Troy-Bilt Thoroughbred 654J Operator's Manual page 7

Attaching the Control Box
5. Remove the four Phillips screws and lock nuts from
the control box plate.
6. Insert the ends of the two springs into the holes found
in the control levers located on the underside of the
handle panel.
7. Using a Phillips screwdriver and a 7/16" wrench,
secure the control box to the underside of the handle
panel with the four screws and lock nuts removed
earlier.
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