Clean cylinder head sealing surface and valve head.
Install, Connect
Place Measurement Bridge KM-301 (1) on cylinder block. Insert Dial Gauge MKM-571-B (2) into Measuring Bridge KM-301 and fasten under pretension. Adjust dial of dial gauge to zero.
Inspect
Place Measuring Bridge KM-301 with Dial Gauge MKM-571-B on valve head - ensure that probe of gauge lies on valve head. Read off displayed value from gauge.
Permissible indentation: 0.25 to 0.75 mm.
If the permissible indentation is exceeded, replace the valves or, if necessary, the cylinder head.