Valve overlapping means Exhaust valve is about to close and the Intake valve is
about to open. Both pushrods are now non-rotatable.
Check valve clearance for valves marked in black (fig 5-58), using a feeler gauge (2, fig 5-59). Gauge should just
slide into gap (3. fig 5-60) between rocker arm lug (4) and valve (5):
Intake valve (I) 0.2 mm
Exhaust valve (E) 0.3mm
If gap is too small or too large, loosen locknut (1, fig 5-60) one or two turns and turn adjusting screw and turn
adjusting screw (2) with a screwdriver (1, fig 5-59); once locknut is tightened gauge should slip out with little
Replace O-ring (3, fig 5-56) and gasket (S5) with new ones.
Install valve cover (4), packing perform (2), and screw cap (1).
Tighten to 12 Nm.
5-240 Change 2