Valve Spring
- Check the valve springs for damage, free length, and tension. Replace the valve spring if it is not within the standard value presented in the table.
- To measure the squareness of the valve spring, stand the valve spring on a surface plate and measure its deflection at the top of the spring using a try square.
Free length mm (in) 49.06 (1.9315) Tension/spring height N (kgf, lb)/mm (in) Set 182 - 210 (18.6 - 21.4, 40.9 - 47.2) /31.0 (1.220 in) Lift 316 - 350 (32.2 - 35.7, 71.0 - 78.7) /21.0 (0.827 in) Squareness 2.5°, 2.1 mm (0.083 in) or less