Gymrex GR-MG 63 Manual De Instrucciones página 21

e) At the contact points of the backrest support frame (7) and the side machine
frames (1.2), align the hole axes. Fasten the assembly with M12x140 screws,
M12 washers and M12 locknuts. To do this, insert a washer onto main fixing
screw. Insert a screw with a washer into the upper hole axis, and then secure
it from the bottom with a washer and nut. Repeat the procedure for all holes.
STEP II
a) Fix the training handle arm (8) and the load arm (10) to the left side frame.
Fasten the training handle arm (8) on both sides with bearing washers and
M8x20 screws. Fasten the load arm (10) on the outside of the machine
with a bearing washer and M8x35 screw. On the inside, fix it with a bearing
washer and M8x20 screw.
b) Connect the training handle arms and load arms using a power fastener
(9). Slide an M10 washer onto an M10x20 screw and attach it. Repeat the
procedure for all holes.