Visual Inspection
- Remove all carbon deposits from each valve (1).
- Check each valve for wear, burn or distortion at its face and stem end and replace if necessary.
- Measure valve protrusion length "a".
Replace valve and/or cylinder head if measured length is out of standard value.
Valve protrusion length "a"
Standard
IN: 44.00 - 44.60 mm (1.733 - 1.755 in.)
EX: 42.85 - 43.45 mm (1.687 - 1.710 in.)