Rear chain sprocket, secondary drive sprocket and chain
The gure at the side shows the proles of a normally worn and an exceedingly
worn sprocket.
1 Normal wear
2 Exceeding wear
If the sprocket is exceedingly worn, replace it after loosening the six screws that
retain it to the hub.
Chain and sprockets must always be replaced as a set.
Tightening torque gures
3: 34.3 Nm, 3.5 Kgm, 25.3 ft/lb + LOCTITE 243