I had to remove and disassemble the carbs because of the heavy varnish formation. It sat 3yr.s with gas in the tank and carbs. I do not know the condition of Yours but Mine took alot of elbow grease and a carb cleaner called Cyclo it seemed to work the best for Me. Do not get it on any rubber or gasket material, Setup was not easy for Me, Perhaps there are other post on site to help with Your type of carbs.