I was watching a post the other day a guy warned specifically against revving a cold saw. He showed a scored piston, (which looked like the result of an air leak to me. He the went into all this detail about ovals fitting into circles before everything heats up.....blah blah blah. I don’t treat my saw any different than I do any of my other power equipment. I choke start it, let it run maybe 3-5 seconds to clear the carb then get after it. My mentality is that if manufacturers didn’t want you piss revving a cold engine they wouldn’t have a saw start at high idle. Some of you dudes go out with a temp gauge and all that, or burn up half a tank of gas before cutting, I’ve seen the videos. Is all that really necessary?