Toro Diesel Z Master Service Manual page 289

MOWER DECKS
11. Lower the fl oor pan assembly (Fig. 929).
12. Install the negative battery cable to the battery.
13. Lower the seat.
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.
7
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.
7-66
Fig 929 PICT-4011
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).
D
E
C E
Fig 930
A. Belt guide install at
a 45 degree angle
B. Idler spring length
between 10 & 10-1/4"
(25.4 & 26.0cm)
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).
Z580/Z593/Z595 Diesel Service Manual
A
B
fi g. 62 G006478
C. Idler plate
D. Ratchet or breaker bar
E. Idler plate bolt