Review on Upgrade Your Ecovacs Deebot With Bettawell'S Front Wheel Caster Assembly Replacement Kit by Gillian Francis

There are no instructions.It does not pop in until you remove the old part.

1) remove the ring on the deebot 78 2)Slide facing off carefully 3)remove old shank and plastic key from hole 4) Put the new wheel in from top and hold it in place while replacing the white cotter key that in in the bag with the wheel.