Chainsaw Repair

My experience with Chinese rings is that they are very hard and may take a year or so for one of us with a lot of saws to get broken in completely.

You can see the status of the ring in the exhaust port. My observation is that you would see just a very small portion of the top edge of the ring with vertical marks instead of horizontal marks on a engine after just a few times use?  Whereas a plain cast iron ring would show vertical marks "broken in" from top to bottom at this point.

Also the Chinese tend to pride themselves with "as cast" cylinder walls where the Nikasil is sprayed onto the bore without any prior honing and then the cylinder is stuck over a flap wheel for a few seconds before being declared "finished". You'll see the bounce marks where the flaps went across the ports.

I bought a new Zenoah G62 cylinder some 4 or 5 years ago that said Husqvarna all over it. Most beautiful bore you ever seen with honing before and after chroming.