Review on 🔧 Liftmaster 41c4220a Gear and Sprocket Kit: Perfect Replacement for Craftsman & Chamberlain Chain Drive Models by Andrew Frison

Great seller and product! My photo is a broken one from an old 1/2 HP craft knife. Received quickly and it took about 2.5 hours the day I received it because my opener didn't have room on the opener so I had to take everything off. Pretty basic but messy lol. But part was an exact match! It's nice and quiet now! It used to make a clicking noise and I noticed a bent gear at the top. A few tips: 1- The big caterpillar actually rotates downwards, which I didn't understand at first. Just in case, I had to undo the latch next to the garage door that this hinge was attached to. Initially, my door wouldn't close all the way and ended up clapping when I opened it. I watched a few YouTube videos and figured out what to do with those limit screws, so I opened the lid and I could see a strip of metal that should make contact with some kind of circuitry as it opens and closes and should adjust accordingly. Otherwise, just blindly turn those screws randomly! It helped that I had a second knife that was exactly the same, I opened it up and saw what happened.