Pic. 2.311. Determining valve guide backlash
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 inlet valve only in the inlet valve guide and the exhaust valve in the exhaust valve bush respectively.
Determine the play when the valve swings. Limit tolerance max.: 1.3 mm.
If the backlash exceeds the wear limits, replace the cylinder head.
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