YOTRIO 68840815 Instructions De Montage page 4

Place the SEAT (C) sideways on a flat, protected surface. Connect LEFT
ARM (A) to SEAT (C) using BOLT (M6*35) (F).Tighten one hand.
2
Tighten all bolts with ALLEN WRENCH (L).Don't overtighten.
Excessive tightening may cause peeling and cleaning of bolts.