Traduciendo paso 14
Get Idler, two nylon washers and one M3x40mm screw.
Insert screw through Carriage and E-cage B until tip pokes through. Hang a nylon washer on the screw tip. Place Idler as presented and push screw through most of the way. Slide second washer between Idler and E-cage F and push screw through to nut.
Tighten screw finger tight only