I posted on this problem some time back. I have a 1977 Mercury Model 200 20Hp motor that will drop into gear if the engine is reaved up while in neutral. I had a great response to why this was doing this and a solution that worked for a limited time as was stated - that was that the detents on the manual shift were worn and that I could bend down the piece that sat into the detents to put more presure on them so it would not drop into gear as easily. Bending this part down fixed the problem for about 5 years, but the detents have worn further and it is tiem for me to replace that part. The question that I have is what are the names of parts I will need and how hard is it to replace this? The serail number on my motor is 4409643if this will help any. Thanks in advance to anyone that is willing to help me.<br /> belowt@mail.ecu.edu