Checking procedure
Insert the new valve into the guide sleeve. The end of the valve stem must be covered by the guide bushing. Due to the different stem diameter, use the intake valve in the intake valve guide only and the exhaust valve in the exhaust valve guide (pic. 2.96).
Determine the play when the valve swings. Wear limit: 0.8 mm.
If the rocking play is exceeded: Replace the cylinder head.
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