4. Put the threaded rod through the hole and run the spring, washer, and nut onto the threaded rod as
shown below. Before tightening the nut, check again that the belt is centered on the belt wheel on both
ends. Tighten the nut until the spring is almost entirely compressed, as shown below. The boom rail
assembly is now complete.
Figure 5
Mounting the wall bracket and door bracket
Figure 6
Wall bracket - Close the garage door and measure the
garage door width at the top and mark the center. Locate and
mount the wall bracket 2 cm - 15 cm above the door on the
inside wall. (Depending on the actual installation space).
Door bracket - Attach the door bracket to a structural part
of the door as close to the top edge as possible.
*Mounting screws for door bracket are not included in the package.*
36
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