Gymrex GR-MG 63 Manual De Instrucciones página 22

STEP III
a) Place the backrest (13) on the backrest support frame (7). Secure from the
bottom with an M8 washer and M8x20 screw. Repeat the procedure for all
holes.
b) Fasten the seat bracket (11) to the seat support frame (6). For this purpose,
use a sliding sleeve fastener, screws, washers and locknuts.
c) Place the seat (12) on the assembled structure. Secure with M8 washers and
M8x20 screws.
All connections of the machine should be fixed and pressed correctly. After
completing the assembly activities, it is allowed to start working with the
machine.
Before each use, adjust the seat height according to your preferences. To adjust
the seat position, move it seat up or down.