PIAGGIO Runner 125 - Refitting the head and timing system components

Cam shaft check: Maximum admissible axial
clearance
0.42 mm
Cam shaft check: Standard axial clearance:
0.11 - 0.41 mm
Cam shaft check: Standard height
Outlet: 29.209 mm
Cam shaft check: Standard height
Inlet: 30.285 mm
Cam shaft check: Minimum admissible diame-
ter
Bearing B diameter: 19.950 mm
Cam shaft check: Minimum admissible diame-
ter
Bearing A Ø: 36.94 mm
Cam shaft check: Standard diameter
Bearing B diameter: 19.959 ÷ 19.98 mm
Cam shaft check: Standard diameter
Bearing A Ø: 36.95 ÷ 36.975 mm
Refitting the head and timing system components
Assemble the lower timing chain sprocket wheel
on the crankshaft, with the chamfer facing the in-
sertion 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
Engine Runner 125 - 200
ENG - 168