The Screw, Panhead (4u5) is the lowest priced item on this Carburetor schematic.
Some items from this specific schematic: Needle (j8-6en15-57), Pin, Float, Valve, Throttle (c.a 4.5), Jet, Pilot (# 20).
With all the components that make up the YZ125E 1993 4EX2 SOUTH AFRICA 234EX-100E1 CARBURETOR assembly. The Pipe is the most frequently specified with two applications.