Valve: Testing and Inspection

CHECKING
- Visually inspect for traces of scoring on valve stem and valve seat surfaces. Replace valves with scored surfaces.

REFACING INTAKE VALVES





- Alpha - 45°
- a - max 3.5 mm (0.138 inch)
- b - min. 0.5 mm (0.020 inch)

REFACING EXHAUST VALVES

CAUTION:
^ Exhaust valves must not be refaced by cutting or grinding.
^ Only lapping is permitted.