There are four screws and a wrench inside the box 

Place four holes at the bottom of the lever and insert the four screws one after another, tighten them

After the installation is completed

There are U-buckle, hose, drain valve, water outlet inside the box

Insert drain valve into water tank and tighten the nut

  Fasten the U-buckle to the lever  

Install the U-buckle above water tank, can be use to store the wires

Install water outlet below the water tank

Connect the hose to the water tank outlet and the motor base