See full descriptions for garage door opener compatibility by model numbers.
Garage door chain sprocket replacement.
This gear kit on amazon.
Helical gear and top hat assembly worm gear wear bushings grease and hardware needed to replace the chain drive gears.
Genuine genie replacement belt and chain drive sprockets main drive gears and more.
Remove the outer nut and lock washer from the trolley threaded shaft and pull the threaded shaft out of the trolley.
Slide the outer trolley away from the inner trolley.
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If it is just a gear you are replacing you should remove it after you have unbolted assembly and replace it with a new one by going in reverse order.
Pull the chain off the motor unit sprocket and out of the chain spreader.
Simply remove those for replacement.
Lay the chain on the garage floor while you complete the repair.
This gear and sprocket assembly is compatible with various chain drive garage door openers.