Parts such as the Fuel Tank: Bolt Flang 6x12, Screen Set,fuel, Label *nh-0*, Mark, L.fuel Tank are included in the Xr250 1980 (a) Usa Fuel Tank parts fiche.
This schematic depicts all components used in the Xr250 1980 (a) Usa Fuel Tank partslist.
The most reasonably priced component used on the Xr250 1980 (a) Usa Fuel Tank is the Clip,tube 5.0mm.
