I am having a hell of a time getting a new belt on. I got the old belt off by simply pulling on the tensioner pulley with my hands while someone else slipped the belt off of the alternator pulley. However, I can't seem to get the new belt on the same way because the tensioner is too stiff. The tensioner looks to be a Torx socket but a size T50 is too small and the next size up, T55, is too big, not to mention the repair manual I bought seems to have a different motor than the one I am looking at. I.E. the tensioner in the manual is up top in front of the air cleaner while mine is down below the alternator. The manual says to use a 1/2 breaker bar which I have tried and it doesn't fit. If anyone has any ideas, help would be greatly appreciated. Thanks.

I am having the same problem. Did you ever solve the problem. Please advise.

My freinds s-10 uses a 10mm allen for the tentioner, Hope this helps.
Tibbar