Reply To: Mercury KE4 Piston Ring

[goldmember]

Thanks guys. I will get a set of those ring compressors. I have a few questions though

What does this mean…

“The anti -rotting pins in piston ring grooves should NOT be mashed
down..,,if the pins mashed down the rings will not align to install pistons in cylinder”

And

The important thing in all this is the rings have to be fitted to the cylinder and the
ends of rings have to be located and kept in place by the anti rotation pins.

I thought that the open ends should be 120 degrees apart but I am not aware of “anti-rotation pins”.