On the master link you will see two or three nuts.
Garage door chain drive adjustment.
Adjust the chain on a garage door opener with help from a garage door spec.
If you stand at the door facing the motor you will probably see the threaded rod that adjusts the chain length on the right side of the door.
Adjustments on the chain are located at or near the master link where the chain engages with the cable graphic below left.
Both adjustment types should be done with the door closed and disconnected from the opener using the emergency release.
Craftsman hp chain drive garage door chain drive garage door opener chamberlain liftmaster travel limit and chamberlain liftmaster travel limit and gdr02m garage door opener user manual garage door opener chain adjustmentgarage door opener chain adjustmenthow to adjust the chain on a drive garage door openerhow to replace a garage door opener drive chain.
There may be an adjustment linked to the chain or an adjustment to the length of the door opener track.
Use the wrench to loosen the lock nuts and turn the adjustment nut to set the slack in the chain.
There are only a few ways that the chain can be tightened.
Loosen the two lock nuts on the threaded rod.
Lower the garage door to take the stress off the chain.
The chain is a very important component that makes up a garage door opener system.