Adjusting The Mower Belt Tension - Toro Z Master Professional 7000 Series Operator's Manual

1. Mower belt
2. Mower spindle pulley
3. Spring-loaded idler pulley
4. Belt guide at a 45 degree
angle
9. Install the belt guide on the spring-loaded idler
at a 45 degree angle as shown in
Figure 74. Torque the bolt to 37 to 45 N∙m (27
to 33 ft-lb).
10. Install the idler spring to the 2 posts
and Figure 74).
11. For 72-inch mowers, adjust the belt tension,
refer to Belt Maintenance (page
12. Install the belt covers by sliding the cover into
the tab, install the bolts, and close the latches
(Figure 73).
Figure 72
5. Gearbox pulley
6. Idler spring
7. Idler plate (for 72-inch
mowers only)
Figure 72
(Figure 72
56).
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1. Belt cover
2. Latch
Adjusting the Mower Belt
Tension
For 72-inch Mowers Only
and
Service Interval: After the first 8 hours
Important:
To ensure proper mower belt tension,
which will result in a longer belt life, check the
mower belt tension after the 8 hours and every 8
hours, thereafter.
1. Park the machine on a level surface, disengage
the blade-control switch, and engage the parking
brake.
2. Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3. Adjust the mower deck to the 76 mm (3 inches)
height-of-cut position.
4. Measure the spring length
spring length is between 25.4 to 26 cm (10 to
10-1/4 inches), from post to post, no adjustment
is needed.
5. Loosen the bolts holding the idler plate
74).
6. Insert a ratchet or breaker bar into the square
hole in the idler plate to adjust the tension
(Figure 74).
7. Rotate the ratchet or breaker bar to move the
idler plate until the idler spring is between 25.4
to 26.0 cm (10 to 10-1/4 inches) from post to
post as shown in
57
Figure 73
3. Insert slot into the tab
(Figure 74). If the
Figure 74.
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(Figure