In this schematic the "Nut,flange 7mm" is used most often.
Parts such as the E-3: Plug,spark (cr7hs, Clip,valve Guide, Pipe Comp,inlet, Spark Plug Cr7hsa are included in the Nvs501sh Today 2004 (4) Japan Af61-120 E-3 parts fiche.
The component with the lowest price in the E-3 schematic is the Clip,valve Guide.