I have searched but not found anything. A month ago I got a 2000 Rancher 350 4x4. Needed some work but overall in good shape. The main thing is someone previous put a crap chinese niche cylinder and piston in it. I do not know what happened to lead them to pull it apart. I have a OEM cylinder and all coming for it. I found some metal shavings in the oil filter. It had oil pressure as the supply and return lines to the oil cooler would get hot so I know oil was circulating but I saw on the Honda diagram there are 2 metal screen filters in the engine. One is under the oil fill cap which I can see by shining a light in and it looks clean. The other I cannot tell exactly where it is but it appears you have to actually split the cases to clean it. Even though it appears to have oil pressure I wanted to check that screen. Does anyone know how to get to it?

Here is a picture of the screens. The one of the left appears to be the one under the oil fill cap that I can see, the one on the right by how they have it positioned makes it seem you would need to split the cases to access, this however would seem absurd.

 

Yes you split the cases to clean them. The pickup channel for the oil pump is below the screen 6, so it stops big bits of aluminium etc, from getting to the oil pump. The paper element filter stops any that has got through, from getting to the bearings. You may be able to see the gauze once you get the cylinder and piston off, if you rotate the crank into a certain position.

Out of curiosity, what is wrong with the Chinese cylinder?

 

Thanks for the info, I will rotate crank and look to see if can maybe see the other one.
The chinese cylinder and piston, Niche brand. The piston is way to small, Had super bad piston slap, at higher RPM it sounded like it was about to come apart. You can wiggle the piston side to side in the bore its so loose, Only way I had to measure was with feeler gauges but I can fit a .013" gauge between the Skirt and the cylinder wall. I read if you use that Niche cylinder with a Namura piston they are fine. I got a OEM cylinder to go back with.