Originally Posted by Jono Garton
Its not a diy job, will take a good motorbike, lawnmower mechanic 15 mins, or your average joe blogs allot of stress and time
First time I've looked at a carb (car, bike or boat) and the cleaning of the jet and solving the problem on this engine took 10 mins with a bit of fusewire. Runs perfectly now.
So thanks for the advice and I can now tick off another job done. I do appreciate the complexity of a multi-carb engine and the balancing issues from owning a Yam motorbike but as with most jobs they can be done by non professionals (and often better) providing you have a good manual (the Seloc one I have is pants!), correct tools and a bit of time.