Aussie PRO RUNNER Owner's Manual page 7

ASSEMBLY
Assemble the treadmill arms by removing the black bolts from frame
and sliding the arms into the slot. Fasten together with the black bolts.
Do not tighen all the way. This will leave some wiggle room to get the
center column on easily. After the center column is bolted on you can adjust the arms
by pivoting back and forth until they are aligned.
*BE SURE TO GO BACK AND FFULLY TIGHTEN AFTER THE CENTER COLUMN IS ON*
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