When i start my mower let it warm up and then take off it won't go forward or reverse i use to get under the back and mess with a little lever that i believe is connected to the free wheel lever and it will take off and work fine , now when it does it i just rock back and forth in the seat and i can feel it start to let go and it will take off and work fine . My question , is there something i can fix to stop this problem before it hurts my trans.. Thanks bowwind