and it's ready to hand back to the demolition boys.
Last edited by aldot; 03/03/11 08:12 AM.