Gymrex GR-MG120 Manual De Instrucciones página 23

a) Attach the front stabilizer (1) to the main frame (3). Use screw (4), washers
(5)
GR-MG124 Model has an additional spring washer, mounted between the
washer and the lock nut.
b) To mount the rear stabilizer (2), proceed similarly.
c) It is possible to level the device by turning the levelling bases (7) left or
right.
STEP II
and nuts (6) for this purpose.