This gear kit on amazon.
Garage door chain sprocket replacement.
Step 1 turn off the power.
Located at the top of the motor unit the gear and sprocket assembly drives the chain that opens and closes the garage door.
This is a video on how to change the gear sprockets in a craftsman garage door opener.
If the gear and sprocket assembly breaks the motor runs but the door won t move.
Https amzn to 2uwvnkj i m working on a chain drive opener.
This diy repair guide explains how to replace the gear and sprocket assembly on a chain drive garage door opener.
If you replace the sprocket assembly in your chain drive garage door opener yourself you may be able to save a lot of money.
Amazon s choice for craftsman garage door sprocket replacement for liftmaster 41c4220a gear and sprocket kit fits chamberlain sears craftsman 1 3 and 1 2 hp chain drive models 4 8 out of 5 stars 1 216.
The process isn t as hard as you may think so consider the guide below.
If yours is a belt drive you need a kit like this https amzn to 2zqns.