Gasoline containing up to 10% ethanol (E10) is acceptable for use in this machine.The use of any gasoline exceeding 10% ethanol (E10) will void the product warranty. Operator Manual RZ4221 BF / 967176101 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
In order to implement improvements, specifications and designs can be altered without prior notification. Note that no legal demands can be placed based on the information contained in these instructions. Use only original parts for repairs. The use of other parts voids the warranty. Do not modify or install non-standard equipment to the unit without consent from the manufacturer. Modifications to the unit may cause unsafe operations or damage the unit.
CONTENTS INTRODUCTION................................................................ 5 General........................................................................ 5 Driving and Transport on Public Roads....................... 5 Towing......................................................................... 5 Operating..................................................................... 5 Good Service............................................................... 6 Manufacturing Number..................
WARNING! Failure to follow cautious operating practices can result in serious injury to the operator or other persons. The owner must understand these instructions, and must allow only trained persons who understand these instructions to operate the mower. Each person operating the mower must be of sound mind and body and must not be under the influence of any mind altering substance.
INTRODUCTION Congratulations Thank you for purchasing a Husqvarna ride-on mower. This machine is built for superior efficiency to rapidly mow primarily large areas. A control panel easily accessible to the operator and a hydrostatic transmission regulated by steering controls both contribute to the machine’s performance. This manual is a valuable document. Read the contents carefully before using or servicing the machine. The following of instructions (use, service, maintenance, etc.
INTRODUCTION Good Service Husqvarna’s products are sold all over the world and only in specialized retail stores with complete service.. This ensures that you as a customer receive only the best support and service. Before the product is delivered, the machine has, for example, been This Operator’s Manual belongs to the machine with the manufacturing number: Manufacturing Number The machine’s manufacturing number can be found on the printed plate affixed to the left in the engine compartment.
SYMBOLS AND DECALS These symbols are found on the machine and in the operator’s manual. Study them carefully so that you know what they mean. WARNING! IMPORTANT INFORMATION Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx xxxxxxxxx. xx xxxxxxxx xxxx xxxxxx. Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx xxxxxxxxx. xx xxxxxxxx xxxx xxxxxx. Used in this publication to notify the reader of a risk of personal injury or death, particularly if the reader should neglect to follow instructions given in the manual.
SYMBOLS AND DECALS Read Operator’s Manual Whole body exposure to thrown objects Shut off engine and remove key before performing any maintenance or repair work Severing of fingers and toes Keep a safe distance from the machine Do not open or remove safety shields while engine is running Use on slopes no greater than 10° No passengers Careful backing up, watch for other people Careful going forward, watch for other people Battery acid is corrosive, explosive and flammable Moving sharp blades unde
SAFETY Safety Instructions These instructions are for your safety. Read them carefully. WARNING! WARNING! 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. This symbol means that important safety instructions need to be emphasized. It concerns your safety. General Operation • Read, understand, and follow all instructions on the machine and in the manual before starting.
SAFETY • • • • • • • • • • • • 10 Disengage blades when not mowing. Shut off engine and wait for all parts to come to a complete stop before cleaning the machine, removing the grass catcher, or unclogging the discharge guard. Operate machine only in daylight or good artificial light. Do not operate the machine while under the influence of alcohol or drugs. Watch for traffic when operating near or crossing roadways. Use extra care when loading or unloading the machine into a trailer or truck.
SAFETY Personal Safety Equipment WARNING! When using the machine, approved personal protective equipment (shown in illustrations) shall be used. Personal protective equipment cannot eliminate the risk of injury but it will reduce the degree of injury if an accident does happen. Ask your retailer for help in choosing the right equipment. • • • • • • • Make sure that you have first aid equipment close at hand when using the machine. Never use the machine when barefoot.
SAFETY • • • Do not use on steep slopes. Do not try to stabilize the machine by putting a foot on the ground. Do not mow near drop-offs, ditches, or embankments. The machine could suddenly roll over if a wheel is over the edge or if the edge caves in. Children Tragic accidents can occur if the operator is not alert to the presence of children. Children are often attracted to the machine and the mowing activity. Never assume that children will remain out of the path of danger.
SAFETY Safe Handling of Gasoline WARNING! The engine and the exhaust system become very hot during operation. There is risk for burns if touched. Allow engine and exhaust system to cool before refueling. To avoid personal injury or property damage, use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. • Extinguish all cigarettes, cigars, pipes, and other sources of ignition. • Use only approved gasoline container.
SAFETY General Maintenance • • • • • • • • • • • • • • • • • 14 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 buildup. Clean oil or fuel spillage and remove any fuel-soaked debris. Allow machine to cool before storing. If the machine strikes a foreign object, stop and inspect the machine.
SAFETY Sparking can occur when working with the battery and the heavy cables of the starter circuit. This can cause battery explosion, fire or eye injury. Sparking in this circuit can not occur after the chassis cable (normally negative, black) is removed from the battery. WARNING! Avoid electrical sparking and its consequences by the following routines: • • • • • • • • • • • • • • • Use protective goggles.
SAFETY Transport • • • • • • • The machine is heavy and can cause serious crushing injuries. Be extra cautious when it is loaded on or unloaded from a vehicle or trailer. Use an approved trailer to transport the machine. Activate the parking brake, turn off the fuel supply, and fasten the machine with approved fastening devices, such as bands, chains, or straps, when transporting. Do not operate this machine on public roadways.
CONTROLS This operator’s manual describes the Husqvarna Zero Turn Rider. The rider is fitted with a four-stroke overhead valve engine. Transmission from the engine is made via belt-driven hydraulic pumps. Using the left and right steering controls, the flow is regulated and thereby the direction and speed. Control Locations 1 2 3 4 8058-094 5 6 1. 2. 3. 4. 5. 7 Cutting height handle Park brake Choke/throttle control Ignition switch Motion control levers 6. 7. 8. 9.
CONTROLS Steering Control Levers The machine’s speed and direction are continuously variable using the two steering controls. The steering controls can be moved forward or backward about a neutral position. Furthermore, there is a neutral position, which is locked if the steering controls are moved outward. When both controls are in the neutral position (N), the machine stands still.
CONTROLS Parking Brake The parking brake is found on the right side of the machine. Pull the lever backward to activate the brake and forward to release it. IMPORTANT INFORMATION The machine must stand absolutely still when applying the parking brake. Always set the parking brake before dismounting. Release the parking brake before moving the mower. 8050-005 Parking brake not activated Throttle Control The throttle control regulates the engine speed and thereby the rate of rotation of the blades.
CONTROLS Choke Control The choke control is used for cold starts in order to provide the engine with a richer fuel mixture. For cold starts the throttle knob should be pushed forward all of the way. WARNING! Gasoline is highly flammable. Observe caution and fill the tank outdoors (see Safety). 8050-007 Choke control Refueling Read the safety instructions before refueling. The machine has one fuel tank, just behind the seat. The tank volume is 3 gallons (11.4 liters).
CONTROLS Fuel Shut Off Valve The fuel shut off valve is located in the fuel line under the seat. Tilt seat forward for access. The fuel valve is ON when the valve is parallel to the fuel line. Rotate the valve ¼ turn clockwise to turn fuel OFF. IMPORTANT INFORMATION In order to obtain an even cutting height, it is important that the air pressure is 15 psi in all tires. 8050-010 Fuel shut off valve in the OPEN position.
CONTROLS Blade Control Lever To engage the mower blades, slowly lift the lever up and into the lock notch. WARNING! No adjustments or maintenance to be carried out unless: • the engine stopped • the ignition key removed • the parking brake activated 8058-074 Mower deck blade control lever in the disengaged position Bypass Linkages When pushing or pulling the mower, be sure to engage the EZT Hydrogear bypass linkages.
OPERATION Read the Safety section and following pages, if you are unfamiliar with the machine. Training Due to unique steering capabilities, zero turn mowers are far more maneuverable than typical riding mowers. This section should be reviewed in its entirety prior to attempting to move the mower under its own power. When first operating the mower or until becoming comfortable with controls, use a reduced throttle speed and reduced ground speed.
OPERATION Before Starting • Read the sections Safety Instructions and Controls before starting the machine. • Perform the daily maintenance before starting (see Maintenance Schedule in the Maintenance section). • Check that there is sufficient fuel in the fuel tank. • Adjust the seat to the desired position. The following conditions must be fulfilled before the engine can be started: • The driver must be seated on the seat.
OPERATION 5. Move the steering controls outward to the locked (outer) neutral position. 8050-028 Place controls in neutral position 6. Move the throttle to the middle position. 8050-008 Set the throttle 7. If the engine is cold, the choke control should be pushed forward to its extent.
OPERATION 8. Open the fuel valve. 8050-010 Open the fuel valve 9. Press in and turn the ignition key to the start position. 8050-135 Turn to START position 10. When the engine starts, immediately release the ignition key back to the run position. IMPORTANT INFORMATION Do not run the starter for more than 5 seconds each time. If the engine does not start, wait approximately 10 seconds before retrying.
OPERATION Slowly slide the choke control back to the middle position when the engine has started. Set the desired engine speed with the throttle. Allow the engine to run at a moderate speed, approximately mid throttle, for 3-5 minutes before loading it too heavily. USE FULL THROTTLE WHEN MOWING (no choke). WARNING! Engine exhaust and certain vehicle components contain or emit chemicals considered to cause cancer, birth defects, or other reproductive system damage.
OPERATION Running 1. Release the parking brake by moving the lever downward. NOTE: The mower is equipped with an operator presence system. When the engine is running, any attempt by the operator to leave the seat without first setting the parking brake will shut off the engine. 2. Move the steering controls to the neutral position (N). 8050-005 Parking brake not activated 3. Select the cutting height by placing the lever into the desired notch.
OPERATION Operating on Hills Read the Safety Instructions Driving on Slopes in the Safety Instructions. WARNING! Do not drive up or down hills with slopes greater than 10 degrees. Do not drive across slopes. • • • • • • The slowest speed possible should be used before starting up or down hills. Avoid stopping or changing speed on hills. If stopping is absolutely necessary, pull drive levers into the neutral position and push to the outside of the unit and engage the parking brake.
OPERATION Mowing Tips • • • • • • • • 30 Observe and flag rocks and other fixed objects to avoid collisions. Begin with a high cutting height and reduce it until the desired mowing result is attained. The average lawn should be cut to 2½" (64 mm) during the cool season and over 3" (76 mm) during the hot months. For healthier and better looking lawns, mow often after moderate growth. For best cutting performance, grass over 6" (15 cm) in height should be mowed twice.
OPERATION Stopping the Engine Allow the engine to idle a minute in order to attain normal operating temperature before stopping it, if it has been worked hard. Avoid idling the engine for longer periods, as there is a risk of the spark plugs fouling. 1. Disengage the mower deck by sliding the blade control lever out of the lock notch and down into the lower position. 8058-074 Disengage the mower blades 2. Raise the mower deck by pulling the lifting lever upward to the transport position. 3.
OPERATION Moving Machine By Hand When pushing or pulling the mower, be sure to engage the EZT Hydrogear bypass linkages. The EZT bypass linkages are located on the rear of the frame, below the rear engine guard. 1. Raise the deck into the highest cutting position. 2. Pull the EZT bypass linkages out and into the slots. Release linkages to hold in the bypass position. 3. Release park brake. 4. To reengage the EZT’s to drive, reverse the above procedure.
MAINTENANCE Maintenance Schedule The following is a list of maintenance procedures that must be performed on the machine. For those points not described in this manual, visit an authorized service workshop. An annual service carried out by an authorized service workshop is recommended to maintain your machine in the best possible condition and to ensure safe operation. Read Maintenance in the Safety section.
MAINTENANCE Daily MAINTENANCE Check/adjust throttle cable Check the condition of belts, belt pulleys Change the engine oil 1) Replace the engine oil filter Clean/replace the spark plugs Replace the fuel filter Check the caster wheels (every 200 hours) Check/adjust the mower deck Check the engine valve clearance 3) Perform the 300-hour service 3) ● First change after 5-8 hours. When operating with a heavy load or at high ambient temperatures, replace every 50 hours.
MAINTENANCE Battery Your mower is equipped with a maintenance free battery that does not need servicing. However, periodic charging of the battery with an automotive type battery charger will extend its life. • Keep battery and terminals clean. • Keep battery bolts tight. • See chart for charging times. Cleaning battery and terminals Corrosion and dirt on the battery and terminals can cause the battery to lose power. 1. Open the terminal access doors. 2.
MAINTENANCE Safety System The machine is equipped with a safety system that prevents starting or driving under the following conditions. The engine can only be started when: 1. The mower deck is disengaged. 2. The steering controls are in the outer, locked neutral position. 3. The driver is sitting in the driver’s seat. 4. The parking brake is on. Make daily inspections to ensure that the safety system works by attempting to start the engine when one of the conditions is not met.
MAINTENANCE Parking Brake Visually check that no damage is found on the lever, links, or switch belonging to the parking brake. Perform a standstill test and check that there is sufficient braking action. To adjust the parking brake, contact the Husqvarna service workshop. WARNING! Faulty adjustment can result in reduced braking ability and can cause an accident. 8050-005 V-belts Check for proper operation of parking brake Check every 100 hours of operation. Check for severe cracking and large nicks.
MAINTENANCE EZT Belt To replace EZT belt Park the mower on a level surface. Engage the park brake. EZT belt removal NOTE: Be careful not to damage the fan blades on the EZT as this can affect cooling or damage the EZT. 1. Remove the deck belt (see To Replace Deck Belt in this section of the manual). 2. Create slack in the belt by pushing the spring loaded idler arm inward. Rotate arm to release belt tension. 3. The belt should now be able to be removed from the engine pulley and EZT pulleys.
MAINTENANCE Adjusting the Mower Deck WARNING! Before performing any service or adjustment checklist: 1. 2. 3. 4. 5. Engage the parking brake. Place the Blade switch in the disengaged position. Turn ignition switch to OFF position and remove the key. Make sure the blades and all moving parts have completely stopped. Disconnect the spark plug wire from all spark plugs and place the wire where it cannot come in contact with the plug. WARNING! Blades are sharp.
MAINTENANCE Caster Wheels Check every 200 hours. Check that wheels rotate freely. If wheels do not rotate freely take the unit to your dealer for service. Foam filled tires or solid tires will void the warranty. Removal and installation of caster wheel 1. Remove nut (1) and caster bolt (2). 2. Pull the wheel out of the fork and take care of the sleeve and spacers (3). 3. Reinstall in reverse order. Tighten caster bolt.
LUBRICATION 8058-132 12/12 Every year Lubricate with grease gun Level check 1/52 Every Week Oil change Filter change 1/365 Every day General Remove the ignition key to prevent unintentional movements during lubrication. When lubricating with an oil can, it must be filled with engine oil. When lubricating with grease, unless otherwise stated, use a high grade molybdenum disulphide grease. For daily use, the machine should be lubricated twice weekly. Wipe away excess grease after lubrication.
LUBRICATION Front Wheel Mount Lubricate with a grease gun, one zerk for each wheel mount. Use only good quality bearing grease. Grease from well-known brand names (petrochemical companies, etc.) usually maintains a good quality. Front Wheel Bearings Lubricate with a grease gun, one zerk for each set of wheel bearings. Use only good quality bearing grease. IMPORTANT INFORMATION Use minimal lubrication and remove excess lubricant so that is does not come into contact with belts or belt pulley drive surfaces.
TROUBLESHOOTING Problem / Cause Engine will not start • Blade lever is engaged • Steering controls are not locked in neutral position • Driver is not sitting in driver’s seat • Parking brake is not activated • Battery is dead • Contamination in carburetor or fuel line • Fuel supply is closed or tap for fuel tank is in wrong position • Clogged fuel filter or fuel line Starter does not turn the engine over • Dead battery • Poor contacts on the battery terminal cable connections • Fuse blo
TROUBLESHOOTING Problem / Cause Engine overheats • Clogged air intake or cooling fins • Engine overloaded • Poor ventilation around engine • Defective engine speed regulator • Soot in the combustion chamber • Too little or no oil in the engine • Fouled spark plug Battery not charging • Poor contact with battery terminal cable connectors Machine moves slowly, unevenly, or not at all • Parking brake on • Hydraulic pump bypass linkage engaged • Drive belt for the transmission gears slack o
STORAGE Winter Storage The machine should be readied for storage at the end of the mowing season or if it will not be in use for longer than 30 days. Fuel allowed to stand for long periods of time (30 days or more) can leave sticky residues that can plug the carburetor and disrupt engine function. Fuel stabilizers are an acceptable option as regards to the sticky residues that can occur during storage. Add stabilizer to the fuel in the tank or in the storage container.
WIRING DIAGRAM 8053-002 46
TECHNICAL DATA 967017101 Engine Manufacturer Briggs & Stratton Type Endurance Power 21 hp (1, 2 Lubrication Pressure with oil filter Fuel Min 86 octane unleaded (Maxethanol 5%, Max MTBE 15%) Fuel tank capacity 3 gallons / 11.
TECHNICAL DATA Torque Specifications Engine crankshaft bolt Deck pulley bolts Lug nuts Blade bolt Standard ¼" fasteners 50 ft/lb (67 Nm) 150 ft/lb (203 Nm) 75 ft/lb (100 Nm) 90 ft/lb (122 Nm) 9 ft/lb (12 Nm) Standard 5/16" fasteners Standard 3/8" fasteners Standard 7/16" fasteners Standard ½" fasteners 18 ft/lb (25 Nm) 33 ft/lb (44 Nm) 52 ft/lb (70 Nm) 80 ft/lb (110 Nm) HEX HEAD CAP SCREWS The torque values shown should be used as a general guideline when specific torque values are not given. U.S.
CONFORMITY CERTIFICATES USA requirements Labels are placed on the engine and/or in the engine compartment stating that the machine will fulfill the requirements. This is also applicable to special requirements for any of the states, (California emission rules etc.). Do not remove any of these labels. Certificates can also be supplied with the machine at delivery or written in the Engine manual. Take care of them as they are valuable documents.
SERVICE JOURNAL Action Date, mtr reading, stamp, sign Delivery Service Charge battery. Adjust tire pressure of all wheels according to Technical Data. Mount the steering controls in the normal position. Connect the contact box to the cable for the seat’s safety switch. Check that the right amount of oil is in the engine. Adjust the position of the steering controls. Fill with fuel and open the fuel shut off valve. Start the engine. Check that there is drive to both wheels. Check the mower deck adjustment.
SERVICE JOURNAL Action Date, mtr reading, stamp, sign After the First 10 Hours Change engine oil. 25-Hour Service Check the fuel pump’s air filter. Check the hydraulic system’s oil level. Check the tire pressures. Lubricate the belt adjuster, mower deck. Lubricate the belt adjuster, hydraulic pumps. Check/clean the engine’s cooling air intake. Clean air filter dust cap.
SERVICE JOURNAL Action 50-Hour Service Perform the 25-hour service. Clean/replace the air cleaner’s paper filter cartridge (shorter intervals for dusty operating conditions). Change engine oil. Lubricate according to lubrication chart. Check/adjust the parking brake. 100-Hour Service Perform the 25-hour service. Perform the 50-hour service. Change the engine oil filter. Clean/replace the spark plugs. Replace the fuel filter. Clean the cooling fins on the engine and transmission. Check V-belts.
SERVICE JOURNAL Action Date, mtr reading, stamp, sign 300-Hour Service Perform the 25-hour service. Perform the 50-hour service. Perform the 100-hour service. Check/adjust the mower deck. Clean the combustion chamber and grind the valve seats. Check the engine valve clearance. Replace the air cleaner’s foam prefilter. At Least Once Each Year Clean the engine’s cooling air intake (25 hours). Replace the air cleaner’s pre-filter (foam) (300 hours). Replace the air filter’s paper cartridge.
SERVICE JOURNAL Action 54 Date, mtr reading, stamp, sign
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