Toro Z580 DFI Z Master Service Manual page 247

MOWER DECKS
12. Remove the nut, washer and bolt securing the pulley
to the adjustment plate (Fig. 755).
13. Remove the pulley from the idler bushing (Fig. 756).
7
7-58
Fig 755 6670a
Fig 756 6671a
14. Remove the idler bushing (Fig. 757).
Fig 757
Z580/Z589 DFI Z Master Service Manual
6672a