Part fits very well; However, replacement instructions are not included. I called Dyson and the customer service rep told me to lift the canister into the holes (4am and 8am). He didn't know if there was a special tool or not and said he could send me to a service center if I didn't want to risk breaking something. I managed to slip a small flathead screwdriver under the holes that freed the original canister. After that, the exchange was successful. I don't know why they can't attach a small piece of paper with instructions!