I think this is the only year H-D would have used this? Maybe '59 - and I saw an original '60Ch had one, but probably added later. I'd have to read for sure, since KRs and XRs didn't have manual starters. This part originally had a straight rib sleeve (which was weather checked). I use a length of rubber hose instead. It appears H-D just disassembled a bicycle-style pedal, and only used the shaft, washer and nut. ?