Liftmaster/Chamberlain- Sears/Craftsman 41a4885-2 Genuine Replacement Part Gear . Craftsman Garage Door Opener Gear Shaft Spindle fits 41C4220A or . Sears Craftsman Garage Door Opener Replacement White Main Gear 81B0045 2 Pack. . Liftmaster 41c4220a Gear and Sprocket Kit for Chamberlain, Sears, . 41C4220A Spindle shaft with drive sprocket (grease not included) For 1/2 hp and 1/3 hp Chain Drive Liftmaster, Chamberlain, Sears, Craftsman garage door . Buy 41A2817 Liftmaster Garage Door Opener Drive Gear fits 41C4220A Kit and Sears Craftsman replacement for 1/2 hp and 1/3 hp chain drive at Walmart.com. How to Replace a Chain-Drive Garage Door Opener Drive and Worm Gears a pleasant surprise to be able to replace parts on a twenty year old garage door . Jan 28, 2018 - edit2: another fun shot of the interior of this thing. Our local garage door shop keeps lots of the replacement gear kits in stock for 9. Mar 17, 2006 - Instructions to Replace Drive Gear on Garage Door Opener . Yes, I only had to remove the lower roll pin, and funny that the roll pins that I . Jan 16, 2011 - Craftsman Garage Door Opener Drive/worm gear replacement . My drive gear is shot on my Craftsman 139.53615SR - 1/2HP garage door opener. GARAGE CONVERSIONSBehind a Garage Door, a Family Fun Room.