APRILIA SCARABEO 125 Service Manual page 111

SCARABEO 125 - 200
•
Fit the camshaft, the gears and the chain in their correct positions, using the references
marked when these parts were removed.
•
Fit the cam tower and tighten the eight screws to the prescribed torque.
•
Fit the chain tensioner.
•
Use two Ø 6.3 mm (0.248 in) timing pins to check the camshafts are correctly timed.
•
Check for correct valve clearance.
•
Fit the head cover.
Inspecting the springs and half-cones
•
Check that the spring upper supporting
caps and the cotters show no signs of
abnormal wear.
•
Check the unloaded spring length.
Characteristic
Valve spring length:
33.24 +/- 0.25 mm (1.3086 +/-0.0098 in)
Refitting the valves
•
Lubricate the valve guides with engine
oil.
•
Place the two oil seals on the head us-
ing a punch.
Specific tooling
AP0277512 Fitting buffer
- Fit the valves, the springs and the caps. Using the appropriate tool, compress the springs and fit the
cotters in their seats.
Engine
ENG - 111