Some reading if the link works.
books.google.com.au/books
clean fuel tank out 1st then carb blow clean all jet passage's , idle jet should be 45, main jet around 180 depends what exh system for main jet , fuel bowl level should be 3/4 to 7/8 full bike in upright possie , mixture screw 3 full turns out , best too check timing as well with a timing light while your there
