The shift lever if memory serves me correctly is under the powerhead....so bad news is the powerhead has to come off to get at the parts, and I doubt that it is avalible from the manufactor. When OMC went under in 02 and Bombardier took over many of the old parts have just gone away so you may have to look on ebay of a salvage yard fot the mid section of the same motor for the parts. It is cast so having it welded is tough , I had had welders tell me that cast is very hard to weld because it is so porious