Hey Bob, thanks for the Jetting specs. I bought a JD jet kit, so I followed the instructions and got it running tonight. I replaced the battery with one of those new 123 lithium batteries and I drained it pretty quick trying to get it started before I jetted it (month ago). I need to buy a low amperage battery charger to get the new battery back up to snuff. I had to hit the start button and kick to get it fired up but it did run. Since it was in the living room, I decided to shut it off though
Seems to be a starter cranking speed issue due to a undercharged battery, unless the starter is junk but I thought I read that the new starters are good?
Anyway, that is one sweet 501, I really want one to tinker on someday!