Parts such as the Cam Chain: Gasket,tensioner Adjuster (nas), Chain,camshaft Drive, Gasket 8.2x14x1 (nas), Plug,adjuster are included in the Dr250se 1991 (m) Usa (e03) Cam Chain parts fiche.
Check out any of the thirteen Cam Chain components enlisted.
The Gasket 8.2x14x1 (nas) is the lowest priced item on this Cam Chain schematic.