Throttle Shaft Bush, HS4 1-1/2″ SU

A Worn throttle Shaft (spindle) can cause erratic performance and sometimes the housing is worn as well. 

This bush is used on both sides of the carburettor to repair a worn carburettor body, often required when replacing the throttle shaft (spindle) on the HS4 carburettor.

As a guide the internal diameter is .3125 you may have to ream body to 9.55mm.