IS3100Z Series - 4 Wheel IS - 61” & 72” Mower Deck
22
WARNING
Use two hands when adjusting the shock springs.
This will prevent the wrench from slipping while
pressure is being applied.
Suspension
Adjustment
The shock assembly can be adjusted to vary the amount
of pre-load applied to the springs. This allows the
operator to maintain the ride height.
Use less pre-load for light weight operators. Use more
pre-load for heavy weight operators. Adjust the rear
suspension height if additional weight (ie. grass collector)
is being added to the frame.
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. See Figure 41. 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 with both hands, turn CLOCKWISE to
decrease the pre-load, turn COUNTER-CLOCKWISE
to increase the pre-load. Make sure that for each
pair of shocks that the left-hand and right-hand are
set to the same amount of pre-load.
Figure 41. Suspension Adjustment
A. Pre-load Adjuster
B. Shock Mounting Bolt
C. Top Jam Nut
D. Bottom Jam Nut
E. Adjuster Bolt
NOTE: Spanner wrench is located under the seat.
Rear tires must be removed to adjust the rear
suspension.
To adjust the rear suspension height:
1. Loosen the shock mounting bolt (B).
2. Loosen the top jam nut (C).
3. While holding the bottom jam nut (D) with a wrench,
turn the adjuster bolt (E) CLOCKWISE to raise the
rear suspension or COUNTER-CLOCKWISE to
lower the rear suspension.
4. Tighten the top jam nut (C).
5. Tighten the shock mounting bolt (B).
6. Repeat for other side.
NOTE: Both sides must be adjusted evenly to prevent
the rider frame from tilting to one side.
E
A
A
D
C
B
