Good luck with that one! Spent almost three weeks this summer fighting that this summer.
Yes there is a screened pickup in the tank on the end of the fuel hose. I wound up putting all new fuel lines on mine. FROM THE TANK ALL THE WAY INCLUDING A NEW INLINE FILTER.
I decided the fuel lines mmay have collapsed internally?
That did not fix it. I thought it was an ignition problem so pulled the engine and replaced the ignition trigger and electronic box.
Then I found that the fuel control valve spool had turned inside the valve and it only passed fuel on the reserve side.
Running it on reserve has solved my problem. I SHOULD BUY A NEW VALVE.
Another thing to check is those little holes around the throat of the carburetor will get plugged and it will surge.
If you take a fine wire and clean them it will correct the surge.
ANOTHER THING TO CHECK IS CORRECT SETTING OF THE THROTTLE CABLE.
Edited by JD DANNELS, August 21, 2014 - 09:10 PM.