Valve Spring: Testing and Inspection

INSPECTION





1. Check the valve spring free length and tension. If they exceed the service limit, replace the spring.
2. Using a square, test the squareness of each spring. If the spring is excessively out of square, replace it.

Valve Spring Standard Value:
Free height: 46.07 mm (1.8137 inch)
Load:
25.5 kg at 37 mm
57.3 kg at 28 mm
Out of square: 3° or less.