How did Sarah remove the back seat?

Lift it up hard at the seat position and it will come down, with a clip on the left and right. When you take it off, you will see a metal disk with screws. After it is removed, there is an oil tank mouth below and a small tank next to it, which is a steam filter. A screwdriver is enough. Usually, the clip is self-tightening. Press the clip on the connector to pull out the steam filter. The same is true during installation. Be sure to insert it in place, and then pull it out to make sure it is firmly inserted.