To disassemble the pulleys, loosen and remove the three screws (12), slide of the washer and (15) and remove the pulley (16) from the flange (17).
To reassemble, fit the pulley (16) on the hub (17), aligning the timing mark (G) on the pulley with the timing mark on the (H) on the hub.
Fit the washer (15) against the pulley, aligning the timing notch (I) with the timing marks (G) and (H) on the pulley and the hub respectively.
Insert the three screws (12) in the threaded holes (L) of the hub.