Serpento FORZA 150 Manual De Usuario página 117

Note:
As the valve clearance imposes a marked impact on the engine performance, inspection and adjustment shall be severely observed at a regular
time interval specified in the Scheduled Maintenance Scheme.
The valve clearance increases with the passage of time and thus affects engine performances by producing loud noise and abnormal suction/
exhaust processes. Therefore periodic adjustment, preferably done by professionals with special tools, of valve clearance is essential. To obtain
an optimal valve clearance, the adjustment is recommended to be finished by the motorcycle distributors or the maintenance center.
Valve clearance adjustment is essential for new motorcycles on the completion of their first 1000 km.
Adjustment of clutch
Clutch adjustment is made through adjusting the tension of wire rope for clutch grip. Before feeling the gear disengagement by pressing the
clutch grip, the wire clearance measured at clutch grip shall be 4 mm. If the clutch wire clearance is found incorrect, carry out adjustment as
follows.
Loosen nut (2) and rotate the grip tensioning ring (3) clockwise to the stop. Loosen the wire rope adjusting ring lock nut (6), and rotate the
wire tensioning ring (5) back and forth, until the grip clearance is about 4 mm. Grip tensioning ring (3) can be used for fine tuning. After the
adjustment is completed, tighten locking nut (2) and (6), and cover them with rubber sleeve (4).
54