Impex MARCY DIAMOND ELITE MD-3401 Owner's Manual page 14

STEP 5 (See Diagram 5)
A.) Slide the Right Butterfly (#10) onto the right axle on the Butterfly Base (#13).
B.) Insert the Butterfly Handle (#9) into the pivot on the Right Butterfly. Secure it with one
M10 x ¾" Allen Bolt (#78) and  1 ¼" Washer (#59) from the bottom.
C.) Repeat Procedures A and B above to install the other side. Do not over tighten the Bolts.
Make sure the Handles are able to swivel.
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DIAGRAM 5