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Chamberlain AccessMaster M885 - Attach the Rail to the Header Bracket; Position the Garage Door Opener

Chamberlain AccessMaster M885
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7
Installation
3 Attach the Rail to the Header Bracket
1. Align the rail with the header bracket. Insertthe clevis pin through the holes in the header
bracketand rail. Secure with the ring fastener.
NOTE: Use the packing material as a protective base for the garage door opener.
HARDWARE
Clevis Pin 5/16" x 2-3/4" Ring Fastener
Ring
Fastener
Clevis Pin
5/16" X 2-3/4"
4 Position the Garage Door Opener
To preventdamage to garage door, rest garage door opener rail on 2x4 placed on top section of
door.
1. Remove the packing material and liftthe garage door opener onto a ladder.
2. Fully open the door and place a 2x4 (laid flat) under the rail.
A 2x4 isideal for setting the distance between the rail and the door. Ifthe ladder isnot tall enough you
will need help at this point.Ifthe door hits the trolley when it is raised,pull the trolley release arm down to
disconnectthe inner and outer trolley. Slide the outer trolley toward the garage door opener.The trolley
can remain disconnected until instructed.
Connected Disconnected

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