I'd be willing to bet your fuel selector valve is clogging up and needs to be replaced. Do you still have the grey tempo fuel lines? If you do you need to replace the fuel lines as they are known for deteriorating inside.
When you say you cleaned the fuel filter do you mean the one at the front of the ski or the little ones inside the carbs?
When the tempo fuel lines deteriorate they clog the little fuel filters inside the carbs. These will need to be cleaned out as well.
When you say you cleaned the fuel filter do you mean the one at the front of the ski or the little ones inside the carbs?
When the tempo fuel lines deteriorate they clog the little fuel filters inside the carbs. These will need to be cleaned out as well.