Valve Spring: Specifications

Valve spring free length	Inner	Standard	36.08 mm
		Limit	35.00 mm
	Outer	Standard	40.44 mm
		Limit	39.22 mm
Valve spring preload	Inner	Standard	6.9 - 7.9 kg for 27.5 mm
		Limit	6.2 kg for 27.5 mm
	Outer	Standard	15.4 - 17.8 kg for 31.7 mm
		Limit	13.8 kg for 31.7 mm
Valve spring squareness		Limit	2.0 mm