YTH20K46 Owner's Manual / 96045000407 / 2008-07
SAFETY RULES Safe Operation Practices for Ride-On Mowers DANGER: THIS CUTTING MACHINE IS CAPABLE OF AMPUTATING HANDS AND FEET AND THROWING OBJECTS. FAILURE TO OBSERVE THE FOLLOWING SAFETY INSTRUCTIONS COULD RESULT IN SERIOUS INJURY OR DEATH. • WARNING: In order to prevent accidental starting when setting up, transporting, adjusting or making repairs, always disconnect spark plug wire and place wire where it cannot contact spark plug.
SAFETY RULES Safe Operation Practices for Ride-On Mowers III. CHILDREN GENERAL SERVICE • Never operate machine in a closed area. • Keep all nuts and bolts tight to be sure the equipment is in safe working condition. • Never tamper with safety devices. Check their proper operation regularly. • Keep machine free of grass, leaves, or other debris build-up. Clean oil or fuel spillage and remove any fuelsoaked debris. Allow machine to cool before storing.
PRODUCT SPECIFICATIONS Gasoline Capacity and type: Oil Type (API-SG-SL): Oil Capacity: Spark Plug: Ground Speed (MPH): Charging System: Battery: Blade Bolt Torque: CONGRATULATIONS on your purchase of a new tractor. It has been designed, engineered and manufactured to give you the best possible dependability and performance.
UNASSEMBLED PARTS Slope Sheet Key (1) Oil Drain Tube (2) Keys ASSEMBLY Your new tractor has been assembled at the factory with the exception of those parts left unassembled for shipping purposes. When right or left hand is mentioned in this manual, it means when you are in the operating position (seated behind the steering wheel). ADJUST SEAT (See Fig. 2) • • TO REMOVE TRACTOR FROM CARTON • UNPACK CARTON • • • Sit in seat.
ASSEMBLY ✓CHECKLIST BEFORE YOU OPERATE YOUR NEW TRACTOR, WE WISH TO ASSURE THAT YOU RECEIVE THE BEST PERFORMANCE AND SATISFACTION FROM THIS QUALITY PRODUCT. PLEASE REVIEW THE FOLLOWING CHECKLIST: CHECK TIRE PRESSURE The tires on your tractor were overinflated at the factory for shipping purposes. Correct tire pressure is important for best cutting performance. • Reduce tire pressure to PSI shown on tires. ✓ ✓ ✓ ✓ ✓ CHECK DECK LEVELNESS For best cutting results, mower housing should be properly leveled.
OPERATION These symbols may appear on your tractor or in literature supplied with the product. Learn and understand their meaning.
OPERATION KNOW YOUR TRACTOR READ THIS OWNER'S MANUAL AND SAFETY RULES BEFORE OPERATING YOUR TRACTOR Compare the illustrations with your tractor to familiarize yourself with the locations of various controls and adjustments. Save this manual for future reference. P H D G E B F C K A J M L FIG. 3 Our tractors conform to the applicable safety standards of the American National Standards Institute.
OPERATION The operation of any tractor can result in foreign objects thrown into the eyes, which can result in severe eye damage. Always wear safety glasses or eye shields while operating your tractor or performing any adjustments or repairs. We recommend standard safety glasses or a wide vision safety mask worn over spectacles. HOW TO USE YOUR TRACTOR GROUND DRIVE • To stop ground drive, depress brake pedal into full “BRAKE” position. TO SET PARKING BRAKE (See Fig.
OPERATION The cutting height range is approximately 1" to 4". The heights are measured from the ground to the blade tip with the engine not running. These heights are approximate and may vary depending upon soil conditions, height of grass and types of grass being mowed. • The average lawn should be cut to approximately 2-1/2 inches during the cool season and to over 3 inches during hot months. For healthier and better looking lawns, mow often and after moderate growth.
OPERATION TO OPERATE MOWER (See Fig. 9) • • • Your tractor is equipped with an operator presence sensing switch. Any attempt by the operator to leave the seat with the engine running and the attachment clutch engaged will shut off the engine. You must remain fully and centrally positioned in the seat to prevent the engine from hesitating or cutting off when operating your equipment on rough, rolling terrain or hills. 1. Select desired height of cut with attachment lift lever. 2.
OPERATION TO START ENGINE (See Fig. 3) SERVICE REMINDER/HOUR METER 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 engaged position. • Sit on seat in operating position, depress brake pedal and set parking brake. • Move attachment clutch to “DISENGAGED” position. • Move throttle control to choke position.
OPERATION MOWING TIPS PURGE TRANSMISSION • CAUTION: Never engage or disengage freewheel lever while the engine is running. • • To ensure proper operation and performance, it is recommended 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 developed during shipping of your tractor.
MAINTENANCE MAINTENANCE SCHEDULE BEFORE EACH USE EVERY 8 HOURS EVERY 25 HOURS EVERY 50 HOURS EVERY 100 HOURS EVERY SEASON BEFORE STORAGE Check Brake Operation Check Tire Pressure T Check Operator Presence & ROS Systems R A Check for Loose Fasteners C Check/Replace Mower Blades T Lubrication Chart 0 Check Battery Level R Clean Battery and Terminals 3 4 Check Transaxle Cooling Check Mower Levelness Check V-Belts Check Engine Oil Level Change Engine Oil (with oil filter) 1,2 Change Engine Oil (wi
MAINTENANCE TRACTOR BLADE CARE For best results mower blades must be kept sharp. Replace bent or damaged blades. Always observe safety rules when per form ing any maintenance. CAUTION: Use only a replacement blade approved by the manufacturer of your tractor. Using a blade not approved by the manufacturer of your tractor is hazardous, could damage your tractor and void your warranty.
MAINTENANCE V-BELTS TO CHANGE ENGINE OIL (See Figs. 15A & 15B) Check V-belts for deterioration and wear after 100 hours of operation and replace if necessary. The belts are not adjustable. Replace belts if they begin to slip from wear. Determine temperature range expected before oil change. All oil must meet API service classification SG-SL. • Be sure tractor is on level surface. • Oil will drain more freely when warm. • Catch oil in a suitable container. • Remove oil fill cap/dipstick.
MAINTENANCE CLEAN AIR INTAKE/COOLING AREAS IN-LINE FUEL FILTER (See Fig. 16) To insure proper cooling, make sure the grass screen, cooling fins, and other external surfaces of the engine are kept clean at all times. Every 100 hours of operation (more often under extremely dusty, dirty conditions), remove the blower housing and other cooling shrouds. Clean the cooling fins and external surfaces as necessary. Make sure the cooling shrouds are reinstalled.
SERVICE AND ADJUSTMENTS WARNING: TO AVOID SERIOUS INJURY, BEFORE PERFORMING ANY SERVICE OR ADJUSTMENTS: • Depress brake pedal fully and set parking brake. • Place attachment clutch in “DISENGAGED” position. • Turn ignition key to “STOP” and remove key. • Make sure the blades and all moving parts have completely stopped. • Disconnect spark plug wire from spark plug and place wire where it cannot come in contact with plug. TO REMOVE MOWER (See Fig.
SERVICE AND ADJUSTMENTS • • • ATTACH MOWER SIDE SUSPENSION ARMS (A) TO CHASSIS - Position hole in arm over pin (B) on outside of tractor chassis and secure with retainer spring. Repeat on opposite side of tractor. Insert end of link (E) into hole in front mower bracket and secure with washer and retainer spring (J). E A J F H B FIG. 20 Hook end of clutch cable spring (Q) into hole in idler arm (R).
SERVICE AND ADJUSTMENTS TO LEVEL MOWER • If adjustment is necessary, see steps in Visual Adjustment instructions above. • Recheck measurements, adjust if necessary until both sides are equal. FRONT-TO-BACK ADJUSTMENT (See Figs. 25A and 25B) IMPORTANT: Deck must be level side-to-side. To obtain the best cutting results, the mower blades should be adjusted so the front tip is 1/8" to 1/2" lower than the rear tip when the mower is in its highest position.
SERVICE AND ADJUSTMENTS TO REPLACE MOWER BLADE DRIVE BELT (See Fig. 26) TO REPLACE MOTION DRIVE BELT (See Fig. 27) The mower blade drive belt may be replaced without tools. Park the tractor on level surface. Engage parking brake. Park the tractor on level surface. Engage parking brake. For assistance, there is a belt installation guide decal on bottom side of left footrest. BELT REMOVAL • Remove mower from tractor (See “TO REMOVE MOWER” in this section of manual).
SERVICE AND ADJUSTMENTS TO ADJUST STEERING WHEEL ALIGNMENT TO START ENGINE WITH A WEAK BATTERY (See Fig. 29) If steering wheel crossbars are not horizontal (left to right) when wheels are positioned straight forward, remove steering wheel and reassemble per instructions in the Assembly section of this manual. WARNING: Lead-acid batteries generate explosive gases. Keep sparks, flame and smoking materials away from batteries. Always wear eye protection when around batteries.
SERVICE AND ADJUSTMENTS REPLACING BATTERY (See Fig. 30) TO REMOVE HOOD AND GRILL ASSEMBLY (See Fig. 31) WARNING: Do not short battery terminals by allowing a wrench or any other object to contact both terminals at the same time. Before connecting battery, remove metal bracelets, wristwatch bands, rings, etc. Positive terminal must be connected first to prevent sparking from accidental grounding. • • • • • • • • • • Raise hood. Unsnap headlight wire connector. Stand in front of tractor.
STORAGE Immediately prepare your tractor for storage at the end of the season or if the tractor will not be used for 30 days or more. ENGINE FUEL SYSTEM IMPORTANT: IT IS IMPORTANT TO PREVENT GUM DEPOSITS FROM FORMING IN ESSENTIAL FUEL SYSTEM PARTS SUCH AS CARBURETOR, FUEL FILTER, FUEL HOSE, OR TANK DURING STORAGE. ALSO, 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.
TROUBLESHOOTING POINTS PROBLEM CAUSE CORRECTION Will not start 1. 2. 3. 4. 5. 6. 7. 8. 1. 2. 3. 4. 5. 6. 7. 8. Out of fuel. Engine not “CHOKED” properly. Engine flooded. Bad spark plug. Weak or dead battery. Dirty air filter. Dirty fuel filter. Water in fuel. 9. 10. Loose or damaged wiring. Carburetor out of adjustment. 9. 10. 11. Engine valves out of adjustment. 11. Fill fuel tank. See “TO START ENGINE” in Operation section. Wait several minutes before attempting to start. Replace spark plug.
TROUBLESHOOTING POINTS PROBLEM Engine dies when tractor is shifted into reverse CAUSE 1. CORRECTION Reverse operation system (ROS) is not "ON" while mower or other attachment is engaged. 1. Turn ignition key to ROS "ON" position. See Operation section. Engine continues to run when operator leaves seat with attachment clutch engaged 1. Faulty operator-safety presence control system. 1. Check wiring, switches and connections. If not corrected, contact an authorized service center/ department.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 SCHEMATIC SCH10 BATTERY RED SOLENOID STARTER M RED A FUSE AMMETER (OPTIONAL) BLACK WHITE WHITE S M B A1 G L A2 ATTACHMENT CLUTCH (CLUTCH OFF) BLACK CLUTCH/BRAKE (PEDAL UP) GRAY REVERSE SWITCH (NOT IN REVERSE) BLACK BLACK BLACK 2 BLACK 3 BLACK BLACK BLACK BLACK 1 6 SEAT SWITCH (NOT OCCUPIED) GRAY BLACK /WHITE JUNCTION CONNECTOR SHORTING CONNECTOR CHASSIS HARNESS SPARK PLUGS GAP (2 PLUGS ON TWIN CYL.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 ELECTRICAL KEY NO. 1 2 8 16 21 22 25 26 27 28 29 30 33 34 40 41 42 43 46 55 71 79 87 90 141 PART NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 CHASSIS KEY NO. PART NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 DRIVE KEY NO. PART NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 ENGINE KEY NO. 1 2 9 12 15 18 20 21 28 29 37 42 45 69 81 82 85 87 90 92 94 95 96 97 PART NO. DESCRIPTION -----Engine Kohler Model No. SV620 532 18 86-55 Muffler 532 19 43-19 Keeper Belt Engine 532 40 51-40 Pulley Engine 532 40 74-89 Tank Fuel 532 19 77-25 Cap Asm 532 40 15-08 Control Throttle 532 41 63-58 Screw # 10 x 0.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 STEERING ASSEMBLY KEY NO. 1 2 4 5 6 7 8 9 13 14 15 16 19 21 22 26 28 35 45 51 53 57 58 59 60 61 62 63 64 66 67 68 69 70 PART NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 DECALS 2 7 5 6 2 8 9 3 1 12 KEY NO. 1 2 3 5 6 7 8 PART NO. KEY NO. DESCRIPTION 532 41 91-38 532 41 68-38 532 41 01-08 532 18 09-41 532 41 54-99 532 40 44-84 532 19 15-54 9 12 ---- Decal, Fender Warning Decal, Hood Decal, Hood Panel SD Decal, Customer Respons. Decal, Replacement Decal, Steering Wheel Decal, Fender WHEELS AND TIRES KEY NO. 1 2 3 4 5 6 7 8 9 10 11 --- 1 2 11 3 4 7 10 5 6 9 8 PART NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 SEAT ASSEMBLY 1 8 8 8 7 7 8 41 40 10 21 6 37 6 37 2 44 43 21 3 seat-tex_6.5SL_3 KEY NO. 1 2 3 6 7 8 10 21 PART NO. 532 40 66-21 532 18 01-66 532 14 06-75 873 80 06-00 532 12 41-81 532 17 18-77 532 19 69-77 532 17 18-52 KEY NO. DESCRIPTION 37 40 41 43 44 Seat Bracket Pivot Fender Strap, Asm Fender Nut, Lock W/Ins. 3/8-16 unc Spring, Seat Cprsn Bolt 5/16-18 uncx 3/4 w/Sems Pan, Seat Bolt, Shoulder 5/16-18 PART NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 MOWER DECK KEY PART NO. NO.
TRACTOR - - MODEL NUMBER YTH20K46 (96045000407), PRODUCT NO. 960 45 00-04 MOWER LIFT 7 87 87 90 98 89 3 10 97 100 2 91 88 97 91 lift-tex_6 KEY NO. 2 3 7 10 87 88 89 90 PART NO. 532 19 52-23 532 19 52-31 532 41 15-55 532 19 63-14 532 19 42-09 532 41 07-10 819 19 19-12 532 19 42-08 KEY NO. DESCRIPTION Shaft Asm., Lift Lever Asm., Lift RH Grip, Lever Spring Torsion Pin Cotter 7/16 Bow Tie Lock Spring Lift Assist Washer Clear Zinc Pin Cotter 5/16 Bow Tie Lock 91 97 98 100 PART NO.
HUSQVARNA PRODUCT REGISTRATION INFORMATION & WARRANTY STATEMENT All Husqvarna products can be registered online at www.usa.husqvarna.com quickly and easily regardless of their model year. Click the Support tab, then click on the Online Product Registration link, and fill out the electronic form and submit.
† Refer to Section 3 for items not covered by this warranty *All consumer product use must have been limited to the owner s residence. Warranted for noncommercial, nonprofessional, noninstitutional and nonincome producing use.
532 42 20-52 07.30.08 AP Printed in the U.S.A.
