Check the condition of the front coupling dogs of the gears. They must be in perfect condition and with no sign of wear on the edges of the teeth.
The idler gears must rotate freely on their shafts.
When refitting, make sure the circlips are correctly positioned.
Check the needle roller bearings for wear.
The threads and splines of the shafts must be in perfect condition.
Also check that the component parts of the gear selector mechanism are in good condition.
Engage

Engage the gears and check that the gearchange mechanism does not stick (selector fork - gear groove, and fork pin - desmodromic drum groove) due to incorrect end float. Restore the correct end float by shimming the gearbox shafts and the selector drum with suitable shims.
For the total gearbox shaft and selector drum end clearance values, refer to sect. 3 - 1.1, Gearbox.
Disassembly of the gearbox shafts
Inspection of the gear selector forksEngine on/off
Warning
Before starting the engine, become familiar with the
controls you will need to use when riding (page 99).
Warning
Never start or run the engine indoors. Exhaust gases
are toxic and may lead to loss of consciousness or even
death within a short time.
In the presence of the active or ...
Number plate light not working
Fault codes
Dds: no fault code displayed.
Dashboard: no fault code displayed.
Location of connections and components
Location of rear turn indicator and number plate light connection.
pin numbering for wiring harness side dashboard connector.
Checks
The number plate light receives p ...
Display background colour (automatic adjustment)
Instrument panel background colour is set automatically
according to exterior lighting conditions.
When sensor detects "poor lighting" (night), it switches to
black background mode; vice versa when a "significant"
lighting is detected (day), it switches to white background
...