Make the rear wheel turn until you find the position where chain is tightest. Set the vehicle on the side stand. Push down the chain at the point of measurement and release. Measure the distance between the "aperture" upper profile and pin centre.
The read distance must be: 9 to 11 mm.

Important
If the drive chain is too tight or too slack, adjust it so that tension reading will fall within specified range.
To adjust the tension remove the rear splash guard (sect. 7 - 13, Removal of the swingarm).
Slacken off the two clamp screws (1) that secure the rear wheel hub to the swingarm.
Fit the hook spanner code 88713.1038 Inserting its tooth in the eccentric hub (2).
Rotate the eccentric hub (2) to obtain the correct chain tension.
Turn counter clockwise to tighten the chain; clockwise to loosen (from chain side).
Important
An incorrectly tensioned chain will lead to accelerated wear of the transmission components.
If the screws (1) are removed, lubricate with specified grease underhead and thread, then tighten the screws (1) to the torque of 35 nm +/- 5% (sect. 3 - 3, Frame torque settings) proceeding with sequence 1-2-1.

Warning
The correct tightening of the fixing screws of the eccentric hub is essential for the safety of the rider and the passenger (sect. 3 - 3, Frame torque settings).
Refit the rear splash guard (sect. 7 - 13, Refitting the swingarm).
Adjusting the steering head bearings
Checking brake pad wear and changing brake padsRiding safety
The points given below are applicable for every day
motorcycle use and shoud be carefully observed for safe and
effective vehicle operation.
A motorcycle does not provide the impact protection of an
automobile, so defensive riding in addition to wearing
protective apparel is extremely importa ...
Checking valve clearances
To check the valves clearance, it is necessary to have access to the cylinder
head covers and then remove the
components listed below.
Unscrew the two fixing screws (1) of the cover (2) according to the
crankshaft.
Fit the tool handgrip 88713.0123 In the holes of the generator cover t ...
Refitting the timing covers
Locate vertical cylinder external cover (25), horizontal cylinder external
cover (3) and central external cover (1) by
starting the screws (4).
Apply the recommended threadlocker to the screws (4).
Tighten the screws (4) to a torque of 10 nm (min. 9 Nm - max. 11 Nm) (sect. 3 -
3, Engine t ...