Nice M3BAR Instructions And Warnings For Installation And Use page 58

remove the spring from the drilled plate, located at the
5.
base of the cubicle
11
6. to set the boom's closing manoeuvre on the right of the
cubicle, unlock the gearmotor (refer to the "Manually
unlocking and locking the gearmotor" paragraph) and
turn the balancing lever by 90°
12
90°
58 – ENGLISH
M3BAR-M5BAR
M7BAR-L9BAR
7. with the help of "Figure 6", identify the new holes to which
to attach the two ends of the spring
fasten the spring to the drilled plate, located at the base
8.
of the cubicle
13
9. fasten the spring's eyelet to the balancing lever, tightening
the bolt vigorously
14
if the gearmotor was previously unlocked, lock it again.
10.
M3BAR-M5BAR
M7BAR-L9BAR
M3BAR-M5BAR-M7BAR
L9BAR