Toro Z580 DFI Z Master Service Manual page 191

MOWER DECKS
6. Remove the belt guide from the idler arm pulley (Fig.
548).
7. Remove the existing belt (Fig. 549).
7
7-2
Fig 548 PICT-4060a
Fig 549
PICT-4044a
8. Install a new belt around the mower pulleys and the
gearbox pulley under the engine. Refer to the belt
routing decal (Fig. 550).
Fig 550
9. Install the belt guide on the spring loaded idler at a
45 degree angle as shown (Fig. 551):
A
Fig 551
A. 45º
Z580/Z589 DFI Z Master Service Manual
fig. 108-5981
belt guide position_a