My buddy has a go cart with a tecumseh 5.0 hp ohv engine and the fuel wont get past the bowl. he rebuilt the carb and I think the bottom bolt holding the bowl cap on is whats causing the problem. The bolt has 2 holes at the end of it and has to be lined up to a fuel passage inside the bowl and we cant figure out how to align it because you can see inside once the cap is on. he`s willing to sell me the motor for a hundred bux if we get it lit. Heres the codes if this helps. OHH50, YTPXS1721AA I`m sure many people have this same engine here.