Check the listing for details. Genie 30257T Screw Drive Coupler. Condition: New. Listed at 7.52 USD. Genie 30257T Screw Drive Coupler 100% Brand New Authentic Genie Part Typical symptoms of a stripped Screw Coupler is a grinding noise coming from the rear of the motor head. The motor turns but the screw does not. Remove Coupler and check if it is stripped or has no more threading. On Genie's "clutchless" openers, there is a small plastic coupler that connects the screw assembly rail to the main power head. To inspect and replace that part, remove the two screws holding the rail to the main power head. Slide the rail away from the main power head. The coupler may still be attached to the motor shaft. Remove the coupler with a pair of needle nose pliers and inspect both sides of the coupler. Note: If the screw assembly on your Genie garage door opener protrudes out the back end of the main power head, you do not have a "clutchless" opener, and there is no coupler on that opener. For use with screw drive openers. Connects the motor to the rail assembly. For Clutchless Screw Drive Openers