The most reasonably priced component used on the Cr250r Elsinore 1988 (j) European Direct Sales Carburetor Optional Parts Kit (2) is the Screw-washer,4x16.
A sample from the products for the Carburetor Optional Parts Kit (2) include: Jet,main,#188, Slow Jet #55, Jet,main (#170), Jet,main,#192.
This CARBURETOR OPTIONAL PARTS KIT (2) assembly utilises ten Screw-washer,4x16(s) - the highest specified component.