Fits :
Type-1 engines until 7.1971 (except 25hp+30hp engines)
Type-3 engines until 7.1971
Specifications:
Valve lash: 0.15 mm
Valve lift: intake 8.484 mm - exhaust 7.976 mm
Duration: 250°
Duration @ 1.27 mm: 214°
Lobe center: 108°
Paruzzi number : 03787