Yes it's 2 cycle
Original 2 cycle 4hp. Commercial grade . The carb has been cleaned. It runs but only at super high rpm. I can't adjust the set screw or anything. Many hours spent trying to repair. I hate to scrap the mower, it's in great condition but that carb is not available. I was looking into a straight engine swap. I saw one with a Honda on it on here but I'm new to the site and can't find it again.