Clean any residues of the old basket from the lower cylinder head
plane.
Check that the atness of the lower cylinder head plane corre-
sponds to the recommended.
Cylinder head
Lower surface atness = 0.1 ± 0,05
If the planarity of the lower cylinder head plane does not corre-
spond to the recommended gures, regrind it without exceeding
the minimum permitted height.
Cylinder head
Lower plane minimum permitted
height
= 107.0 ± 0.05
Check that the valves do not show signs of scoring or seizing.
Check that the diameter of the valve stems corresponds to the
recommended gures; if not, replace the worn valves.
Inlet valve stem diameter = 5.982 ÷ 6.000
Exhaust valve stem diameter = 5.972 ÷ 5.990
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