For 41C4220A Chamberlain Craftsman LiftMaster Sears garage door opener gear kit

Description

Includes: Gear and sprocket, worm gear, grease, motor shaft bearings, sprocket bearings
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Programming Links
https://www.youtube.com/results?search_query=liftmaster+gear+install
https://www.youtube.com/watch?v=K-7zCoZPy_s