Grease the O-ring (7), and install it on the front sprocket spacer (6).
Fit the spacer, from the O-ring side, on the secondary shaft and drive it fully home against the inner ring of the bearing.
Before refitting the front sprocket, check that the spacer (6) is installed on the gearbox secondary shaft.
Check that the splines of the gearbox secondary shaft and the sprocket are in perfect condition.
Fit the front sprocket (5) on the gearbox secondary shaft, orienting it as shown. Fit lockwasher (4).
After having applied the recommended threadlocker, tighten the nut (3) to a torque of 186 Nm ±5%.
Bend the washer (4) over the nut.
Fit the chain and close it using the tool (X) no.
88713.1344, which was used to open the chain.
The tool consists of a holder (A), a punch (B), body (C) and two wrenches (D) and (E) and a plate holder (F).
Connect the two ends of the chain with the external link, and manually fit the plate onto the pins.
Fit the holder (A) onto the external link.
Fit the punch (B) into the body (C) and the plate holder (F).
Fit the body (C) onto the holder (A) which holds the chain in position.
Manually turn the bolt (G) until the plate holder (F) is seated against the plate itself.
Use wrenches (D) and (E) to turn the bolt (G) clockwise until the chain pin is in contact with the holder (F).
Remove the holder (A) from the tool.
Manually turn the bolt (G) until the punch (B) is brought into contact with the pin to be riveted, taking care that they are
aligned.
Use wrenches (D) and (E) to turn the bolt clockwise until the punch (B) is seated against the chain plate.
To complete riveting, repeat the entire procedure with the second pin.