O.S. Needle Valve Assembly 91SZ-H HyperTower Stock# OSMG7051 • Manufacturer Stock# 29181900
O.S. Max 60M Carburetor (OSMG2517) used on the .91SZ-HPR Engine.
Threads into carburetor body and control mid range carburetor
Needle Holder Assembly with two metal washers and needle
Installing in carburetor body and adjusting following instructions in
Also available without needle, OSMG7142