12-21-2002, 07:16 PM
I have finally got the parts for the top end rebuild on my '78 ATC 90 and have started to reassemble. The piston rings that came with the piston look nothing like the rings that were installed on the piston that I removed. The manual does not cover this area very well. Does anyone know of a website, or can you advise on the proper set up for these piston rings? I'm a part timer and don't know much about these things, but I would love to learn. Thanx for your help