Drive Belt Replacement: '74 ST/16

Hi everyone,

I know that there has been other instances of this question asked before, but I was hoping someone could help again on it. I have my (late) grandpa's 1974 ST/16 tractor that I use to mow their yard to this day. It runs great but recently the drive belt slipped off. I look it over and decided that it was very worn and needed to be replaced. Is the Gates B100 belt the appropriate replacement?

Also, can someone help me out as to how I remove the old belt and replace it with the new one? I have looked it over several times but am still not quite sure. I just don't want to remove any more parts than I have too.

Jonas_71ss@yahoo.com or reply here. Thank you very much in advance. Once I begin restoring this tractor, I look forward to sharing pictures with you all.