I just found this part on ebay. The third picture shows a 'floppy' clutch key so maybe the key is not my problem (or the one on ebay has the same issue...)...
We 'lost' the highest gear (5th) a while back and then we lost all the gears, ie, it wouldn't move and I could push it backwards or forwards in any gear without resistance. I took the Spicer 4450-1 transaxle apart and although the grease was pretty dried and old there were no signs of wear and...