Husqvarna YTH150 owner manual ADD Gasoline, To Start Engine See Fig, Purge Transmission

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OPERATION

•For cold weather operation you should change oil for easier starting (See “OIL VISCOSITY CHART” in the Customer Responsibilities section of this manual).

•To change engine oil, see the Customer Responsibili- ties section in this manual.

ADD GASOLINE

•Fill fuel tank. Use fresh, clean, regular unleaded gasoline with a minimum of 87 octane. (Use of leaded gasoline will increase carbon and lead oxide deposits and reduce valve life). Do not mix oil with gasoline. Purchase fuel in quantities that can be used within 30 days to assure fuel freshness.

IMPORTANT: WHEN OPERATING IN TEMPERATURES BELOW 32° F(0°C), USE FRESH, CLEAN WINTER GRADE GASOLINE TO HELP INSURE GOOD COLD WEATHER STARTING.

WARNING: Experience indicates that alcohol blended fuels (called gasohol or using ethanol or methanol) can attract moisture which leads to separation and formation of acids during storage. Acidic gas can damage the fuel system of an engine while in storage. To avoid engine problems, the fuel system should be emptied before stor- age of 30 days or longer. Drain the gas tank, start the engine and let it run until the fuel lines and carburetor are empty. Use fresh fuel next season. See Storage Instruc- tions for additional information. Never use engine or carburetor cleaner products in the fuel tank or permanent damage may occur.

CAUTION: Fill to bottom of gas tank filler neck. Do not overfill. Wipe off any spilled oil or fuel. Do not store, spill or use gasoline near an open flame.

TO START ENGINE (See Fig. 10)

When starting the engine for the first time or if the engine has run out of fuel, it will take extra cranking time to move fuel from the tank to the engine.

•Be sure freewheel control is in the transmission en- gaged position.

•Sit on seat in operating position, depress clutch/brake pedal and set parking brake.

•Place motion control lever in neutral (N) position.

•Move attachment clutch to “DISENGAGED” position.

•Move throttle control to choke position.

Note: Before starting, read the warm and cold starting procedures below.

•Insert key into ignition and turn key clockwise to “START” position and release key as soon as engine starts. Do not run starter continuously for more than fifteen sec- onds per minute. If the engine does not start after several attempts, move throttle control to fast position, wait a few minutes and try again. If engine still does not start, move the throttle control back to the choke position and retry.

WARM WEATHER STARTING (50° F and above)

•When engine starts, move the throttle control to the fast position.

•The attachments and ground drive can now be used. If the engine does not accept the load, restart the engine and allow it to warm up for one minute using the choke as described above.

COLD WEATHER STARTING ( 50° F and below)

•When engine starts, allow engine to run with the throttle control in the choke position until the engine runs roughly, then move throttle control to fast position. This may require an engine warm-up period from several seconds to several minutes, depending on the tem- perature.

HYDROSTATIC TRANSMISSION WARM UP

•Before driving the unit in cold weather, the transmis- sion should be warmed up as follows:

•Be sure the tractor is on level ground.

•Place the motion control lever in neutral. Release the parking brake and let the clutch/brake slowly return to operating position.

•Allow one minute for transmission to warm up. This can be done during the engine warm up period.

•The attachments can also be used during the engine warm-up period after the transmission has been warmed up.

NOTE: If at a high altitude (above 3000 feet) or in cold temperatures (below 32 F) the carburetor fuel mixture may need to be adjusted for best engine performance. See “TO ADJUST CARBURETOR” in the Service and Adjustments section of this manual.

PURGE TRANSMISSION

CAUTION: Never engage or disengage freewheel lever while the engine is run- ning.

To ensure proper operation and performance, it is recom- mended that the transmission be purged before operating tractor for the first time. This procedure will remove any trapped air inside the transmission which may have devel- oped during shipping of your tractor.

IMPORTANT: SHOULD YOUR TRANSMISSION REQUIRE REMOVAL FOR SERVICE OR REPLACEMENT, IT SHOULD BE PURGED AFTER REINSTALLATION BEFORE OPERATING THE TRACTOR.

•Place tractor safely on level surface with engine off and parking brake set.

•Disengage transmission by placing freewheel control in freewheeling position (See “TO TRANSPORT” in this section of manual).

•Sitting in the tractor seat, start engine. After the engine is running, move throttle control to slow position. With motion control lever in neutral (N) position, slowly disengage clutch/brake pedal.

•Move motion control lever to full forward position and hold for five (5) seconds. Move lever to full reverse position and hold for five (5) seconds. Repeat this procedure three (3) times.

NOTE: During this procedure there will be no movement of drive wheels. The air is being removed from hydraulic drive system.

•Move motion control lever to neutral (N) position. Shut- off engine and set parking brake.

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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
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