Exmark 4500-352 manual Troubleshooting

Page 35
Troubleshooting

Troubleshooting

Troubleshooting

Important: It is essential that all operator safety mechanisms be connected and in proper operating condition prior to mower use.

When a problem occurs, do not overlook the simple causes. For example: starting problems could be caused by an empty fuel tank.

The following table lists some of the common causes of trouble. Do Not attempt to service or replace major items or any items that call for special timing of adjustments procedures (such as valves, governor, etc.). Have this work done by your Engine Service Dealer.

Note: When disconnecting electrical connectors Do Not pull on the wires to separate the connectors.

Problem

 

Possible Cause

 

Corrective Action

 

 

 

 

 

Engine will not start, starts hard, or fails to

1.

Fuel tank is empty.

1.

Fill the fuel tank.

keep running.

2.

Fuel shutoff valve is closed.

2.

Open the fuel shutoff valve.

 

 

3.

The throttle and choke are not in the

3.

Be sure the throttle control is midway

 

 

correct position.

 

between the “SLOW” and “FAST”

 

 

 

 

positions, and the choke is in the “ON”

 

 

 

 

position for a cold engine or the “OFF”

 

 

 

 

position for a warm engine.

 

4.

Dirt in fuel filter.

4.

Replace the fuel filter.

 

5.

Dirt, water, or stale fuel is in the fuel

5.

Contact an Authorized Service Dealer.

 

 

system.

 

 

 

6.

Air cleaner is dirty.

6.

Clean or replace the air cleaner element.

 

7.

Electrical connections are corroded, loose

7.

Check the electrical connections for

 

 

or faulty.

 

good contact. Clean connector terminals

 

 

 

 

thoroughly with electrical contact cleaner,

 

 

 

 

apply dielectric grease and reconnect.

 

8.

Relay or switch is defective.

8.

Contact an Authorized Service Dealer.

 

9.

Faulty spark plug.

9.

Clean, adjust or replace spark plug.

 

10.

Spark plug wire is not connected.

10.

Check the spark plug wire connection.

 

11.

PTO is engaged.

11.

Disengage the PTO.

 

12.

Transmission is not in true neutral

12.

Ensure the shifter lever is in the neutral

 

 

position.

 

position.

 

13.

OPC levers are released.

13.

Depress OPC levers.

 

 

 

 

 

Engine loses power.

1.

Engine load is excessive.

1.

Reduce the ground speed.

 

2.

Air cleaner is dirty.

2.

Clean or replace the air cleaner element.

 

3.

Oil level in the crankcase is low.

3.

Add oil to the crankcase.

 

4.

Cooling fins and air passages for the

4.

Remove the obstructions from the cooling

 

 

engine are plugged.

 

fins and air passages.

 

5.

Vent hole in the fuel cap is plugged.

5.

Clean or replace the fuel cap.

 

6.

Dirt in fuel filter.

6.

Replace the fuel filter.

 

7.

Dirt, water, or stale fuel is in the fuel

7.

Contact an Authorized Service Dealer.

 

 

system.

 

 

 

 

 

 

 

Engine overheats.

1.

Engine load is excessive.

1.

Reduce the ground speed.

 

2.

Oil level in the crankcase is low.

2.

Add oil to the crankcase.

 

 

 

 

 

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Contents For Serial Nos 790,000 & Higher METROCALIFORNIA Proposition 65 Warning Model No Serial No IntroductionContents ALERT! YOUR SAFETY IS INVOLVED SafetySafety Alert Symbol SafetyKeep away from eyes and skin Never siphon by mouth DANGERAvoid prolonged breathing of vapors Keep face away from nozzle and gas tank/container openingRemove accumulated debris from muffler and engine area OperationSlope Operation Allow engine parts, especially the muffler, to cool before touchingDo Not mow near drop-offs or near water Maintenance and StorageDo Not mow slopes when grass is wet Mow across slopes, never up and downSafety and Instructional Decals ECS Units Only Pistol Grip Units Only 48 inch Units OnlyModel Numbers SpecificationsSpecifications Safety Interlock SystemCutting Deck DimensionsCurb Weight Torque RequirementsOperation Product OverviewOperation ControlsChoke Control “Off-Run” SwitchDrive Levers Neutral Lock/Park Brake LatchesStarting the Engine Pre-StartOperating Instructions Open the Fuel Shut-Off ValveFor ECS Handles Driving the MachineDrive Lever/Neutral Lock/Park Brake Latch Operation For Pistol Grip HandlesTransporting a Unit If necessary, use assistance when loadingTransporting Changing GearsMaintenance MaintenanceRecommended Maintenance Schedules Check Engine Oil Level Periodic MaintenanceService Interval Before each use or daily Service Interval As requiredService Interval After the first 5 hours Check Safety Interlock SystemService Pre-Cleaner Element and Air Cleaner SERVICE DEALERCheck Condition Of Belts Service Interval Every 40 hoursNote See chart for service intervals Check Tire PressuresYearly-Replace gearbox grease Service Interval Every 160 hoursCheck Spark Plugs Change Fuel FilterMobil HTS Grease Or Food-Grade Anti-seize AdjustmentsAdjusting the Cutting Height Thread Locking AdhesivesHeight CuttingAxle Number Of SpacersAdjusting the Axle Position 3. Place the drive levers in the “park brake” position Adjusting the Number of Spacers below Caster Support HubAdjusting the Cutting Height with Blade Spacers Transmission Belt Adjustment48 inch Deck Shown for Reference Only Wheel Drive Belt Pulley ScrapersEngine to Mower Deck Belt Belt Guide Adjustment Blade Brake AdjustmentBrake and Wheel Drive Linkage Adjustment Right Side of Unit Shown Shifter Lever AdjustmentHandle Height Adjustment Shifter Detent AdjustmentPTO Safety Switch Adjustment More traction applied as Wheel Drive Spring Tension AdjustmentUpper Handle Upper HoleRemove Engine Shrouds and Clean Cooling Fins CleaningClean Engine and Exhaust System Area Clean Debris From MachineTroubleshooting TroubleshootingCutting blades is/are bent or unbalanced Schematics SchematicsOwner’s Responsibilities Exmark Commercial Turf Equipment2 Year Limited Warranty Instructions for Obtaining Warranty ServicePage WALK-BEHIND ACCESSORIES AND OPTIONS SEE EXMARK’S COMPLETE LINE OF ACCESSORIES AND OPTIONSMID-MOUNT RIDING ACCESSORIES AND OPTIONS OUT-FRONT RIDING ACCESSORIES AND OPTIONS