Thought I should give an update to finish off this thread:
Willythekid is an absolute legend - he has picked the old mud bug up for me and after checking the float bowl, cleaning the spark plug and checking fuel & spark he tells me four or five kicks had her running again
I'll head up from Cromwell in a couple of months time to pick her up and bring it back and I think keep it for when my boys are a bit older rather than try and sell it again

.
Anyway, just want to say another big thanks to Willy and to everyone else for their advice and putting Willy in touch with me initially. Its bloody amazing the good people you meet off these forums and I hope I can return the favour / help someone else from here one day.
Cheers
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