Automatic Garage Door Opener OWNER INSTALLATION AND USER MANUAL

Step Four: Setting The Chain

Pull the chain assembly to the front rail

bracket. Insert the “U” bolt through the holes in

the front rail bracket and fasten with two 5/16”

lock washer nuts. Ensure the chain is on the

sprocket of the Motor Head, and finger tighten

the nuts equally.

NOTE: Do not remove plastic tie from

chain.

Step Five: Setting The Chain Latch Assembly

Attach the chain latch assembly to the roll pin of the trolley as illustrated.

Step Six: Rail Assembly Alignment

Turn the rail assembly upside down and place the plastic rail

alignment tool onto the meeting point of the two rails. Tighten

down the 5/16” lock washer nuts on the side of the splice bracket

with the rail alignment tool in place. Move rail guide alignment

tool to other side and tighten remaining 5/16” lock washer nuts.

Repeat at other splice bracket location. Turn rail right side up.

Remove plastic tie from chain. Ensure the chain remains on the

sprocket at the motor head. Tighten the “U” bolt lock washer nuts

evenly against the front rail so that the chain is approximately

5/8” above the rails.