Refer to the owner s manual to determine which is.
Adjusting liftmaster garage door opener.
When the garage door is in your desired up open position press and release the rectangular adjustment button.
The garage door opener light will blink twice and the down arrow light will begin to blink.
You might damage the motor of your garage door opener if there is a lot of resistance from the door tracks.
Before you adjust the force setting of your garage door opener ensure your garage door tracks jambs and rollers are in good condition.
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We design and engineer residential garage door openers commercial door operators and gate entry systems.
Adjust the garage door opener mechanism.
Locate the manual force adjustment dials at the back of the liftmaster garage door opener.
On the garage door motor there will be two knobs or dials to adjust the opener and the reverse sensor.
Use both the up and down arrow buttons for adjustment.
The travel distance limit setting and the downward force limit setting.
Each dial has a recessed adjustment screw in the center of the dial.
How to adjust the limit or travel on a garage door opener with manual adjustment screws limit adjustment settings regulate the points at which the door will stop when moving up or down.
Place the stepladder under the garage door opener power unit and climb up so that you have a clear view of the back end of the power unit housing.
Press and hold the down arrow button until the garage door reaches your desired down closed.
Use a flathead screw driver to make the adjustments.
Chamberlain group cgi the corporate parent company to liftmaster chamberlain merlin and grifco is a global leader in access solutions and products.
Step 2 find the two dials on the back of the power unit.
We design and engineer residential garage door openers commercial door operators and gate entry systems.
There are two types of adjustable down limit on liftmaster garage openers.