To adjust the intake valves, insert a 0.203 mm (0.008 in.) feeler gage between the tip of the valve stem and the valve button at the end of the rocker arm. Loosen the locknut, and turn the adjusting set screw until the feeler gage produces an even smooth pull between the valve stem and valve button.
250/260 Series Valves 254/264 Series 252 Series Valves
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VALVE ADJUSTMENT 300 to 500 K MILES ... Clutch/Throttle/Buffer A A/R Safety Valve Screw Assembly I R Solenoid Valves R ... DETROIT SERIES 60, 11.1L 760 19875 19875 ...