Beta Motorcycles X Trainer 300 2T 2015, Workshop Manual, Page: 42 / 117

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2.8.3 Internal gearshift unit
and complete gearbox
The internal gearshift unit is made up of the
desmodromic device 1 upon which the fork 2 and
two forks 3 are engaged. The forks, supported by
the pins 4 , drive the sliding wheels of the gearbox,
allowing engagement of the desired ratio. The
desmodromic device is controlled by the stop
cam present in the external gearshift unit.
Extract the two pins 4 by hand so that the forks
can be released and removed.
Turn the fork 2 which drives the sliding gear on
the primary unit clockwise, to free it from the
desmodromic control.
Do the same operation, though in the opposite
direction, on the forks 3 driving the sliding gears
on the secondary shaft.
Extract the desmodromic device.
Extract the forks together with the drive bushes 5 .
Removal of fork support pins 1.
Extraction of forks from gearbox unit.
Disengaging of drive forks from the desmodromic device.
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