Thanks for the advice!
I managed to get it to run for about 10secs using Tailspin's method -I realised I'd left the fuel shutoff valve closed.. grr. Couldn't repeat that though and gave up when my arm got tired.
I've ordered a starter to give that a go. I'm guessing its probably a carb setting so hopefully with the starter I'll be bale to adjust it slowly till its working. I have an NGK spark plug too so I'll swap that one it.