240 distributor

My thoughts are someone had the distributor out and reinstalled it off 90 degrees on the drive. It really doesn't matter what position the distributor is in, it will work fine as long as the firing order is correct and timing advance is set right.

You might have a culpert around like my dad caught one night. Dad always parked his 3 tractors right across drivway from house in haying time. One morning the 130 started but backfired and missed terrible. Of course first thing he took off was plug wires and cap. Being careful putting them back, he didn't realize tractor had been tampered with. Next morning, same thing, this time he looked, number 2 and 3 wire were crossed. Third morning, same thing. Ah, but the 4th night dad slept on a cot on the deck. About midnight he heard a comotion down by tractors. He tip toed down and caught the inovative young lad in the act of changing wires. I don't know what he did, but the howls coming out of that lad woke everyone in the house. I think he wacked him right across knuckles with a 1x2 hardwood stick. I'll bet he never disturbed tractor plug wires again.