Ferris Industries 5900625, 5901170, 5900629 Suspension Adjustment, To adjust the spring pre-load

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Troubleshooting, Adjustment & Service

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.

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 34. 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.

NOTE: Spanner wrench is located under the seat. Rear tires must be removed to adjust the rear suspension.

NOTE: It is recommended that the rear suspension be adjusted stiffer due to the added weight of the collection system.

SUSPENSION ADJUSTMENT

To adjust the upper mounting position:

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 jackstands. The jackstands must under the bumper. Chock the front wheels to prevent the machine from rolling.

3.Position the jack under the cross member that ties the suspension arms together and slowly raise the rear suspension to relieve the pressure on the upper shock mounting bolts.

NOTE: This will require small adjustments to the jack’s position. The shock should move freely on the mounting bolt when the pressure is relieved.

4.Remove the upper shock mounting hardware and pivot the shock to the position #2 (see Figure 34). Adjust the jack to align the shock mounts to the shocks.

5.Reinstall the upper shock mounting hardware and tighten securely.

6.Remove the jack from under the suspension cross member.

7.Remove the jackstands from under the machine.

WARNING

Use two hands when adjusting the shock springs. This will prevent the wrench from slipping while pressure is being applied.

FRONT		REAR
	POSITION #1	POSITION #2
	(FACTORY SET)	POSITION #2
	(FACTORY SET)
Troubleshooting

Figure 34. Suspension Adjustment

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Contents Description Model NumberFerris Industries Date Purchased Table of Contents Operating Safety Slope Operation Roll Bar Use Fuel and Maintenance Operation TrainingPreparation Children Slope OperationTowed Equipment RIDE-ON Units EmissionsService and Maintenance Maintenance and StorageSafe Handling of Gasoline Roll BAR Instructions Operational WarningsInspection and Maintenance of the Roll BAR Seat Belt Identification Numbers IdentificationSafety Decals Safety DecalsSafety Interlock System North American Safety IconsOperational Safety Checks AIR Cooled Models only Seat Adjustment LeverIgnition Switch Control FunctionsParking Brake PTO Power Take Off SwitchHour Meter / Maintenance Reminder Throttle ControlLiquid Cooled Models only Water Temperature Gauge General Operating Safety Checks Before StartingNever allow passengers to ride on the unit Starting the Engine Stopping the RiderPushing the Rider by Hand Forward Travel Practice Zero Turn Driving PracticeSmooth Travel Reverse Travel PracticeExecuting Turns Practice Turning Around a Corner Practice Turning In PlaceExecuting an End-Of-Row Zero Turn TurningHeight of Grass MowingMowing Recommendations Tall Grass Requires Incremental CuttingMowing Patterns When and How Often to MowMowing Methods Proper Broadcast MowingAttaching a Trailer Proper MulchingTo raise the roll bar Raise & Lower the Roll BARTo lower the roll bar Keep roll bar in the raised position and use seat beltTemporary Storage 30 Days Or Less StorageStarting After Long Term Storage Long Term Storage Longer Than 30 DaysEngine Maintenance Safety ItemsRider Maintenance Before Every Spring Each 100 250 Fall Use HoursFuel Filter Check Tire PressuresChecking / Adding Fuel Change OIL & FilterAir Cooled Models Check Hydraulic OIL LevelChange Hydraulic OIL Filter Liquid Cooled ModelsChange Engine Coolant Clean Radiator & Screen Check Engine Coolant LevelPressurized System Oil LubricationGrease PivotsBattery Maintenance Cleaning the Battery and Cables Air Cooled ModelsCleaning the Battery and Cables Liquid Cooled Models Servicing the Mower Blades Removing the BladeTroubleshooting Warning Troubleshooting the RiderTroubleshooting the Mower Rider TroubleshootingTroubleshooting Common Cutting Problems StreakingSeat Adjustment Ground Speed Control Lever AdjustmentSpeed Balancing Adjustment Adjustment Linkage Rod Neutral AdjustmentRETURN-TO-NEUTRAL Adjustment RH side shownParking Brake Adjustment Parking Brake Adjustment Brake Spring Adjustment NutSuspension Adjustment To adjust the spring pre-loadTo adjust the upper mounting position Mowing Height Adjustment Foot Pedal AdjustmentTo adjust pedal position Deck Lift ROD Timing Adjustment Inner RodOuter Rod Deck Leveling Adjustment Deck Lift Spring4 Locations Hydraulic Pump Drive Belt Replacement Mower Belt Replacement DeckCharging a Completely Discharged Battery Battery ServiceChecking Battery Voltage Jump Starting With Auxiliary Booster BatteryThis HOOK-UP for Negative Ground Vehicles Make Certain Vehicles do not TouchJump Starting Chassis DimensionsEngine TransmissionsFerris Limited Warranty Belts and Blades TractorMower Deck