VESPA LX 150 4T Euro 3 Service Station Manual page 110

Engine
- Refit the spacer on the cam shaft.
- Rotate the engine so that the piston is at top dead
centre, using the reference marks on the flywheel
and the crankcase.
- While doing so, fit the chain onto the control cam-
shaft pulley and keep the reference 2V in corre-
spondence with the reference mark on the head.
- Fit the pulley onto the camshaft.
- Assemble the counterweight with the corre-
sponding fixing screw and tighten to the specified
torque.
Locking torques (N*m)
Locking torque
7 to 8.5
-Fit the end-stop ring on the automatic valve lifter
cam and fit the automatic valve lifter cam to the
cam shaft.
- Fit the automatic valve lifter return spring.
- During this operation the spring must be loaded
approximately 180°.
N.B.
GREASE THE END STOP RING TO PREVENT IT COMING
OUT AND FALLING INTO THE ENGINE.
- Fit the automatic valve-lifter retaining dish, using
the counterweight screw fastener as a reference.
- Tighten the clamping screw to the prescribed tor-
que.
Locking torques (N*m)
Locking torque
12 to 14
- Set the tensioner cursor in the rest position.
- Fit the chain tensioner on the cylinder, using a new gasket, and tight the two screws to the prescribed
torque.
ENG - 110
Vespa LX 125 - 150 4T Euro 3