Valve / Rocker / Tappet, Adjusting Screw, M8, 1200-1600cc
Often called a "tappet" these can mushroom and wear over time as they constantly tap the end of the valve to induce movement. This is a standard replacement M8 adjusting screw as found on 1200-1600cc engines. Over time the tip of the adjusting screw can wear irregularly, this can lead to difficulty in adjusting the "tappet" gaps. Fitting a new set of adjusting screws will eliminate this problem.