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 MZ5425S / 250211 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
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 Driving and Transport on Public Roads..............5 Towing.................................................................5 Operating............................................................5 Good Service......................................................6 Manufacturing Number.......................................6 SYMBOLS AND DECALS..........................................7 SAFETY........................................
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 Towing 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 that is 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.
INTRODUCTION Good Service Husqvarna's products are sold 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 inspected and adjusted by your retailer. See the certificate in the Service Journal in this operator’s manual. When you need spare parts or support in service questions, warranty issues, etc.
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 und
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.
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 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. WARNING! CHILDREN CAN BE INJURED BY THIS EQUIPMENT. The American Academy of Pediatrics recommends that children be a minimum of 16 years of age before operating a riding lawn mower.
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.
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 Kohler 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 3 2 4 5 1 14 5 13 6 7 8 12 9 11 10 8058-152 1. 2. 3. 4. 5. Motion control levers Parking brake Tracking knob Fuel tank Hydro release levers 6. 7. 8. 9.
CONTROLS Motion 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 left of the machine. Pull the lever backward to activate the brake and push 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.
CONTROLS Ignition Switch The ignition switch is placed on the control panel and is used to start and stop the engine. Turn the key clockwise to start the engine. 8058-145 Ignition switch Choke Control The choke control is used for cold starts in to provide the engine with a richer fuel mixture. For cold starts the control should be pulled out to its extent. Push the choke in once the engine starts. 8058-145 Choke control Fuses Fuses are located on the left hand side of the machine.
CONTROLS Fuel Tank Read the safety instructions before refueling. The capacity for the tank is 5 gallons (19 liters). Regularly check the gas cap gasket for damage and keep the cap properly tightened. The engine will run on a minimum of 87-octane unleaded gasoline (no oil mix). Environmentally adapted alkylate gasoline can be used. See Technical Data concerning ethanol fuel. Methanol fuel is not allowed. Do not use E85 alcohol based fuel. Damage to the engine and components may occur.
CONTROLS Fuel Shut Off Valve The fuel shut off valve is centered behind the rear of the seat. The valve is off when the handle tab is turned perpendicular to the fuel line. IMPORTANT INFORMATION Always raise the deck to the highest position for transport. 8065-010 Fuel shut off valve in the CLOSED position. Cutting Height Adjuster The desired cutting height is set with the height pin. The cutting height pedal releases the deck lift to place the deck and the selected height.
CONTROLS Seat Adjustment Lever The seat can be adjusted lengthways. When making adjustments, the lever under the front edge of the seat is moved to the left (as seen by the driver in the seat), after which the seat can be moved backward or forward. 8011-441 Lengthways adjustment Hour Meter The hour meter displays the total operating time. It will flash CHG OIL (Change Oil) at 50 hour intervals. The flash duration is one hour before and one hour after the interval.
OPERATION Read the Safety section and the 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 1. Read the sections on Safety and Controls before starting the machine. 2. Perform the daily maintenance before starting (see Maintenance Schedule in the Maintenance section). 3. Check that there is sufficient fuel in the fuel tank. 4. Adjust the seat to the desired position. 8011-441 Lengthways adjustment 5. Set the deck cutting height by inserting the lift pin into the desired cut height.
OPERATION Starting the Engine 1. Sit on the seat. 2. Raise the mower deck to the transport position by locking the lift pedal fully forward. 8058-183 Set mower deck to the transport position 3. Activate the parking brake. 8058-210 Activate parking brake before starting 4. Disengage the mower blades by pressing the blade switch downwards.
OPERATION 5. Move the steering controls outward to the locked (outer) neutral position. 8058-208 Place controls in neutral position 6. Move the throttle to the middle position. If the engine is cold, the choke control should be pulled up. 8058-160 Set the throttle and choke 7. Open the fuel tank valve.
OPERATION 8. Press in and turn the ignition key to the start position. IMPORTANT INFORMATION Do not run the starter for more than 5 seconds each time. If the engine does not start, wait about 10 seconds before retrying. 8050-780 Turn to the start position 9. When the engine starts, immediately release the ignition key back to the run position. 10. Slowly push in the choke control knob, if it was used to start a cold engine.
OPERATION Weak Battery WARNING! Lead-acid batteries generate explosive gases. Keep sparks, flame and smoking materials away from batteries. Always wear eye protection when around batteries. IMPORTANT INFORMATION The mower is equipped with a 12-volt negative grounded system. The other vehicle must also be a 12-volt negative grounded system. Do not use the mower to start other vehicles.
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 inwards, out of the neutral position (N). 8058-210 Parking brake 3. Release foot pedal latch and lower deck to set cutting height.
OPERATION Operating on Hills Read the Safety Instructions Driving on Slopes in the Safety section. • The slowest speed possible should be used before starting up or down hills. • Avoid stopping or changing speed on hills. WARNING! Do not drive up or down hills with slopes greater than 10 degrees. Do not drive across slopes. • 8058-160 Set blade engagement and throttle control If stopping is absolutely necessary, pull steering levers into the neutral position and push to the outside of the unit.
OPERATION Stopping the Engine 1. Move the throttle to the minimum position (tortoise symbol). 2. Move the steering controls outward. 3. Disengage the mower deck by depressing the blade switch. 8058-162 Disengage the mower deck and move throttle to minimum 4. Raise the mower deck by pressing the foot pedal forward to the transport position. 5. When the machine is standing still, activate the parking brake by pulling the lever upward.
OPERATION Mowing Tips • • • • • • • • • 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 Moving Machine By Hand When pushing or pulling the mower, engage the IZT (Integrated Zeroturn Transaxle) bypass linkages. The release levers are located on each side of the rear of the unit below the rear engine plate. 1. Raise the deck to the highest (transport) position. 2. Pull the release levers up and out of the keyhole slots. Release the levers with the head outside the bracket and held into the bypass setting. 3. To reengage the IZTs 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 Before After At least once each year Maintenance interval in hours 50 250 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 Replace air filter 2) (paper filter) Check the caster wheels (every 200 hours) Replace the air cleaner’s pre-filter 2) (foam) Change the hydraulic oil (every 500 hours) Replace the hydraulic oil filter (every 500 hours)
MAINTENANCE Battery STANDARD Your mower is equipped with a maintenance free battery and 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. BATTERY STATE APPROXIMATE BATTERY CHARGING TIME* TO FULL CHARGE AT 80OF / 27OC OF CHARGE Maximum Rate at: 50 Amps 30 Amps 20 Amps 10 Amps 12.6V 100% - FULL CHARGE - 12.
MAINTENANCE Safety System This 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 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. Change the conditions and try again.
MAINTENANCE Deck Belt Deck Belt Removal Park on a level surface. Apply park brake. Lower the deck into the lowest cutting position. 1. Remove foot plate and belt shields. 2. Using a ratchet or breaker bar with a 9/16" socket on the spring idler bolt, relieve the tension on the belt. 3. Remove any dirt or grass that may have accumulated around the cutter housings and entire deck surface. 4. Carefully slip the belt over the top of the cutter housing pulleys. 5.
MAINTENANCE Pump Belt The belts are not adjustable. Replace belts if they begin to slip from wear. Replacing Pump Belt Park the mower on a level surface. Engage the parking brake. Belt Removal From the top side of the deck: 1. Remove the deck belt (see Deck Belt Removal in this section of the manual). 2. Tilt seat forward to access fan covers. Remove both fan covers. From the underside of the mower: 3. Remove clutch stop to access the belt. 4.
MAINTENANCE Cutting Blades For the best moving results, it is important that blades are well sharpened and not damaged. Replace blades that have been bent or cracked by hitting obstacles. Let the service workshop decide whether a blade with large nicks can be repaired/ground or must be replaced. Balance the blades after sharpening. Check the blade mounts. WARNING! Blades are sharp. Protect your hands with gloves and/or wrap blades with a heavy cloth when handling.
MAINTENANCE Adjusting the Mower Deck Check the tire pressure before adjustment of the mower deck. See Tire Pressures in Maintenance section. Faulty mower deck adjustments will cause an uneven mowing result. Leveling deck Adjust the deck while the mower is on a level surface. Make sure the tires are inflated to the correct pressure. See Technical Data / Transmission. If the tires are under or over inflated, the deck cannot be properly adjusted. Four slots control the height and pitch of the mower deck.
MAINTENANCE Anti-scalp rollers Anti-scalp rollers are properly adjusted when they are just slightly off of the ground when the deck is at the desired cutting height in the operating position. Antiscalp rollers then keep the deck in the proper position to help prevent scalping in most terrain conditions. IMPORTANT INFORMATION Adjust anti-scalp rollers with the mower on a flat level surface. Anti-scalp rollers can be set in three positions: • Upper position 1½ to 3" (38 to 76 mm) grass.
MAINTENANCE Caster Wheels Check every 200 hours. Check that wheels rotate freely. IMPORTANT INFORMATION DO NOT add any type of tire liner or foam fill material to the tires. Excessive loads created by foam tires will cause premature failures. Use only O.E.M. specified tires. Removal and Installation Remove nut and caster bolt. Pull the wheel out of the fork. To reInstall, reverse the order. Tighten caster bolt. If wheels do not rotate freely, take the unit to the dealer for service.
LUBRICATION Lubrication Schedule 8058-056 12/12 Every year 1/52 Every Week 1/365 Every day Lubricate with grease gun Level check Oil change Filter change * Change hydraulic drive filters. p See Engine Manufacturer's manual 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 high grade molybdenum disulphide grease.
LUBRICATION Wheel and Deck Zerks Use only good quality bearing grease. Grease from well-known brand names (petrochemical companies, etc.) usually maintains a good quality. Front Wheel Mount Lubricate 3-4 strokes with a grease gun on each set of wheel mounts. Front Wheel Bearings Lubricate 3-4 strokes with a grease gun on each set of wheel bearings. 8058-057 Lubricating front wheels Deck Spindles Lower the cutting deck completely.
LUBRICATION Transaxle (Transmission) Fluid Change This transaxle is designed with an external filter for ease of maintenance. To ensure constant fluid quality levels and longer life, an oil filter change interval of every 200 hours is recommended. The following procedure is performed with the transaxles installed in the mower and the mower on level ground. Apply the pump release valve for each transaxle and set the parking brake. 1. Remove the three ¼" filter guard screws and filter guard.
TROUBLESHOOTING Problem Engine will not start Cause • Blade switch is engaged • Steering controls are not locked in the neutral position • Parking brake is not activated • Battery is dead • Contamination in the carburetor or fuel line • Fuel supply is closed • Clogged fuel filter or fuel line • Faulty ignition system Starter does not turn the engine over • Dead battery • Poor contacts on the battery terminal cable connections • Fuse blown • Ignition system faulty • Fault in the starter safety circuit See
TROUBLESHOOTING Problem Machine vibrates Cause • Blades are loose • Blades are incorrectly balanced • Engine is loose • Blades are bent Engine overheats • Clogged air intake or cooling fins • Engine overloaded • Poor ventilation around engine • Defective engine speed regulator • Too little or no oil in the engine • Fouled spark plug Battery not charging • Poor contact with battery terminal cable connectors • Charging lead is disconnected • Fault in engine charging system Machine moves slowly, unevenly
STORAGE Winter Storage The machine should be readied for storage at the end of the mowing season or if it will not be used 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 51
TECHNICAL DATA MZ5425S / 250211 Engine Manufacturer Type Kohler 1) Courage Pro Power Lubrication Fuel Fuel tank capacity Cooling Alternator 25 HP 2) Pressure w/ Oil Filter Min 87 octane unleaded (Max ethyl alcohol 10%, Max MTBE 15%) 5 gallons / 19 liters Air cooled 12v 15 amp @ 3600 rpm Starter Electric Transmission Transmission Speed and direction controls ZT-3100 Hydro Gear Dual levers, foam gripped Speed forward 0-8 mph - 0-12.9 Km/h Speed reverse 0-4 mph - 0-6.
TECHNICAL DATA MZ5425S / 250211 Frame Cutting Width 54" (137 cm) Cutting Height 1½"-4½" (3.8-11.4 cm) Uncut Circle 0 Number of Blades 3 Blade Length Nose Roller Seat 18" / 46 cm Yes Standard w/ slides Hinged Arm Rests Yes Hour Meter Yes Blade Engagement 200 ft-lb Warner Clutch Deck Construction Stamped Productivity 4.
TECHNICAL DATA Torque Specifications Engine crankshaft bolt Deck pulley bolts Lug nuts Blade bolt 50 ft/lb (67 Nm) 150 ft/lb (203 Nm) 75 ft/lb (100 Nm) 90 ft/lb (122 Nm) Standard ¼" fasteners Standard 5/16" fasteners Standard 3/8" fasteners Standard 7/16" fasteners Standard ½" fasteners 9 ft/lb (12 Nm) 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
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 these valuable documents.
SERVICE JOURNAL Action Date, mtr reading, stamp, sign Delivery Service Charge the battery. Adjust the tire pressure of all wheels to 15 PSI (1 bar). 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 10 hours Change the engine oil. Inspect hydraulic hoses. Inspect hydraulic belt Inspect hydraulic filter. Check neutral position. Check safety system. Check seat belt. Check fuel system for leaks. Inspect safety guards and shields. Check brake adjustment.
SERVICE JOURNAL Action Daily Service Clean debris from mower. Check engine oil level. Check the tire pressures. Check underside of deck. Inspect deck pulleys. Check/clean the engine’s cooling air intake. Check safety system. Check seat belt. Check fuel system for leaks. Inspect safety guards and shields. Check brake adjustment.
SERVICE JOURNAL Action Date, mtr reading, stamp, sign 25-Hour Service Check the fuel pump’s air filter. Sharpen/Replace mower blades if required. Check the tire pressures. Check battery and cables. Lubricate according to lubrication chart. Check/clean the engine’s cooling air intake. Clean the air cleaner’s pre-filter (foam).
SERVICE JOURNAL Action 100-Hour Service Grease fittings (caster pivots and caster wheels) Inspect dampeners Inspect frame Inspect throttle cable Inspect hardware Check the tire pressures Change the engine oil and filter Change air filter Inspect spark plug Inspect fuel filter Check engine RPM Clean underside of deck Check blade pitch Grease blade spindles Inspect spindle bearings Inspect deck belt and blades Inspect idler arm bearings Inspect deck idler pulleys Inspect hydraulic filter Inspect hydraulic dr
SERVICE JOURNAL Action Date, mtr reading, stamp, sign 300-Hour Service Grease fittings (caster pivots and caster wheels) Inspect dampeners Inspect frame Inspect throttle cable Inspect hardware Check the tire pressures Change the engine oil and filter Change air filter Inspect spark plug Inspect fuel filter Check engine RPM Clean underside of deck Check blade pitch Grease blade spindles Inspect spindle bearings Inspect deck belt and blades Inspect idler arm bearings Inspect deck idler pulleys Change hydrau
SERVICE JOURNAL Action At least once each year Clean the engine’s cooling air intake. Replace the air cleaner’s pre-filter (foam). Replace the air filter’s paper cartridge. Change the engine oil.
www.husqvarna.
