Transfers switch by movement of couplings of synchronizers by means of the forks strengthened on rods which are put in action by a hinged part and a head of the lever.

The gear shifting lever assembled with a hinged part is not adjusted.

At detection of a side play of the top part of the lever rather lower the lever changes assembled.

Periodically check smoothness of the course of two sections of the lever relatively each other, and also a condition of a dustproof cover.