Head unit: valves - rocker arms
Fit the split rings (7) to the valve stem.
Remove the two screwdrivers and place the closing rocker arm (18) in the rest position.
With the valve in the rest position, push on the rocker arm to counteract return spring action and check clearance
between rocker arm sliding shoe and closing shim (Sect. N 4.1,
clearance is outside the specified limit, adjust valve clearance (Sect. N.4.1,
Fit the opening shim (6) to valve stem.
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Checking closing clearance (Sc) at
Checking and adjusting valve
exhaust/intake). If
clearance).