I disconnected my fuel pump a square Briggs and Stratton 692026 now I don't know which line goes where on the pump. I think the middle one goes to the carbonator. Does the top one go to the tank or is it the vacuum? Thanks

Hi,
Suggest you replace with either 799056 or 808656 fuel pumps. Two nipples point in the same direction: outer one is vacuum and other is inlet. Third is outlet going to carb.
Peace,
Clarke