Place the replacement spring in the hole designated of it on the side of the extruder plastic assembly.

Place the M3 x 8mm screw attached to the arm on top of the hole on the top right corner of the assembly base plate .

Very carefully compress the spring and slide the spring over the little extruded piece of plastic on the extruder arm.

When the spring, extruder arm and the M3 x 8mm screw have been aligned use your Phillips #2 screw driver to tighten the M3 x 8mm screw.