Adjusting Garage Door Opener Chain Tension

Remember to not over tighten the chain.

Adjusting garage door opener chain tension.

The adjustment bolt a bolt with threads which the chain is connected to has a pair of adjusting nuts on either side of the assembly. This should remove the opener connections from the garage door. Loosen the adjuster three turns counterclockwise if the door raised without. A sagging chain is a result of normal usage of the garage door opener.

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The chain is a very important component that makes up a garage door opener system. Tightening the chain of an overhead door company legacy model garage door opener. Tighten the adjuster three full turns clockwise to add tension if the door closed and did not remain open halfway. Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release.

Just tighten enough to stop it hitting the rail. Chain adjusts by shortening the chain itself. You can then use your step ladder to look at the carriage assembly. Determine changes in slack by using a measuring tape to measure the distance between the middle of the chain and the roof.

Adjustments on the chain are located at or near the master link where the chain engages with the cable graphic below left. Once the power is out give the emergency release rope a tug.