Manuals through 2025 now available!
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Valve Spring
VALVE SPRING Free height
50.47 mm (1.987 inch)
Valve closed (installation) height
40.0 mm (1 575 inch)
Valve open height
30.0 mm (1.181 inch)
Pressure at valve open height
Standard
770 - 837 N (78.5 - 85.4 kg, 173.1 - 188.2 lbs.) at 30.0 mm (1.181 inch)
Limit
733 N (74.8 kg, 164.8 lbs.) at 30.0 mm (1.181 inch)
Out-of-square
2.0 mm (0.079 inch)