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Genie
Garage Door Opener

Model # CM8600 Official Genie ac screw drive garage door opener

Here are the diagrams and repair parts for Official Genie CM8600 ac screw drive garage door opener, as well as links to manuals and error code tables, if available.

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  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Owner’s manual
Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 117 parts  |
Garage Door Opener Clevis Pin 5987F04
Garage door opener clevis pin

Part #5987F04

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

Garage Door Opener Screw 28043A04
#22

Head diagram

Garage door opener screw

Part #28043A04

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

Garage Door Opener Header Bracket 35421A
Garage door opener header bracket

Part #35421A

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

Garage Door Opener Wire Harness (gray) 20417R

#NI04

All parts diagram

Garage door opener wire harness (gray)

Part #20417R

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

Garage Door Opener Interrupter Cup 30323A
#14

Head diagram

Garage door opener interrupter cup

Part #30323A

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

Garage Door Opener Nut 24121B05
Garage door opener nut

Part #24121B05

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

Garage Door Opener Ac Transformer 35426A
#16

Head diagram

Garage door opener ac transformer

Part #35426A

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

Clamp 25731A

#NI03

All parts diagram

Clamp

Part #25731A

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

Garage Door Opener Down Limit Wire Harness (brown) 20418R
Garage door opener down limit wire harness (brown)

Part #20418R

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

Strain Relief 25585A

#NI01

All parts diagram

Strain relief

Part #25585A

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

Most common symptoms to help you fix your garage door openers

Choose a symptom to see related garage door opener repairs.

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

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

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

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

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Why does my garage door opener reverse on its own?

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

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What preventive maintenance does my garage door opener need?

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

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Why does my garage door opener work intermittently?

Main causes: radio interference, weak remote batteries, sunlight interference with safety sensor beams, safety sensors n…

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Why doesn't my garage door opener work?

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

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

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

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Why is my garage door opener noisy?

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

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Most common repair guides to help fix your garage door openers

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

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How to replace a garage door opener battery

How to replace a garage door opener battery

The garage door won't move during a power outage if the battery is dead. Here’s how to replace it.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a garage door opener wall control

How to replace a garage door opener wall control

If you push the control button on the wall control and the garage door doesn’t move, the control is defective. Replace i…

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Repair difficulty
Time required
 15 minutes or less
How to replace a chain-drive garage door opener RPM sensor

How to replace a chain-drive garage door opener RPM sensor

Learn how to replace the RPM sensor if the door only moves 6 to 8 inches at a time and the LED light flashes 5 times. …

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Repair difficulty
Time required
 60 minutes or less

Effective articles & videos to help repair your garage door openers

Use the advice and tips in these articles and videos to get the most out of your garage door opener.

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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How to repair broken or damaged wires video

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances.…

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