Name: Chamberlain Merlin MT5580
Brand: Chamberlain
Rating: 5 (1 reviews)

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ASSEMBLY SECTION –

FASTEN T-RAIL & ATTACH CHAIN SPREADER –

Place packing material under the opener to protect the opener cover. For convenience,

place a support under the chain pulley bracket end of rail.

Remove Styrofoam from rail end and the (2) washered screws (4) from the top of the

opener. Align holes in back end of the T-rail with holes in opener (7).

Fasten the rail to the opener with the same washered screws and tighten securely.

Caution: Use only those screws!

Use of any other screws will cause serious damage to the door opener.

Attach the chain spreader (2) with hex screws (1) and flat washers (3).

TIGHTEN THE CHAIN -

Insert the threaded shaft (2) through the hole in the trolley (1). By hand, thread the spring trolley nut (3) on the threaded shaft until finger tight

against trolley. Insert a screwdriver tip (4) into one of the slots of the nut ring (7), and hold firmly. Using an open end wrench (5) at the square end

(6), slightly rotate the assembly clockwise until the nut ring (7) is released against the trolley, providing tension for the best operation of the opener.

ASSEMBLY OF YOUR OPENER IS NOW COMPLETE.