MOTO GUZZI Daytona RS Workshop Manual page 59

INSPECTION OF VALVE SPRINGS
Check that the springs are not deformed and have not lost their load:
External spring
■ free, has a length of 40,3;
■ with closed valve, has a length of 35 mm and must give a load of 20,33÷22,47 kg;
■ with open valve, has a length of 24,4 mm and must give a load of 60,8÷67,2;
■ compressed, has a length of 21 mm.
Internal spring
■ free, has a length of 37,9 mm;
■ with closed valve, has a length of 33,5 mm and must give a load of 9,215÷10,185;
■ with open valve, has a length of 22,9 mm and must give a load of 31,35÷34,65;
■ compressed, has a length of 19.6 mm.
If the springs do not satisfy the above specifications they must be replaced.
Kg. 20.33÷22.47
Kg. 60.8÷67.2
EXTERNAL SPRING
ROCKER ARM PIN
35 mm
24.4 mm
Ø4
Kg. 9.215÷10.185
Kg. 31.35÷34.65
40.3 mm
Ø14.994÷14.983
22.9 mm
INTERNAL SPRING
ROCKER ARM
Ø15.032÷15.059
37.9 mm
33.5 mm
10-53
10-54
57