This is a stupid question I know. This is my first top end. I got the piston in and realized i never looked to see if the rings were label side up. The manual says if they are unmarked it doesn't matter and if they are marked, then label side up.
Does wiseco yz250 ring orientation matter?
I just dont feel like taking it back out and spending another 30 min trying to get that damn piston back in by hand when I get home from work today.
I just installed a Wiseco Pro Lite model piston in my son's KX100, the instructions stated that the rings may be installed either side up. But I still am in the habit of always installing them with the markings up.
Again this was on a KX100, so I do not know if the rings instruction sheet from Wiseco was generic or specific to the KX100. It appeared to be generic.