Simplicity ZT4000 Series Mower Belt Replacement, Mower PTO Belt Idler Arm Stationary Idler Pulley

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Regular Maintenance

Mower Belt Replacement

NOTICE

To avoid damaging belts, do NOT pry belts over pulleys.

1.Park the tractor on a smooth, level surface such as a concrete floor. Disengage the PTO, engage the parking brake, turn off the engine, and remove the ignition key.

WARNING

Spring loaded components can kick back causing injury.

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 in the breaker bar is prematurely release while the spring is under tension.

2.Lower the mower deck to its lowest cutting position and remove the mower deck guards.

3.Using a 1/2” breaker bar, place the square end in the square hole located in the end of the idler arm (A, Figures 42). Carefully rotate the breaker bar clockwise, which will relieve the tension on the belt exerted from the idler arm.

4.Slide the drive belt over the edge of the stationary idler pulley (B). Carefully release the tension on the breaker bar.

5.Remove the old belt and replace with a new one. Make sure the V-side of the belt runs in the pulley grooves (Figure 43).

6.Install the drive belt on the PTO pulley, the spindle pulleys and all idler pulleys except the stationary pulley (B, Figure 43). Carefully rotate the breaker bar clockwise and install the belt on the stationary idler pulley (B). Carefully release the tension on the breaker bar.

7.Reinstall the mower deck guards.

8.Run the mower under no-load condition for about 5 minutes to break-in the new belt.

B

A

Figure 42. Mower PTO Belt

A.Idler Arm

B.Stationary Idler Pulley

D	B	C
A		A
D		A
D
	A

Figure 43. Mower PTO Belt Routing

A.Spindle Pulley

B.PTO Drive Belt

C.Spring-loaded Idler Pulley

D.Stationary Idler Pulley

36	www.simplicitymfg.com

Image 38

Contents Mfg. No Description 5900765 24HP Zero-Turn Riders Mfg. No Description 590070726HP Zero-Turn Riders Date Purchased Table of Contents Children Operating SafetyRead the Manual Moving Parts Slope OperationThrown Objects Overhead Obstacles Roll Bar UseRetaining Walls, Drop-offs, and Water Fuel and Maintenance Enclosed AreasGeneral Operation Transporting and StorageIgnition System Towed Equipment Ride-On UnitsEmissions Operating on steep slopes can be dangerousSafe Handling of Gasoline Service and MaintenanceService & Maintenance Inspection of the Roll Bar Protective Structure Roll Bar InstructionsOperational Warnings 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 ModelsChoke PTO Power Take Off SwitchParking Brake Seat Adjustment Lever Ignition SwitchHour Meter / Maintenance Reminder Throttle ControlGeneral Operating Safety Checks Before StartingPushing the Rider by Hand Seat AdjustmentCheck Tire Pressures OperationTo Adjust Pedal Position Mowing Height AdjustmentFoot Pedal Adjustment Starting the Engine Stopping the RiderForward Travel Practice Zero-Turn Driving PracticeSmooth Travel Practice Turning In Place Practice Turning Around a CornerExecuting an End-Of-Row Zero Turn 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 ArresterChange Hydraulic Oil Filter Battery MaintenanceCheck Hydraulic Oil Level 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 AdjustmentTo Adjust Neutral AdjustmentReturn-to-Neutral Adjustment Parking Brake Adjustment Hydraulic Pump Drive Belt ReplacementSpring loaded components can kick back causing injury Rear Suspension AdjustmentTo adjust the spring pre-load 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 StreakingDeck HP Briggs & StrattonHydroGear PG-3H / HGM-12E Indentification Product Quick Specs