Rear Suspension Adjustment - Ferris IS700Z Series Operator's Manual

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7. Remove the two (2) 5/16" bolts (D), 5/16" flat washers
(E), and 5/16" nylock flange nuts (F) that secure the
pulley support plate to the hydraulic tank mount plate (G).
Rotate the pulley support plate away from the hydraulic
tank mount so that the belt can be removed from the
machine.
8. Remove the old belt and replace with a new one (H,
Figure 59). Make sure that the V-side of the belt runs in
the grooves of the front stationary idler pulley (I), both
transmission pulleys (J) and the crankshaft pulley (K).
Make sure that the flat side of the belt contacts the faces
of the adjustable idler pulley (L) and the stationary idler
pulley (M).
9. Rotate the pulley support plate (B, Figure 60) back into
position and secure to the hydraulic tank mount plate (G)
using the two (2) 5/16" bolts (D), 5/16" flat washers (E),
and 5/16" nylock flange nuts (F).
10. Re-tighten the 3/8" nylock flange nut (A) that secures
the pulley support plate (B) to the front stationary pulley
stack-up (C).
11. Reinstall the spring anchor eyebolt (F, Figure 59) into the
spring anchor tab and loosely fasten the adjustment nut
(G).
12. Tighten the adjustment nut until the spring (N) achieves a
coil-to-coil measurement (O) of 5-3/4" (14,6 cm).
13. Tighten the jam nut (E).
14. Reinstall the clutch anchor pad (C) to the PTO clutch (D)
and secure using the hardware (B) previously removed.
Reconnect wire harness to the PTO clutch.
15. Reinstall the mower deck drive belt. See Mower Drive
Belt Replacement for instructions.

Rear Suspension Adjustment

The shock assembly can be adjusted in two ways to allow the
operator to customize the ride according to operator's weight
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and/or operating conditions. You have the option of adjusting
the spring pre-load and/or the upper mounting position.
Items to consider before adjusting the suspension.
• Less spring pre-load should be used with light weight
operators, which will provide a softer, more cushioned
ride.
• More spring pre-load or upper mounting position #2
should be used with heavy weight operators, or when a
rear-mount grass bagger system is installed, which will
provide a stiffer, more rigid ride.
To Adjust the Spring Pre-Load:
1. Park machine on a flat, level surface. Disengage the
PTO, stop the engine and engage the parking brake.
2. Raise the rear of the machine and secure with jack
stands. Chock the front wheels to prevent the machine
from rolling.
3. Remove the rear drive tires.
WARNING
Use two hands when adjusting the shock springs. This will
prevent the wrench from slipping while pressure is applied.
4. See Figure 61. Using the supplied spanner wrench (p/n
5022853), insert the tip of the wrench into the notch in the
pre-load adjuster. While holding the wrench in place with
one hand, turn counter-clockwise to increase the pre-
load, turn clockwise to decrease the pre-load. Make sure
both shocks are set to the same amount of pre-load.
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5. Reinstall the rear drive tires. Torque the lug bolts to 85-95
ft/lbs. (115-129 Nm). Remove the jackstands from under
the machine.
NOTE: Spanner wrench is located under the seat on the
right-hand side of the machine.
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