The Shaft Coupler Is located on the rail assembly where the Motorhead and Bearing Block meet. Installing the couple is as easy as flipping the rail upside down and placing it on the Screw Drive and Motorshaft. When placing the Coupler it is good to know that the Small hole connects to the motor shaft while the large hole fits over the Screw Drive.
Works with Genie Garage Door Opener models G Power 900, TriloG 1200, and TriloG 1500
For a complete list of Genie G Power 900, TriloG 1200/1500 Rail Parts
For all Genie Brand Garage Door Opener Parts