O.S. Rotor Stop Screw #40BTower Stock# OSMG8585 • Manufacturer Stock# 25681620
Notes from our tech department:
engine. This throttle stop screw is located on the FX's #40B carburetor.
1- throttle stop screw
3mm x 20mm, .5mm coarse threads.
This is the screw that keeps the throttle barrel from closing all