Assembly also fits chamberlain chain drive garage door opener models 1240r 1245r 1246r 1255r and 1256r.
Garage door opener gear and sprocket assembly part 41c4220a.
The first thing i found is do not tie the lift gate make a few open close with remote and do some preliminary adjustments and then attach lift gate for final.
Check the manual or replacement parts diagram for specific part information before.
Gear and sprocket assembly 41c4220a is an original equipment manufacturer oem part that fits most craftsman 139 series chain drive garage door openers manufactured after 1993.
The oem part was easy to install with instructions.
View the model number on the opener and then go to the opener website and see the part number for the gear and find the comparable part number for the kit and buy yourself the kit.
Chamberlain 41c4220a garage door opener gear and sprocket assembly genuine original equipment manufacturer oem part.
Gear and sprocket assembly 41c4220a is an original equipment manufacturer oem part that fits most craftsman 139 series chain drive garage door openers manufactured after 1993.
Helical gear and top hat assembly worm gear wear bushings grease and hardware needed to replace the chain drive gears.
Assembly also fits chamberlain chain drive garage door opener models 1240r 1245r 1246r 1255r and 1256r.
Make sure the part fits your opener.