You'll Need Tools

During assembly, installation and adjustment of the opener, instructions will call for hand tools shown below.

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WARNING

An unbalanced garage door might not reverse

when required and someone under the door could be seriously injured or killed.

If your garage door binds, sticks or is out of

balance, call for professional garage door service. Garage doors, door springs, cables, pulleys, brackets and their hardware are under extreme tension and can cause serious injury or death. Do not try to loosen, move or adjust them yourself!

Ropes left on a garage door could cause someone to become entangled and killed.

Remove all ropes connected to the door before installing and operating the opener.

Identify the type and height of your door and any special conditions that exist and any additional materials that may be required by referring to the lists on page 4 or page 5.

To avoid damage to the garage door and

opener, disable locks before installing and operating the opener. Use a wood screw or nail to hold locks in the "open" (unlocked) position.

Operation at other than 120V 60 Hz will cause opener malfunction and damage.

Before you begin, complete the following test to make sure your door is balanced, and is not sticking or binding:

•Lift the door about halfway as shown• Release the door. It should stay in place, supported entirely by its springs.

•Raise and lower the door to see if there is any binding or sticking.

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Craftsman 139.53664SRT2 owner manual Youll Need Tools
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139.53664SRT2 specifications

The Craftsman 139.53664SRT2 is a highly regarded garage door opener that combines reliability, advanced technology, and user-friendly features. Designed for residential use, this model stands out due to its robust functionality and ease of installation, making it a popular choice among homeowners.

One of the standout features of the Craftsman 139.53664SRT2 is its powerful motor. It boasts a 1/2 horsepower motor capable of lifting standard residential garage doors with ease. This strength means reliable performance even in adverse weather conditions, ensuring that your door operates smoothly and efficiently each time.

Another key technology in this model is the Smart Control system. The Craftsman 139.53664SRT2 allows users to operate their garage door remotely, thanks to its built-in Wi-Fi connectivity. By connecting to a smartphone app, homeowners can monitor and control their garage door from anywhere, providing added convenience and security. This feature also enables users to receive alerts and notifications, ensuring they are always informed about the status of their garage door.

Security is a top priority for the Craftsman brand, and the 139.53664SRT2 features advanced security measures, including rolling code technology. This technology generates a new access code each time the remote is used, effectively preventing unauthorized access and ensuring that your garage remains secure.

The installation of the Craftsman 139.53664SRT2 is straightforward, thanks to its user-friendly design and comprehensive instructions. Many users appreciate that it can be installed as a DIY project, saving on installation costs while providing the satisfaction of completing the task themselves. The system is compatible with most existing garage door systems, making it versatile for different setups.

In terms of noise level, the Craftsman 139.53664SRT2 operates quietly, allowing for a smooth opening and closing process without disturbing the household. This feature is particularly beneficial for those with living spaces above the garage.

Overall, the Craftsman 139.53664SRT2 is a dependable garage door opener that integrates modern technology, ensuring safety, convenience, and ease of use. Its powerful motor, Wi-Fi capability, and enhanced security features make it a valuable addition to any home.
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