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Brand | Craftsman |
---|---|
Model | 139.53973SRT |
Category | Garage Door Opener |
Language | English |
Step-by-step guide to assembling the rail and installing the trolley mechanism.
Procedure for installing the chain/cable and securing the sprocket cover.
Steps to properly tension the chain for optimal opener operation.
Crucial safety warnings and guidelines before proceeding with installation.
Instructions for finding the correct location for the header bracket.
Steps for securely mounting the header bracket to the garage wall.
Steps for securely mounting the header bracket to the garage ceiling.
Procedure for attaching the opener rail to the header bracket.
How to position the opener for sectional doors with or without tracks.
How to position the opener for one-piece doors without tracks.
Instructions for hanging the opener unit using structural supports.
Critical steps for installing and aligning the safety reversing sensor system.
How to set the upper and lower travel limits for the garage door opener.
How to adjust the force settings for opening and closing the garage door.
How to test the safety reversal system for proper function.
How to test the safety reversing sensor for obstructions and alignment.
Essential safety precautions for operating the garage door opener.