
Step 2: Install a crossbeam (5) on the supporting tube (2) closest to the folding connector, making sure
the crossbeam is centered on the supporting tube. Locate the M8*20 carriage bolts in the crossbeam
and align each of them with a slot in the supporting tube. Place
φ8 Flat Washers (6) below the
supporting tube and secure the bolt and washer in place with M8 lock nuts (7). Be sure to fully tighten
the lock nut.
Two M8*20 carriage bolts are
pre-installed in the crossbeam.