Exmark 850000 AND HIGHER manual Cleaning the Blower Housing, Fuel System Maintenance

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Maintenance

Figure 24

1.Spark plug and wire location

Checking the Spark Plug

1.Look at the center of the spark plug (Figure 25). If you see light brown or gray on the insulator, the engine is operating properly. A black coating on the insulator usually means the air cleaner is dirty.

Important: Never clean the spark plug. Always replace the spark plug when it has a black coating, worn electrodes, an oily film, or cracks.

2.Check the gap between the center and side electrodes (Figure 25). Bend the side electrode if the gap is not correct.

Figure 25

1. Side electrode

3. Air gap (not to scale)

2.Center electrode insulator

Installing the Spark Plug

1.Install the spark plug. Make sure that the air gap is set correctly.

2.Tighten the spark plug to 15 ft-lb (20 N-m).

3.Push the wire onto the spark plug (Figure 24).

Cleaning the Blower Housing

Service Interval: Every 100 hours/Yearly (whichever comes first) More often under dirty conditions.

To ensure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times.

1.Remove the blower housing and any other cooling shrouds.

2.Clean the cooling fins and external surfaces as necessary.

3.Make sure the cooling shrouds are reinstalled

Important: Operating the engine with a blocked grass screen, dirty or plugged cooling fins, and/or cooling shrouds removed, will cause engine damage due to overheating.

Fuel System Maintenance

Replacing the Fuel Filter

Service Interval: Every 100 hours/Yearly (whichever comes first)

DANGER

In certain conditions, gasoline is extremely flammable and highly explosive. A fire or explosion from gasoline can burn you and others and can damage property.

Perform any fuel related maintenance when the engine is cold. Do this outdoors in an open area. Wipe up any gasoline that spills.

Never smoke when draining gasoline, and stay away from an open flame or where a spark may ignite the gasoline fumes.

Never install a dirty filter if it is removed from the fuel line.

1.Park the machine on a level surface and disengage the blade control switch.

2.Move the motion control levers outward to the neutral position, engage parking brake, stop the engine, remove the key, and wait for all moving parts to stop before leaving the operating position.

3.The fuel filter is in the fuel line between the tank and engine.

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Contents Quest California Introduction Contents General Operation SafetySafety Alert Symbol Safe Operating PracticesTowing ServiceSlope Operation ChildrenGeneral Service Exmark Riding Mower SafetySafety 103-6327 Safety and Instructional Decals109-6035 116-0532 117-2718 PTO Symbols 116-2321 Systems SpecificationsModel Numbers Dimensions Torque Requirements Product OverviewControls OperationRecommended Gasoline Operating InstructionsOperation Gasoline/Alcohol blends Using Stabilizer/ConditionerChecking the Engine Oil Level Starting the EngineDisengaging the Blades Operating the BladesStopping the Engine Engaging the BladesDriving Forward or Backward Safety Interlock SystemUnderstanding the Safety Interlock System Testing the Safety Interlock SystemBackward Adjusting the Height of CutStopping the Machine ForwardChanging the Seat Ride Suspension Adjusting the Anti-Scalp RollersPositioning the Seat Pushing the Machine by Hand Adjusting the Motion Control LeversAdjusting the Height Adjusting the TiltTo Operate the Machine TransportingSide Discharge Transporting a UnitOperating Tips Long Grass When StoppingKeep the Underside of the Mower Clean Blade MaintenanceRecommended Maintenance Schedules MaintenanceGreasing the Bearings Accessing the BatteryRaising the Seat LubricationServicing Paper Element Engine MaintenanceServicing the Air Cleaner Servicing the Engine OilChanging the Oil and Filter Change the Hydraulic System Filter Checking the Hydraulic Oil LevelRemoving the Spark Plug Servicing the Spark PlugChecking the Spark Plug Cleaning the Blower HousingFuel System Maintenance Installing the Spark PlugRemoving the Battery Charging the BatteryElectrical System Maintenance Checking the Battery Charge Do Not jump start a weak battery if these conditions exist Recommended Jump Starting ProcedureServicing the Fuses and Relay Drive System Maintenance Checking the Tire PressureInstalling the Battery Checking for Bent Blades Mower Maintenance Servicing the Cutting BladesInspecting the Blades Before Inspecting or Servicing the BladesSharpening the Blades Removing the BladesReplacing the Mower Belt Mower Belt MaintenanceInstalling the Blades Inspecting the Belts52 Inch Decks Leveling the Mower DeckAdjusting the Blade Slope Replacing the Discharge Deflector Brake Linkage Adjustment Tracking AdjustmentWashing the Underside of the Mower CleaningPlug any holes in mower with bolts and locknuts Storage Cleaning and StorageProblem Possible Cause Corrective Action TroubleshootingTo Pushing the Machine by Hand Diagram SchematicsTerminal a Terminal R Switch Ignition OFF Electrical Logic SchematicExmark Quest Turf Equipment Page Page Service Record Page Page See EXMARK’S Complete Line of Accessories and Options