My friends and I had a minibike with a 3 hp motor Very slow. A family down the street had moved away. They left behind an air compressor with a 5 hp motor. We cases it for 3 weeks. The rusty old thing just sat their. The house sign changed from for sale to sold about 4 weeks later. It was just sitting there about w steps from the end of the driveway. It didn’t start We cleaned the carb and got it running. We changed the oil. The pulley was the wrong size, it was rusty, we had to knock it off with a hammer and it cracked. Seems a neighbor knew we fixed the motor and called the guy. He came and demanded the return of the motor. When he saw the pulley was different, he asked where his was. Broken. This was 1975. I was 11. Today, that pulley is about $5. Back then, made in USA, probably $2. He called the cops. We are talking about a $2 item, let alone we fixed the motor. Taken away in hand cuffs. Parents had to pick us up. He agreed to drop the charges if we each paid $10.