Refitting The Head And Timing System Components; Timing Chain Tensioner Support Screw - PIAGGIO XEVO 125 Euro 3 Service Station Manual

Engine

Refitting the head and timing system components

- Fit the timing chain guide pad.
- Insert the centring dowel between the cylinder
head to the cylinder, fit the cylinder head gasket
and the cylinder head.
- Lubricate the stud bolt threading.
- Tighten up the nuts to a pre-torque of 7±1 N·m
- Rotate by a 180° angle (2 rotations of 90° each)
- To carry out the operations described above, fol-
low the tightening sequence in the figure.
- Fit the two screws on the outside of the timing
chain side and tighten them to the specified torque.
N.B.
BEFORE INSTALLING THE HEAD, MAKE
SURE THAT THE LUBRICATION CHANNEL IS
CLEAN USING A COMPRESSED AIR JET.
Locking torques (N*m)
Timing chain tensioner support screw 11 ÷ 13
Assemble the lower timing chain sprocket wheel on the crankshaft, with the chamfer facing the insertion
side.
- Loop the timing chain around the sprocket on the crankshaft.
- Fit the chain tensioner slider from the cylinder head side.
- Fit the spacer and the screw fastener.
- Tighten the screws to the prescribed torque.
Locking torques (N*m)
Slider screw 10 ÷ 14 Nm
ENG - 44
XEVO 125 Euro 3