Went by one of the local discount stores after breakfast and picked up another personal size folding table for the shooting deck. Now we have his and hers so she can wiggle and wobble all she wants without messing up my shots. When I got back I pulled the Rancher out of the atv garage and pulled the zturn in. The belt went on pretty east just by threading it around the pullies then finally pulling the tensioner pully to get the belt looped behind it. I tested it and it works just fine... no idea what kicked it off because all the bearings felt good. Maybe I didn't have it on just right after the motor swap.The belt looked to be in really good condition.
Guards are still on mine but I did hit a stick... not a big one, it chopped it up and spit it out. It is possible that is what happened but there was no evidence of that happening.
When you apply power to a mower parts of the belt are under tension and parts are slack. If your pulleys are worn a good bounce can be enough to derail the slack portion.
Thanks Jim. This ain’t my first rotator cuff surgery.The first week is the worst. I’ll be drifting in and out of consciousness today! Plans are to take It real easy. I might accompany my lovely wife on a short shopping trip but that’s it.