My dad felled in Alaska, living in a tent, clearing a cut for a pipeline for 3 years in the 70s, and I learned from him. I think by 12 I was bucking firewood with his supervision, so at 16 when I took a side job for a family friend and I asked to use his saw, he said no problem. It was an 034 super he had bought new, and kept in good shape. He had taught me all I knew about running the saw, but sometimes things that are obvious to professionals and long-time users are totally missed by the young and the un-initiated.
The job that I wanted the saw for was trimming an overgrown hedge. The hedge had been allowed to grow over 12 feet, and they wanted it cut back to about 5 feet. There were some main stems in there that were over 2 inches, but knowing what I know now, I don't think I would take a saw to anything where I couldn't see what the tip of the bar was doing. I had been trying to get this hedge trimmed with hand tools, but had enough, so with his permission I took the saw. He was out of state taking care of his mom, and he told me take the saw, but put a sharp chain on it (he always had 3 or 4 chains hanging in the garage ready to go). I put the chain on, and off I went.
Got to the job, started cutting the hedge. The saw didn't cut worth a damn. I had probably 80 feet of hedge to cut, and after running the saw for 2 hours I was about 6 feet in. Called up my dad, wondering if there was something wrong with the saw, he said it must be my technique, but to keep at it. I think it took me 3 days to cut that hedge with that saw. When my dad got back, we sat down and had a look at the saw. He laughed, and let me know that the saw will cut much better with cutters pointed forward
Boy did I feel dumb. I didn't even notice how much heat I was putting into the chain, the back of the cutters were black. But through perseverance, and not wanting to look like I didn't know what I was doing at 16, I wore that hedge away with the backside of the cutters. My dad had always swapped chains in the past, and it never even occurred to me when I was putting the chain on that it could go on two different ways.