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Husqvarna MZ28ZT BF Operator's Manual

Husqvarna ride-on mower
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Operator Manual
MZ28ZT BF / 966663701
Please read the operator's manual carefully and make sure
you understand the instructions before using the machine.
Form Number 115 427927R1



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  Summary of Contents for Husqvarna MZ28ZT BF

  • Page 1 Operator Manual MZ28ZT BF / 966663701 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine. Form Number 115 427927R1 03/29/11...
  • Page 2 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.
  • Page 3: Table Of Contents

    CoNTENTS INTRoDUCTIoN ............5 Stopping the Engine .........31 Driving and Transport on Public Roads .....5 Mowing Tips .............32 Towing ..............5 Manual Transport..........33 operating ............5 MAINTENANCE ............34 Good Service .............6 Battery ..............36 SYMBoLS AND DECALS .........7 Safety System ...........37 SAFETY ..............9 Tire Pressures ...........37 Safety Instructions ..........9 Parking Brake ...........37 Personal Safety Equipment ......11...
  • Page 4 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.
  • Page 5: Introduction

    INTRODUCTION Congratulations Towing Thank you for purchasing a Husqvarna ride-on mower. If machine is equipped with a tow hitch, use extreme This machine is built for superior efficiency to rapidly caution when towing. Never allow children or others in mow primarily large areas. A control panel that is or on the towed equipment.
  • Page 6: Good Service

    INTRODUCTION Good Service When you need spare parts or support in service Husqvarna’s products are sold all over the world questions, warranty issues, etc., please consult and only in specialized retail stores with complete the following professional: service. This ensures that you as a customer receive only the best support and service.
  • Page 7: Symbols And Decals

    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 Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx xxxxxx xxxxxxxxx. xx xxxxxxxx xxxx xxxxxxxxx.
  • Page 8 syMbOls aND DeCals Read Shut off engine and Keep a safe Use on slopes No passengers operator’s remove key before distance from no greater Manual performing any the machine than 10° maintenance or repair work Whole body Severing of fingers Do not open or Careful backing up, Careful going...
  • Page 9: Safety

    saFeTy Safety Instructions These instructions are for your safety. Read them carefully. WARNING! This symbol means that important safety instructions need to be emphasized. It concerns your safety. IMPORTANT: THIS CUTTING MACHINE IS CAPABLE oF AMPUTATING HANDS AND FEET AND THRoWING oBJECTS.
  • Page 10 saFeTy • Watch for traffic when operating near or crossing roadways. • Use extra care when loading or unloading the machine into a trailer or truck. • Always wear eye protection when operating machine. • Data indicates that operators age 60 years and above are involved in a large percentage of riding mower-related injuries.
  • Page 11: Personal Safety Equipment

    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.
  • Page 12 saFeTy 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. •...
  • Page 13: Safe Handling Of Gasoline

    saFeTy WARNING! The engine must not be started when the driver’s floor plate or any protective plate for the mower deck’s drive belt is removed. Safe Handling of Gasoline To avoid personal injury or property damage, use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive.
  • Page 14: General Maintenance

    saFeTy General Maintenance • 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.
  • Page 15 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. •...
  • Page 16: Transport

    Follow the manufacturer’s recommendation for weight limits for towed equipment. Do not tow near ditches, canals, and other hazards. Spark Arrestor A spark arrestor for the muffler is available through your authorized Husqvarna dealer.
  • Page 17: Controls

    CONTROls This operator’s manual describes the Husqvarna Zero hydraulic pumps. Using the left and right steering Turn Rider. The rider is fitted with a Briggs & Stratton controls, the flow is regulated and thereby the four-stroke overhead valve engine. direction and speed.
  • Page 18: Motion Control Levers

    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.
  • Page 19: Hour Meter

    CONTROls 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. The CHG oIL icon will come on and shut off automatically.
  • Page 20: Parking Brake

    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.
  • Page 21: Fuses

    CONTROls Release the key to the RUN position when the engine has started. 8058-046 Ignition switch - RUN position For using “accessory”, turn the key counter clockwise. 8066-005 Ignition switch - accessory Fuses Fuses are located on the left hand side of the machine.
  • Page 22: Cutting Height Adjuster

    CONTROls 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. For transport, push the lift pedal fully forward until the deck lift latches in the transport (highest) position.
  • Page 23: Refueling

    CONTROls Refueling 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).
  • Page 24: Operation

    OPeRaTION Read the Safety Instructions section and the Slowly move both control levers forward slightly. This following pages if you are unfamiliar with the machine. will allow mower to start moving forward in a straight line. Pull the control levers back to the neutral position Training and the mower should stop moving.
  • Page 25: Before Starting

    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. •...
  • Page 26 OPeRaTION 4. Disengage the mower blades by depressing the blade switch. 8058-043 Press the control for disengaging the mower deck 5. Move the steering controls outward to the locked (outer) neutral position. 80661-012 Place controls in neutral position 6. Move the throttle to the middle position. 80658-050 Set the throttle...
  • Page 27 OPeRaTION 7. open the fuel tank valve. WARNING! Engine exhaust and certain vehicle components contain or emit chemicals considered to cause cancer, birth defects or other reproductive system damage. The engine exhaust contains carbon monoxide, which is an odorless, colorless, poisonous gas. Do not use the machine in enclosed spaces.
  • Page 28: Jumper Cables

    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.
  • Page 29: Running

    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.
  • Page 30: Operating On Hills

    OPeRaTION Operating on Hills Read the Safety Instructions Driving on Slopes in the Safety Instructions. WARNING! IMPORTANT INFORMATION Do not drive up or down hills with Control levers return to neutral when released. slopes greater than 10 degrees. Do This may cause the mower to suddenly stop. not drive across slopes.
  • Page 31: Stopping The Engine

    OPeRaTION Stopping the Engine Move the throttle to the minimum position (tortoise symbol). If the engine has been worked hard, allow it to idle at least 60 seconds to attain a normal operating temperature before stopping. To prevent fouling the spark plugs, avoid idling the engine for longer periods.
  • Page 32: Mowing Tips

    OPeRaTION Mowing Tips WARNING! • observe and flag rocks and other fixed objects to Clear the lawn of stones and other avoid collisions. objects that can be thrown out by the • Begin with a high cutting height and reduce it blades.
  • Page 33: Manual Transport

    OPeRaTION Moving Machine By Hand WARNING! No adjustments or maintenance should be carried out unless: • the engine stopped • the ignition key removed • the parking brake activated When pushing or pulling the mower, engage the IZT (Integrated Zeroturn Transaxle) bypass linkages. The linkages are located on each side of the rear of the unit below the rear engine plate.
  • Page 34: Maintenance

    MaINTeNaNCe Daily At least Maintenance interval once in hours each MAINTENANCE Before After year ● Check the parking brake ■ Check the engine’s oil level (every refueling) ● Check the safety system ♦ Check for fuel and oil leakages ■ Check/clean the engine’s cooling air intake ●...
  • Page 35 MaINTeNaNCe Daily At least Maintenance interval once in hours each MAINTENANCE Before After year ■ Check/adjust throttle cable ● ● Check the condition of belts, belt pulleys ■ ■ Change the engine oil ■ ■ Replace the engine oil filter ■...
  • Page 36: Battery

    MaINTeNaNCe Battery STANDARD STATE APPRoXIMATE BATTERY CHARGING TIME* To FULL CHARGE AT 80 F / 27 Your mower is equipped with a maintenance free BATTERY Maximum Rate at: battery and does not need servicing. However, CHARGE 50 Amps 30 Amps 20 Amps 10 Amps periodic charging of the battery with an automotive...
  • Page 37: Safety System

    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.
  • Page 38: Deck Belt

    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 " socket on the spring idler bolt, relieve the tension on the belt.
  • Page 39: Pump Belt

    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.
  • Page 40: Cutting Blades

    5. Torque blade bolt to 45-55 ft-lbs (60-75 Nm). Blade attachment IMPORTANT INFORMATION Special blade bolt is heat treated. Replace with a Husqvarna bolt if required. Do not use lower grade hardware than specified. WARNING! Before performing any service or adjustment checklist: 1.
  • Page 41: Adjusting The Mower Deck

    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.
  • Page 42: Anti-Scalp Rollers

    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. Anti- scalp rollers then keep the deck in the proper position to help prevent scalping in most terrain conditions.
  • Page 43: Caster Wheels

    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.
  • Page 44: Lubrication

    lUbRICaTION Lubrication Schedule 8058-056 12/12 Every year Lubricate with grease gun Level check 1/52 Every Week oil change Filter change 1/365 Every day Change hydraulic drive filters. p See Engine Manufacturer's manual General Remove the ignition key to prevent unintentional Wipe away excess grease after lubrication.
  • Page 45: Wheel And Deck Zerks

    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 with a grease gun until the grease is forced out around the the grease cap. Front Wheel Bearings Lubricate 3-4 strokes with a grease gun on each set of wheel bearings.
  • Page 46: Transaxle (Transmission) Fluid Change

    lUbRICaTION Transaxle (Transmission) Fluid Change 10. Fill with 20W50 motor oil until oil just appears This transaxle is designed with an external filter for at the bottom of each transaxles’ top port ease of maintenance. To ensure constant fluid quality (approximately 2 quarts per transaxle, 4 quarts levels and longer life, an oil filter change interval of total).
  • Page 47: Purging Procedures

    lUbRICaTION Purging Procedures Due to the effects air has on efficiency in hydrostatic drive applications, it is critical to purge the system. These purge procedures should be implemented any time a hydrostatic system has been opened to facilitate maintenance or any additional oil has been added to the system.
  • Page 48: Troubleshooting Guide

    TROUblesHOOTING GUIDe Problem Cause Engine will not start. • 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. •...
  • Page 49 TROUblesHOOTING GUIDe Problem Cause Machine vibrates. • Blades are loose. • Blades are incorrectly balanced. • Engine is loose. Engine overheats. • Clogged air intake or cooling fins. • Engine overloaded. • Poor ventilation around engine. • Defective engine speed regulator. •...
  • Page 50: Storage

    It is very flammable and purchase year, model, type, and serial number. can cause serious personal injury Always use genuine Husqvarna spare parts. and property damage. Drain the fuel An annual check-up at an authorized service into an approved container outdoors workshop is a good way to ensure that the machine and store far away from open flame.
  • Page 51: Wiring Diagrams

  • Page 52: Technical Data

    TECHNICAL DATA MZ28ZT BF / 966663701 Engine Manufacturer Briggs & Stratton Type Endurance Power 28 HP Lubrication Pressure w/ Oil Filter Fuel Min 87 octane unleaded (Max ethyl alcohol 10%, Max MTBE 15%) Fuel tanks capacity 5 gallons / 9 liters...
  • Page 53 TECHNICAL DATA MZ28ZT BF / 966663701 Frame Cutting Width Cutting Height 1"-4½" (2.5-11.4 cm) Uncut Circle Number of Blades Blade Length Nose Roller Sprung Seat Suspension Hinged Arm Rests Hour Meter Blade Engagement 200 ft-lb Warner Deck Construction Productivity Dimension...
  • Page 54: Torque Specifications

    TeCHNICal DaTa Torque Specifications Hex Head Cap Screws The torque values shown should be used as a general guideline when specific torque values are not given. U.S. Standard Hardware Grade SAE Grade 5 SAE Grade 8 Flangelock Screw w/Flangelock Nut Size ft./lbs ft./lbs...
  • Page 55: Conformity Certificates

    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.
  • Page 56: Service Journal

    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.
  • Page 57: Service Journal

    seRVICe JOURNal Action Date, mtr reading, stamp, sign After 10 hours Change the engine oil. Change the oil filter. Check hydraulic oil level. Inspect hydraulic hoses. Inspect hydraulic belt Inspect hydraulic filter. Check neutral position. Check safety system. Check seat belt. Check fuel system for leaks.
  • Page 58 seRVICe JOURNal Action Date, mtr reading, stamp, sign 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.
  • Page 59 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 with cables. Lubricate according to lubrication chart. Check/clean the engine’s cooling air intake. Clean the air cleaner’s pre-filter (foam).
  • Page 60: Hour Service

    seRVICe JOURNal Action Date, mtr reading, stamp, sign 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...
  • Page 61 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...
  • Page 62 seRVICe JOURNal Action Date, mtr reading, stamp, sign 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. Replace the engine oil filter Check/adjust the cutting height Check/adjust the parking brake Clean/Change the spark plugs...

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