Husqvarna YTH150 owner manual Troubleshooting Points, Problem Cause Correction

Page 26

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.	See “To Adjust Carburetor” in Service Adjustments
				section.
	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.	See “To Adjust Carburetor” in Service Adjustments
				section.
	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.	See “To Adjust Carburetor” in Service Adjustments
				section.
	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.

26

Image 26

Contents YTH150 General Operation IV. ServiceSafe Operation Practices for Ride-On Mowers II. Slope OperationModel Number YTH150 Serial Product SpecificationsCustomer Responsibilities Table of Contents Contents of Hardware Pack HOW to SET UP Your Tractor AssemblyTools Required for Assembly To Remove Tractor from CartonTo Attach Nose Roller See Fig Install Seat See FigTo Attach Front Bumper See Fig To Convert to Bagging or Discharging Install Mulcher Plate See FigsAssemble Gauge Wheels to Mower Deck See Fig Check for Proper Position of ALL Belts Check Tire PressureCheck Deck Levelness Check Brake SystemOperation Know Your Tractor HOW to USE Your Tractor To Operate on Hills Before Starting the EngineTo Operate Mower See a To Transport See FigsPurge Transmission ADD GasolineTo Start Engine See Fig Hydrostatic Transmission Warm UPMowing Tips Mulching Mowing TipsGeneral Recommendations Lubrication ChartCustomer Responsibilities Before Each USETractor Engine To Service PRE-CLEANERTo Service Cartridge LubricationMuffler CleaningClean AIR INTAKE/COOLING Areas Spark PlugsTo Level Mower Housing Service and AdjustmentsTo Install Mower See Fig To Remove Mower See FigTo Replace Mower Blade Drive Belt See Fig To Adjust Brake See FigBelt Installation Belt RemovalTo Replace Motion Drive Belt See Fig Transmission REMOVAL/REPLACEMENTTo Adjust Steering Wheel Alignment Front Wheel TOE-IN/CAMBERTo Replace Fuse To Replace Headlight BulbInterlocks and Relays Acceleration Test To Adjust Throttle Control Cable See FigTo Adjust Carburetor See Fig Fuel System StorageOther Engine OILTroubleshooting Points Problem Cause CorrectionOFF Service Notes PTO Switch SchematicIgnition Switch Wiring Insulated ClipsElectrical KEY Part NO. NO. Description Chassis and Enclosures KEY Part Description Repair Parts KEY Part NO. no Description Repair Parts Steering Assembly KEY Part Description NO. noSeat Assembly KEY Part NO. no DescriptionLSB42 DecalsWheels & Tires LBD48Engine KEY Part NO. NO. Description Mower Deck KEY Part Description Mower Lift 25 24KEY Part NO. NO. Description Hydro Gear Transaxle Model Number KEY Part Description Service Notes Service Notes CUT This OUT Dotted Lines SlopeWarranty Statement Limited Warranty532162559 Rev.1 03.11.98 RH/SJ