Toro Diesel Z Master - Page 289

MOWER DECKS
7-66 Z580/Z593/Z595 Diesel Service Manual
7
72” Mower Deck Belt Tension
Adjustment
Important: To ensure proper mower belt tension,
which will result in a longer belt life, check the
mower belt tension after the fi rst 8 hours of use
and 8 hours after each belt change.
1. Disengage the PTO, move the motion control levers
to the neutral locked position, and set the parking
brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Place the mower deck in the 3” (76mm) height-of-cut
position.
4. Measure the mower deck idler spring length (Fig.
000). If the spring length is between 10” and 10-1/4”
(25.4 and 26.0cm), from post to post, no adjustment
is needed.
If it is not between 10” and 10-1/4” (25.4 and
26.0cm), continue:
5. Loosen the bolts holding the idler plate (Fig. 930).
6. Insert a ratchet or breaker bar into the square hole in
the idler plate (Fig. 930).
7. Rotate the ratchet or breaker bar to move the idler
plate until the idler spring is between 10” and 10-1/4”
(25.4 and 26.0cm) from post to post (Fig. 930).
8. While holding the belt tension and spring length,
tighten the idler plate bolts to secure the idler plate
(Fig. 930).
Fig 930 fi g. 62 G006478
A. Belt guide install at C. Idler plate
a 45 degree angle D. Ratchet or breaker bar
B. Idler spring length E. Idler plate bolt
between 10 & 10-1/4”
(25.4 & 26.0cm)
B
C
E
E
D
A
11. Lower the fl oor pan assembly (Fig. 929).
Fig 929 PICT-4011
12. Install the negative battery cable to the battery.
13. Lower the seat.