I just finished with a top end rebuild on a 951 carb version. The PTO piston had siezed. I believe I found and corrected a crankcase leak that had cased the siezure. I started the motor on the hose today and let it run for about 5 mins. I put my hands on the left and right side of the cylinder. The PTO side was warmer than the MAG. Not uncomfortably warm but noticable. Is this normal.

I have also rebuilt the carbs and changed fuel lines and cleaned the fuel system.

Thanks for any help