Yes there is both an oil screen and centrifuge , yes you'll need to remove the right side cover .

Fist , take the time to look up " Basic Clutch Test " and perform it , then read all the various clutch repair posts , print out and save the pertinent ones .

Once you do this and the clutch passes the basic test (important to test it before taking it apart !) , you 'll only need to do periodic oil changes , the screen &   centrifuge only need service occasionally .