After adjusting derailleur steps cargo electric bicycles

1 the lowest possible gear shift bicycle (the largest rear gear sprocket closest to the spokes on the box).
2 in the rear gear (sprocket), and make sure they do not touch the transmission gear / wheel when the top (on wheels),electric trike bikes the lowest gear. It is very obvious, because it causes a very loud noise, was riding cargo electric bicycles in this round. Note: The arrow points to the side of the derailleur pulleys. If the cargo trikes is in contact with the cassette, and rotate the screw derailleur ("b" of the gap adjusting screw screw or chain) to increase in a clockwise direction until the at least a couple of millimeters (tenth of a gear from the cassette separation of tension ") of gear, if too far away tape, loosen the screws until they contact, then tighten until they just remove a few millimeters.
3 in the lower cable tension feeling. If there is tension, loosen the cable adjuster (red arrow indicates) clockwise until there is no tension. It is very important to prepare for the next step.