1
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This motor kit is for use with
AC garage door openers that
utilize electronic controls to
set the open (UP) and close
(DOWN) travel. The force is
adjusted automatically when
you program the travel. The
images are for reference and
your product may look
different.
You will need:
• 1/4" magnetic nut driver
• Long-nosed
pliers
• 5/16" long-shafted magnetic nut driver and socket
Installation
Overview
1.
Preparation:
Close the garage door.
Disconnect all electrical power to the garage
door opener.
Disconnect wires for the door control (1a) and the
safety reversing sensors (1b) at the logic board.
Disconnect the door arm from the rail (1c).
Remove the garage door opener from the hanging
brackets (1d).
Relax the chain/belt tension by loosening the outer
nut on the trolley.
Remove the sprocket cover (1e).
Remove the belt or chain from sprocket.
Place the loose chain/belt on the end of the rail
nearest the sprocket. Tape the chain/belt to the rail
to prevent the chain/belt from falling to the floor.
Remove the rail from the garage door opener.
To prevent possible SERIOUS INJURY or DEATH from
electrocution, disconnect power to opener BEFORE proceeding.
The garage door MUST be in the fully closed position during
installation.
Motor Kit
Models 041A7767 and 041A7766 - 3/4HP
041A7442 and 041D7440 - 1/2HP
1c
OR
OU
O
1d
1e
CHECK OFF STEPS AS THEY ARE COMPLETED
1a
1b
WARNING:
This product can expose you to chemicals
including lead, which are known to the State of California to
cause cancer or birth defects or other reproductive harm.
For more information go to
www.P65Warnings.ca.gov
