Transmission Drive Belt Replacement - Ferris IS700Z series Operator's Manual

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WARNING
Use extreme caution when rotating the idler arm with the
breaker bar, due to the increased tension in the spring as the
idler arm is being rotated. Injury may result if the breaker bar
is prematurely released while the spring is under tension.
3. Using a 1/2" breaker bar, place the square end in one of
the eight sided holes (B) (whichever is more convenient to
reach) and rotate the idler arm (C) clockwise, which will
relieve the tension on the belt exerted from the idler arm.
4. Slide the drive belt over the edge of the rear stationary
pulley (D). Carefully release the tension on the breaker bar.
5. Remove the old belt and replace with a new one. Make sure
that the V-side of the belt runs in the pulley grooves.
6. Install the drive belt on the PTO pulley, the spindle pulleys
(E), the front stationary idler pulley(s) (F), and the adjustable
idler pulley (G), expect the rear stationary pulley.
7. Carefully rotate the breaker bar clockwise and install the
belt on the rear stationary idler pulley.
8. Carefully release the tension on the breaker bar.
Check the Mower Belt Idler Tensioner Spring
Length
1. Set the mower deck to the 3-1/2" (8.9 cm) cutting height.
2. Use the Mower Belt Idler Tensioner Spring Length chart to
determine the correct spring length for your unit.
Mower Belt Idler Tensioner Spring Length
Deck Size
52"
61"
3. Measure the coil length (A, Figure 57) of the mower belt
idler tensioner spring (B). The measurement should equal
the measurement as indicated in the chart. If not, perform
the Adjust the Mower Belt Idler Tensioner Spring Length .
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Adjust the Mower Belt Idler Tensioner Spring
Length
1. Loosen the jam nut (C, Figure 57) on the eye bolt (D).
2. Turn the adjustment nut (E) until the measurement as
indicated in the chart is achieved.
3. Re-tighten the jam nut.
4. Re-install the mower deck guards and floor pan.
5. Run the mower under no-load condition for about five (5)
minutes to break in the new belt.

Transmission Drive Belt Replacement

Figure 58 depicts the transmission drive belt setup as seen from
the top side of the unit and the arrow (A, Figure 58) indicates
the front of the unit.
Measurement
12" (30.5 cm)
12" (30.5 cm)
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