Exmark NAV27KC, NAV20KC manual Engine Troubleshooting Table, Problem

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ENGINE TROUBLESHOOTING TABLE

	PROBLEM	NO	IMPROPER	DIRT IN	DIRTY AIR	FAULTY	ENGINE	BLOCKED	INCORRECT	DIRTY	INSUFFICIENT
		NO	IMPROPER	DIRT IN	DIRTY AIR	SPARK	ENGINE	FUEL	OIL	AIR	BATTERY
		FUEL	FUEL	FUEL LINE	FILTER	SPARK	OVERLOADED	FUEL	OIL	AIR	BATTERY
						PLUG		FILTER	LEVEL	SCREEN	CHARGE
	Will not start	X		X	X	X	X	X			X
	Hard starting	X	X	X	X	X	X	X
	Stops suddenly	X		X	X		X	X	X	X
	Lacks power		X	X	X	X	X	X	X	X
	Operates erratically		X	X	X	X	X	X		X
	Knocks or pings		X				X			X
	Skips or misfires		X	X	X	X				X
	Backfires			X	X	X	X			X
	Overheats			X	X		X		X	X
	High fuel				X	X	X			X
	High fuel
	consumption

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Contents For Serial Nos 510,000 & Higher Potential Hazard Exmark Parts PLUS→ Program Operators Manual Table of Contents Training SafetyYour Safety is Involved Safety Alert SymbolCarbon monoxide can kill you Potential Hazard Operation Safe Zone for Mowing Maintenance and Storage Potential Hazard Safety Signs HOT Electrical System SpecificationsEngine Fuel SystemHydrostatic Ground Drive System Operator ControlsTires Assembly InstructionsDimensions Uncrate Mower Service BatteryService Engine Install Drive WheelsCheck Tire Pressure Operation Instructions Service Hydraulic OILControls Push the lever forward and down to disengage the brake Operating Instructions PRE-STARTPotential Hazard Disabling Hopper Auto Door Open TransportingHopper Screen Removal Do not drive a unit on a public street or roadway Service Interval Monthly Maintenance & AdjustmentsPeriodic Maintenance Service Interval DailyService Interval Daily or more often in dry conditions Service Interval 100 hrs Service Interval Refer to chart Lubrication ChartService Interval 40 hr Service Interval 40 hrsService Interval 160 hrs Service Interval Once YearlyBushing Pivot Locations Service Interval 80 hrsService Interval After First 250 hrs Then yearly thereafter Service Interval As RequiredService Interval 500 hrs AdjustmentsPTO 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 AdjustmentWaste Disposal PTO Brake Spring AdjustmentMotor OIL Disposal Battery Disposal Mercury Switch DisposalEngine will not Start Trouble ShootingMower Pulls Left or Right W/LEVERS Fully Forward Mower Cuts UnevenlyProblem Engine Troubleshooting TableElectrical Diagram Hydraulic Diagram Year Limited Warranty Page See EXMARK’S Complete Line of Accessories