Get the bike idling as stable as you can. Spray some carb cleaner or engine starter on / around the carb boots while it's idling. If the bike revs, you have a leak at the carb boots.
Edit: That line from carb to petcock does not have a clamp on it, it's friction fit.
Last edited by clofan; 10-08-2015 at 11:48 AM.
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