So I went to change my tensioner and idler pulleys tonight, all went well EXCEPT my 3.5" smooth idler. I don't seem to have a 15mm bolt on this one... it's more like some kind of a star pattern in the middle?
Is anybody familiar with this? Documentation I see seems to list 15mm bolts for all the pulleys.
I don't have a whole bunch of tools, so if anybody has any ideas what this might be I would be appreciative.