Exmark NAV27KC, NAV20KC manual Pre-Start, Operating Instructions

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With a 7/16 wrench, turn both valves one turn counter-clockwise to release drive system. Turn clockwise to reset system. DO NOT overtighten. DO NOT tow machine.

4.2PRE-START

4.2.1Fill fuel tank. For best results use only clean, fresh regular grade unleaded gasoline with an octane rating of 87 or higher. Regular grade leaded gasoline may also be used; however, combustion chamber and cylinder head will require more frequent service. See Engine Owner's Manual.

DO NOT add oil to gasoline.

DO NOT overfill fuel tank. Never fill the fuel tank so that the fuel level rises above a level that is 1/2” below the bottom of the filler neck to allow for fuel expansion and prevent fuel spillage.

4.2.2Make sure you understand the controls, their locations, their functions, and their safety requirements.

4.2.3Refer to Maintenance, Section 5, and perform all the necessary inspection and maintenance steps.

4.3OPERATING INSTRUCTIONS

4.3.1Open fuel shut-off valve:

The fuel shut-off valve is located on the right side of unit in fuel line next to the fuel filter. Raise the hopper to access.

4.3.2Starting Engine:

Brake must be engaged, speed control lever in neutral position and PTO lever “OFF” to start engine. (It is not necessary for the operator to be in the seat to start the engine.)

On a cold engine, place the throttle midway between the “SLOW” and “FAST” positions and push choke lever forward into the “ON” position. Turn ignition switch to the “start” position. Release the switch as soon as the engine starts.

IMPORTANT: DO NOT crank the engine continuously for more then ten (10) seconds at a time. If the engine does not start, allow a 60 second cool- down period between starting attempts. Failure to follow these guidelines can burn out the starter motor.

After starting a cold engine, gradually return choke to the “OFF” position as the engine warms up.

On a warm engine, place the throttle midway between the “SLOW” and “FAST” positions and leave the choke in the “OFF” position.

4.3.3Engaging PTO:

DANGER

POTENTIAL HAZARD

The rotating blades under the mower deck are dangerous.

WHAT CAN HAPPEN

Blade contact can cause serious injury or kill you.

HOW TO AVOID THE HAZARD

DO NOT put hands or feet under the mower or mower deck when the blades are engaged.

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Contents For Serial Nos 510,000 & Higher Potential Hazard Exmark Parts PLUS→ Program Operators Manual Table of Contents Your Safety is Involved SafetySafety Alert Symbol TrainingCarbon monoxide can kill you Potential Hazard Operation Safe Zone for Mowing Maintenance and Storage Potential Hazard Safety Signs HOT Engine SpecificationsFuel System Electrical SystemHydrostatic Ground Drive System Operator ControlsDimensions Assembly InstructionsUncrate Mower Service Battery TiresInstall Drive Wheels Service EngineCheck Tire Pressure Service Hydraulic OIL Operation InstructionsControls Push the lever forward and down to disengage the brake Operating Instructions PRE-STARTPotential Hazard Transporting Disabling Hopper Auto Door OpenHopper Screen Removal Do not drive a unit on a public street or roadway Periodic Maintenance Maintenance & AdjustmentsService Interval Daily Service Interval MonthlyService Interval Daily or more often in dry conditions Service Interval 100 hrs Service Interval 40 hr Lubrication ChartService Interval 40 hrs Service Interval Refer to chartService Interval 160 hrs Service Interval Once YearlyBushing Pivot Locations Service Interval 80 hrsService Interval After First 250 hrs Then yearly thereafter Service Interval As RequiredAdjustments Service Interval 500 hrsPTO Belt Routing Belt Guide Adjustment PTO Belt ReplacementBrake Bolt Adjustment Throttle Tension Speed Control Lever Adjustment Adjust steering leversForward Stop Bolt Adjustment Tracking AdjustmentDrive Pulley Alignment Steering Control Lever Response AdjustmentDoor Closing Hopper Door AdjustmentPTO Brake Spring Adjustment Waste DisposalMotor OIL Disposal Battery Disposal Mercury Switch DisposalMower Pulls Left or Right W/LEVERS Fully Forward Trouble ShootingMower Cuts Unevenly Engine will not StartProblem Engine Troubleshooting TableElectrical Diagram Hydraulic Diagram Year Limited Warranty Page See EXMARK’S Complete Line of Accessories