How must be the elastic coupling of VARVEL gearboxes install?

Follow these steps to properly install your Varvel flexible coupling: A - Replace the motor key with the supplied short key (6). B - Fit the spacer (7) and the short key (6) on the motor shaft. C - Fit in screw (3), washer (4), and nut (5) into coupling (1); fit the coupling (1) on the motor shaft until it is in contact with the spacer (7) and tightly fasten the fixing screw (3). D - Slightly grease teeth and tooth spaces of the spider (2). E - Align vertically one tooth of motor coupling with one space of gearbox coupling, close and tighten the motor fixing screws.