Valve Spring: Specifications

Valve Spring:
Free Height 49.8 mm (1.960 in.)
Service Limit 48.8 mm (1.920 in.)
Loaded Height 40.4 mm at 33 kg (1.59 in. at 73 lbs.)

Perpendicularity:
Intake and Exhaust 2° Maximum
Service Limit 4° Maximum