Valve Gear, Servicing

Valve gear, servicing

Note:
^ Cylinder heads which have cracks between the valve seats or between valve seat inserts and the spark plug thread can be used further without reducing service life, provided the cracks do not exceed a maximum of 0.3 mm in width, or when no more than the first four spark plug threads are cracked.
^ When new lifters have been installed the engine must not be started for about 30 minutes. (Otherwise valves will contact pistons) First, rotate crankshaft two complete revolutions.