Model #13953904D Official Craftsman garage door opener

Here are the diagrams and repair parts for Craftsman 13953904D garage door opener, as well as links to manuals and error code tables, if available.

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Owner’s manual

#12

Installation parts Diagram

Garage door opener safety sensor kit

Part #41A5034

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Motor unit assembly Diagram

Garage door opener motor capacitor

Part #30B532

The manufacturer no longer makes this part, and there's no substitute part

Rail assembly Diagram

Garage door opener u-bracket

Part #12D598-1

The manufacturer no longer makes this part, and there's no substitute part

Rail assembly Diagram

Garage door opener drive belt

Part #41A5250

The manufacturer no longer makes this part, and there's no substitute part

#14

Motor unit assembly Diagram

Garage door opener limit switch

Part #41D3452

The manufacturer no longer makes this part, and there's no substitute part

Rail assembly Diagram

Master link

Part #4A1008

The manufacturer no longer makes this part, and there's no substitute part

#10

Installation parts Diagram

Garage door opener straight door arm

Part #178B34

The manufacturer no longer makes this part, and there's no substitute part

#18A

Motor unit assembly Diagram

Garage door opener wire harness

Part #41C5500

The manufacturer no longer makes this part, and there's no substitute part

#NI03

All parts Diagram

Owner's manual

Part #114A4070

The manufacturer no longer makes this part, and there's no substitute part

Rail assembly Diagram

Garage door opener complete rail assembly

Part #41A5665-2

The manufacturer no longer makes this part, and there's no substitute part

Symptoms common to all garage door openers

Choose a symptom to see related garage door opener repairs.

April 19, 2023

Why is my garage door opener noisy?

By Lyle Weischwill

Main causes: loose fasteners, broken brackets, need preventive maintenance, worn drive gears, loose or worn belt, loose chain

April 19, 2023

Why doesn't my garage door opener work?

By Lyle Weischwill

Main causes: faulty logic control board, bad RPM sensor, broken gears in the drive system, bad drive motor

April 19, 2023

Why does my garage door opener open and close by itself?

By Lyle Weischwill

Main causes: neighbor's remote programmed at the same time as yours, faulty wall control wiring, bad wall control unit

April 19, 2023

Why does my garage door opener work intermittently?

By Lyle Weischwill

Main causes: radio interference, weak remote batteries, sunlight interference with safety sensor beams, safety sensors need adjustment

April 19, 2023

What preventive maintenance does my garage door opener need?

By Lyle Weischwill

Things to do: check garage door travel, tighten brackets and fasteners, test safety sensors, check travel limits and force limits

April 19, 2023

Why does my garage door opener reverse on its own?

By Lyle Weischwill

Main causes: safety sensor beams blocked, safety sensors not aligned, downforce setting needs adjustment, damaged garage door tracks

April 19, 2023

Why won't my garage door opener open the garage door?

By Lyle Weischwill

Main causes: garage door locked, damaged garage door tracks, up-force setting needs adjustment, RPM sensor failure, bad drive motor

April 19, 2023

Why won't my garage door opener fully open or close the garage door?

By Lyle Weischwill

Main causes: garage door opener misaligned, travel limits need adjustment, bad travel limit switches, faulty logic control board

Repair guides common to all garage door openers

These step-by-step repair guides will help you safely fix what’s broken on your garage door opener.

June 1, 2016

How to replace a chain-drive garage door opener gear and sprocket assembly

By Lyle Weischwill

Learn how to replace the gear and sprocket assembly on your garage door opener if the drive motor runs but the door won't move.

Repair difficulty

Time required

60 minutes or less

June 1, 2016

How to replace a garage door opener logic board

By Lyle Weischwill

The logic board is the brains of the garage door opener. If the remote doesn't work or the door doesn't open and close properly, the logic board could be the problem. This repair guide shows you how to fix it yourself.

Repair difficulty

Time required

60 minutes or less

January 6, 2016

How to replace a garage door opener drive chain and cable assembly

By Lyle Weischwill

If your garage door won’t move, the chain and cable assembly on your garage door opener could be broken. Follow these step-by-step instructions to replace it.

Repair difficulty

Time required

60 minutes or less