Husqvarna LTH140 owner manual Troubleshooting Points, Problem Cause Correction

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TROUBLESHOOTING POINTS

PROBLEM	CAUSE		CORRECTION

Will not start	1.	Out of fuel.	1.	Fill fuel tank.
	2.	Engine not “CHOKED” properly.	2.	See “TO START ENGINE” in Operation section.
	3.	Engine flooded.	3.	Wait several minutes before attempting to start.
	4.	Bad spark plug.	4.	Replace spark plug.
	5.	Dirty air filter.	5.	Clean/replace air filter.
	6.	Dirty fuel filter.	6.	Replace fuel filter.
	7.	Water in fuel.	7.	Drain fuel tank and carburetor, refill tank with fresh
				gasoline and replace fuel filter.
	8.	Loose or damaged wiring.	8.	Check all wiring.
	9.	Carburetor out of adjustment.	9.	Contact an authorized service center/department.
	10.	Engine valves out of adjustment.	10.	Contact an authorized service center/department.

Hard to start	1.	Dirty air filter.	1.	Clean/replace air filter.
	2.	Bad spark plug.	2.	Replace spark plug.
	3.	Weak or dead battery.	3.	Recharge or replace battery.
	4.	Dirty fuel filter.	4.	Replace fuel filter.
	5.	Stale or dirty fuel.	5.	Drain fuel tank and refill with fresh gasoline.
	6.	Loose or damaged wiring.	6.	Check all wiring.
	7.	Carburetor out of adjustment.	7.	Contact an authorized service center/department.
	8.	Engine valves out of adjustment.	8.	Contact an authorized service center/department.

Engine will not turn over	1.	Clutch/brake pedal not depressed.	1.	Depress clutch/brake pedal.
	2.	Attachment clutch is engaged.	2.	Disengage attachment clutch.
	3.	Weak or dead battery.	3.	Recharge or replace battery.
	4.	Blown fuse.	4.	Replace fuse.
	5.	Corroded battery terminals.	5.	Clean battery terminals.
	6.	Loose or damaged wiring.	6.	Check all wiring.
	7.	Faulty ignition switch.	7.	Check/replace ignition switch.
	8.	Faulty solenoid or starter.	8.	Check/replace solenoid or starter.
	9.	Faulty operator presence switch(es).	9.	Contact an authorized service center/department.

Engine clicks but will not	1.	Weak or dead battery.	1.	Recharge or replace battery.
start	2.	Corroded battery terminals.	2.	Clean battery terminals.
	3.	Loose or damaged wiring.	3.	Check all wiring.
	4.	Faulty solenoid or starter.	4.	Check/replace solenoid or starter.

Loss of power	1.	Cutting too much grass/too fast.	1.	Set in “Higher Cut” position/reduce speed.
	2.	Throttle in “CHOKE” position.	2.	Adjust throttle control.
	3.	Build-up of grass, leaves and trash under mower.	3.	Clean underside of mower housing.
	4.	Dirty air filter.	4.	Clean/replace air filter.
	5.	Low oil level/dirty oil.	5.	Check oil level/change oil.
	6.	Faulty spark plug.	6.	Clean and regap or change spark plug.
	7.	Dirty fuel filter.	7.	Replace fuel filter.
	8.	Stale or dirty fuel.	8.	Drain fuel tank and refill with fresh gasoline.
	9.	Water in fuel.	9.	Drain fuel tank and carburetor, refill tank with fresh
				gasoline and replace fuel filter.
	10.	Spark plug wire loose.	10.	Connect and tighten spark plug wire.
	11.	Dirty engine air screen/fins.	11.	Clean engine air screen/fins.
	12.	Dirty/clogged muffler.	12.	Clean/replace muffler.
	13.	Loose or damaged wiring.	13.	Check all wiring.
	14.	Carburetor out of adjustment.	14.	Contact an authorized service center/department.
	15.	Engine valves out of adjustment.	15.	Contact an authorized service center/department.

Excessive vibration	1.	Worn, bent or loose blade.	1.	Replace blade. Tighten blade bolt.
	2.	Bent blade mandrel.	2.	Replace blade mandrel.
	3.	Loose/damaged part(s).	3.	Tighten loose part(s). Replace damaged parts.

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Contents LT H 1 4 Safe Operation Practices for Ride-On Mowers Safety RulesProduct Specifications Customer ResponsibilitiesModel Number LTH140 Serial Table of Contents Contents of Hardware Pack Before Rolling Tractor OFF Skid AssemblyTools Required for Assembly To Remove Tractor from CartonCheck for Proper Position of ALL Belts HOW to SET UP Your TractorCheck Tire Pressure Check Deck LevelnessTo Attach Front Bumper See Fig Install Battery See FigsTo Convert to Bagging or Discharging Assemble Gauge Wheels to Mower Deck See FigKnow Your Tractor OperationHOW to USE Your Tractor Before Starting the Engine To Operate on HillsADD Gasoline Mowing Tips To Start Engine See FigPurge Transmission General Recommendations Lubrication ChartService Dates Customer ResponsibilitiesBlade Care TractorBrake Operation TiresTransaxle Cooling Battery See FigTo Clean Battery and Terminals BeltsLubrication To Service PRE-CLEANERTo Service Cartridge EngineSpark Plugs CleaningClean AIR INTAKE/COOLING Areas MufflerService and Adjustments To Install Mower See FigTo Remove Mower See Fig FRONT-TO-BACK Adjustment See Figs To Level Mower HousingTo Replace Mower Blade Drive Belt See Fig To Adjust Attachment Clutch See FigTo Adjust Brake See Fig Belt InstallationTo Adjust Motion Control Lever See Fig Transmission REMOVAL/REPLACEMENTTo Replace Motion Drive Belt See Fig To Remove Wheel for Repairs See Fig To Adjust Steering Wheel AlignmentTo Start Engine with a Weak Battery See Fig Front Wheel TOE-IN/CAMBERTo Replace Headlight Bulb To Remove Hood and Grill Assembly See FigTo Adjust Throttle Control Cable See Fig To Replace FuseAcceleration Test To Adjust Carburetor See FigPreliminary Setting Final SettingOther StorageProblem Cause Correction Troubleshooting PointsOFF 14 HP 42 Tractor Model NO. LTH140 954001192A SchematicElectrical KEY Part NO. NO. Description Chassis and Enclosures KEY Part NO. no Description Drive KEY Part Description Engine 532132753 Control Th/ch Steering Assembly Repair Parts 14 HP 42 Tractor Model NO. LTH140 H954001192A Seat AssemblyDecals LBD48LSB42 Mower KEY Part NO. no Description Mower Lift Assembly Repair Parts HYDRO-GEAR Transaxle Model no Repair Parts Service Notes Service Notes Sighting Guide Suggested Guide for Sighting Slopes for Safe OperationLimited Warranty Warranty Statement