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7
Assembly
STEP 2 Fasten the rail to the motor unit
To avoid SERIOUS damage to garage door opener, use ONLY those bolts/fasteners mounted in the
top of the opener.
1. Insert a 1/4"-20 x 1-3/4" bolt into the cover protection bolt hole on the back end of the rail as
shown. Tighten securely with a 1/4"-20 locknut.DO NOT overtighten.
2. Remove the boltsfrom the top of the motor unit.
3. Use the carton to support the front end of the rail.
4. Place the “U” bracket,flat side down onto the motor unit and align the bracket holes with the
bolt holes.
5. Fasten the “U” bracket with the previously removed bolts ; DO NOT use any power tools. The
use of power tools maypermanentlydamage the garage door opener.
6. Attach chain spreader to the motor unit with two screws.
“U” Bracket
Hex Screws
8-32x7/16
Cover
Protection
Bolt Hole
Bolt
Lock Nut
Bolts (Mounted in the
garage door opener)
Chain
Spreader
Bolt
1/4"-20x1-3/4"
Lock Nut
1/4"-20
HARDWARE
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