Garage Door Opener

Model # CM8500S Official Genie garage door opener

Here are the diagrams and repair parts for Official Genie CM8500S garage door opener, as well as links to manuals and error code tables, if available.

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Browse Parts for
CM8500S Garage Door Opener
Carriage 36179R
Carriage

Part #36179R

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

Garage Door Opener Ac Transformer 35426A
#120

Head diagram

Garage door opener ac transformer

Part #35426A

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

Limit Switch 20113R
Limit switch

Part #20113R

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

Stop 35372A
#175

Rail - cm7500s, cm8500s, pro98s, pro90s diagram

Stop

Part #35372A

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

Garage Door Opener Bolt 080105.0506
Garage door opener bolt

Part #080105.0506

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

Cord Plug 24567R
#133

Head diagram

Cord plug

Part #24567R

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

Garage Door Opener Screw 24501D04
Garage door opener screw

Part #24501D04

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

Screw 24940A30
#128

Head diagram

Screw

Part #24940A30

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

Battery, 9-volt 9333A
#1

Miscellaneous accessories diagram

Battery, 9-volt

Part #9333A

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

Strain Relief 25585A
#130

Head 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.

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

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

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

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

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

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

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

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

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.

How to replace a chain-drive garage door opener motor

How to replace a chain-drive garage door opener motor

Get your garage door moving again by replacing a defective motor in your garage door opener.…

Repair difficulty
Time required
 60 minutes or less
How to replace a belt-drive garage door opener motor

How to replace a belt-drive garage door opener motor

The garage door won't move if the motor is defective. Here’s how to fix it.…

Repair difficulty
Time required
 60 minutes or less
How to replace a garage door opener drive chain and cable assembly

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

If your garage door won’t move, the chain and cable assembly on your garage door opener could be broken. Follow these st…

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.

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.…

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.…

How to open a garage door with an opener manually

How to open a garage door with an opener manually

Learn how to open a garage door manually if power to your garage door opener fails.…