You loosen the locking inner nut and turn the outer nut clockwise to adjust the excess slack from the chain.
How to adjust chamberlain garage door chain.
Do not over tighten the chain.
I am not a professional.
Position ladder below the back or rear portion of the opener to access the screws.
From informational videos to product manuals and troubleshooting articles the chamberlain group resource library has the information you need.
Documenting how i repaired the garage door.
Find the chamberlain garage door opener technical support you need to get your garage door opener operational.
Sure the garage door opens far enough for your vehicle but not past the point where the bottom of the garage door is even with the header of the garage door opening.
These usually consist of a bolt with two or three nuts one or two for locking or a nut and lock washer and one for adjusting.
Remember to not over tighten the chain.
Establishing the travel limits of chamberlain garage door openers.
A flathead screwdriver is all that is needed to make a limit adjustment on most garage door openers.
If the up travel isn t functioning properly turn the up limit adjustment screw clockwise.
The chain got loose and popped off the gear.
Replacement gear kit if you need one http amzn to 2drtdvc if you.
Just tighten enough to stop it hitting the rail.
This will cause premature wear on the chain rollers.
This video demonstrates how to program the travel on a chamberlain garage door opener with a yellow learn button.
Note adjustment screws are on the left side of garage door opener motorheads.