Thanks Rivets, you were right, it was threaded, just siezed on there, I had to weld a nut to the impeller to get an air wrench on it but it came off, CCW so you were double right. The rings I got for it are obviously not the right ones, I need someone who can tell me what hp a 60mm bore is. I'm guessing now it may be a 2hp. The cylinder looks great but since it was smoking I probably will have the cylinder measured for wear. I hate that the engine codes were only stamped on the blower housing back then, makes no sense to me, it's like putting the serial number of a gun on the handgrips.