O.S. Carburetor Retainer 21EX-B/RTower Stock# OSMG3644 • Manufacturer Stock# 23981700
Notes from our tech department:
This is the part that holds the carb in place, it is located just under the
carb and is black in color. This has two halves that are pulled together by
one cap head screw.
One complete carb retainer
This is a direct replacement part only, it may work on other engines