VALVE SPRING INSPECTION

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1. Measure the valve spring height using the spring tester.

  • If it is not within the specification, replace the valve spring.

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  Valve spring installation height

  37.90 mm {1.492 in} (171.5 N {17.49 kgf, 38.55 lbf})

2. Measure the amount of off-square on the valve spring using a square.

  (1) Rotate the valve spring one full turn and measure A at the point where the gap is the largest.
    • If it exceeds the maximum specification, replace the valve spring.

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    Maximum valve spring off-square
    3.17 mm {0.124 in}