How To Install Chain Spreader On Garage Door Opener

How to put a chain back on an automatic garage door opener.

How to install chain spreader on garage door opener.

Climb up and slide the pulley towards the end of the chain arm until the chain is tight then slide it back toward the motor just enough so the chain touches the top of the chain arm. Pull the emergency release rope to release the trolley from the garage door. Liftmaster 41c4220a gear and sprocket assembly. Align the rail s and header bracket s holes and use one of the provided clevis pins to join them together.

Rail attached to the header bracket. Remove the fastener ring from the straight door arm connected to the outer trolley. The chamberlain group inc. Liftmaster garage door opener 41a4208 2 chain spreader works with liftmaster and chamberlain openers.

Manufactures and markets some of the world s most reliable efficient and cost effective garage door opener products for do it yourself installation. Disengage the garage door from the opener by pulling down on the emergency pull cord to release the door trolley from the opener carriage. Liftmaster 31d380 sprocket cover. Now you can tighten the bolts that hold the pulley in place.

Press the wall control button or remote so that the opener completes its close. Secure it with a ring fastener. With the garage door opener on the floor lift the rail until it reaches the header bracket.