Ok ther is no wat and y. We got the thing like this. I diked with it a little bit the pedal guts. And at one point if i was runing it and turned it off wait bout a minute. Start it bak up and hit forward it wud go forward but wen i hit rev it wud not go forward again with out *** it off an waiting a minute again. Ser no A10D2241F. Models25a

Kind of a vague question...kind of llike saying i threw up,why am i sick??...a little more info would help,lets start with COMPLETE make,model and serial number.....and a little more specific on the what and why????