Simplicity ZT4000 Series manual Return-to-Neutral Adjustment, To Adjust

Page 34

Regular Maintenance

Neutral Adjustment

If the tractor “creeps” while the ground speed control levers are locked in NEUTRAL, then it may be necessary to adjust the linkage rod.

NOTE: Perform this adjustment on a hard, level surface such as a concrete floor.

1.Disengage the PTO, engage the parking brake and turn off the engine.

2.The locking nuts (D, Figure 33) are to be used together to turn the rod. Loosen the jam nut that locks against the ball joint (B) and turn the linkage rod (A) to adjust. If the machine creeps forward, turn the rod CLOCKWISE (while standing at the rear of the machine, facing forward), if the machine creeps backward, turn the rod

COUNTER-CLOCKWISE.

3.Lock the jam nut (B) against the ball joint (C) when neutral is achieved.

NOTE: This adjustment should not be performed while the machine is running. It may take several attempts to achieved neutral, depending upon how much the machine creeps.

Return-to-Neutral Adjustment

To determine if it is necessary to adjust the neutral return, perform the following steps.

1.Disengage the PTO, engage the parking brake and turn off the engine.

2.Move the ground speed control levers into the operating position, pull levers rearward and release.

3.Move the ground speed control levers out towards the neutral position. If the levers do not align with the notches in the neutral lock plate, it is necessary to adjust the neutral return rod.

To Adjust:

1.Lock the ground speed control lever in the neutral position.

2.Measure the length of the neutral return spring (C, Figure 34) it should be set at 3.25” (8,23cm). If the spring does not measure 3.25” (8,23cm) loosen the front set collar (D) and the rear set collar (A), then move the front set collar forward or back on the neutral return rod (B) until the spring length equals 3.25” (8,23cm). Retighten the front set collar.

3.Make sure that the neutral return bushing (E) is seated correctly in the spring stop plate (F).

4.Position the rear set collar so that it sets tightly against neutral return bushing and tighten.

5.Pull the ground speed control lever rearward and release to check position again. Adjust as necessary to align the ground speed control levers with the notches in the neutral lock plate.

It is important to note that after every adjustment of the neutral return rod, the lever must be pulled rearward and released to properly check the neutral position.

32

B D

A

Figure 33. Neutral Adjustment (RH side shown)

A.Adjustment Linkage Rod

B.Jam Nut

C.Ball Joint

D.Locking Nuts

 

3.25”

E

 

D

(8.23cm)

 

 

C

F

A

B

Figure 34. Neutral Return Spring Adjustment

A.Rear Set Collar

B.Neutral Return Rod

C.Neutral Return Spring

D.Front Set Collar

E.Neutral Return Bushing

F.Spring Stop Plate

www.simplicitymfg.com

Page 33 Page 35
Image 34
Page 33 Page 35
Contents 26HP Zero-Turn Riders 24HP Zero-Turn Riders Mfg. No Description 5900707Mfg. No Description 5900765 Date Purchased Table of Contents Read the Manual Operating SafetyChildren Thrown Objects Slope OperationMoving Parts Retaining Walls, Drop-offs, and Water Roll Bar UseOverhead Obstacles Fuel and Maintenance Enclosed AreasGeneral Operation Transporting and StorageIgnition System Towed Equipment Ride-On UnitsEmissions Operating on steep slopes can be dangerousService & Maintenance Service and MaintenanceSafe Handling of Gasoline Operational Warnings Roll Bar InstructionsInspection of the Roll Bar Protective Structure Inspection and Maintenance of the Roll Bar Seat Belt Safety Decals Objects HazardSafety Icons Safety Interlock SystemOperational Safety Checks North American Safety IconsCE Identification Tag Markings Identification NumbersCE Models North American ModelsParking Brake PTO Power Take Off SwitchChoke Seat Adjustment Lever Ignition SwitchHour Meter / Maintenance Reminder Throttle ControlGeneral Operating Safety Checks Before StartingPushing the Rider by Hand Seat AdjustmentCheck Tire Pressures OperationFoot Pedal Adjustment Mowing Height AdjustmentTo Adjust Pedal Position Starting the Engine Stopping the RiderSmooth Travel Zero-Turn Driving PracticeForward Travel Practice Executing an End-Of-Row Zero Turn Practice Turning Around a CornerPractice Turning In Place Mowing Recommendations StorageMowing Fire or explosion can cause severe burns or deathMowing Methods Mulching Requires Excellent Mowing Conditions Attaching a TrailerProper Mulching How Much Grass to MulchMaintenance Schedule Check Rider / Mower for loose hardwareChange Oil & Filter Checking / Adding FuelFuel Filter Inspect Muffler and Spark ArresterCheck Hydraulic Oil Level Battery MaintenanceChange Hydraulic Oil Filter Oil LubricationGrease Lubricating the Front CastersServicing The Mower Blades Inspecting the Mower BladesReinstalling the Mower Blades Balancing the Mower Blade NailGround Speed Control Lever Adjustment Speed Balancing AdjustmentReturn-to-Neutral Adjustment Neutral AdjustmentTo Adjust Parking Brake Adjustment Hydraulic Pump Drive Belt ReplacementTo adjust the spring pre-load Rear Suspension AdjustmentSpring loaded components can kick back causing injury Deck Lift Rod Timing And Leveling Adjustment Mower Belt Replacement Mower PTO Belt Idler Arm Stationary Idler PulleyTroubleshooting Troubleshooting the RiderTroubleshooting the Rider Troubleshooting the MowerTroubleshooting Common Cutting Problems StreakingHydroGear PG-3H / HGM-12E HP Briggs & StrattonDeck Indentification Product Quick Specs
Top Page Image Contents