This gummy substance is a result of of fuel being left inside of a carburetor for who knows how long. More often than not almost all Watercraft have some debris or deposits inside the carburetor.There is no magic chemical in a bottle or treatment that can remove severely gummed carburetor's.
15th February 15,
12th January 12,
We had a ski come in with bogging issue's. After inspecting the carb's we found the issue.The pop off spring was installed incorrectly. The carburetor also had bad gas and debris in both carburetors. Yamaha Superjet Carburetors