The most reasonably priced component used on the Cl400 1998 (w) Japan Nc38-100 E-7 is the Bolt,washer,6x25.
Some items from this specific schematic: Washer,18x32x2, Nut,18m/m, Gear,primary Driv, Nut,lock,18mm.
This E-7 diagram displays the required parts for the Cl400 1998 (w) Japan Nc38-100 E-7.