Insert the key in the lock, turn it clockwise and release the seat.
Pull the seat (1) backwards to release it from the front catches and remove it.

Seat
Disassembly of the seatRemoval of the timing gears
Slide out driving gear (a) of timing gear pair (13) and remove the woodruff
key (14).
Relieve the staking on the lock washer (12) of the nut (11).
Restrain the driven timing gear by inserting a pin in one of the holes, and
unscrew the nut (11).
Remove the nut (11), washer (12) ...
Reassembly of the crankcase halves
If removed, apply threadlocker on the screw (36), insert it with the washer
(37) on the crankcase half and tighten it to The torque of 8 nm
(min. 7 Nm - max. 9 Nm) (sect. 3 - 3, Engine torque settings).
If removed, apply threadlocker on the dowel thread (35), tighten it to a
torque of 20 ...
Refitting the rear wheel
Lubricate the wheel shaft threaded end with prescribed grease.
Insert the wheel shaft by matching (a) with pins (b).
Install spacer (3) with the conical surface faced to the wheel conical
surface, washer (2), apply prescribed grease to nut
(1) and insert it by hand (1).
Tighten the ...