Husqvarna RZ4621 CA Operator's Manual

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Operator Manual
RZ4621 / 966659101
RZ5424 / 966659301
RZ4621 BF / 966676501
RZ4824F / 966678301
RZ4621 CA / 966659201
RZ4222F / 966659401
RZ4623 / 966678201
RZ5424 / 966691901
Please read the operator's manual carefully and make sure you
understand the instructions before using the machine.

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Summary of Contents for Husqvarna RZ4621 CA

  • Page 1 Operator Manual RZ4621 / 966659101 RZ4621 CA / 966659201 RZ5424 / 966659301 RZ4222F / 966659401 RZ4621 BF / 966676501 RZ4623 / 966678201 RZ4824F / 966678301 RZ5424 / 966691901 Please read the operator’s manual carefully and make sure you understand the instructions before using the machine.
  • Page 2 When this product is worn out and no longer used, it should be returned to the reseller or other party for recycling. 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.
  • Page 3: Table Of Contents

    COntentS IntRODUCtIOn ............... 5 mowing tips ............. 31 Driving and transport on Public Roads ...... 5 Stopping the engine ..........32 towing ................. 5 manual transport ............33 Operating ..............5 mAIntenAnCe ............... 34 Good Service .............. 6 maintenance Schedule ..........34 SymbOlS AnD DeCAlS ..........
  • 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 If machine is equipped with a tow hitch, use extreme mower. this machine is built for superior efficiency caution when towing. never allow children or others in to rapidly mow primarily large areas. A control panel or on the towed equipment.
  • Page 6: Good Service

    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.
  • 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. IMPORTANT INFORMATION WARNING! Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxx Xxxx xxxxxx xxxxx xxxx xxxxxxxxx xxxxxxxxx. xx xxxxxxxx xxxx xxxxxx. xxxxxx 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 • 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. •...
  • 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 where you last saw them. • Keep children out of the mowing area and in the watchful care of a responsible adult other than the operator.
  • 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. WARNING! Avoid electrical sparking and its consequences by the following...
  • Page 16: Transport

    SAfety • Allow the machine to cool before putting it in storage. • Regularly clean deck and underside of deck, avoid spraying engine and electrical components with water. 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.
  • Page 17: Controls

    COntROlS this operator’s manual describes the Husqvarna driven hydraulic pumps. Using the left and right Zero turn Rider. the rider is fitted with a four-stroke steering controls, the flow is regulated and thereby the overhead valve engine. direction and speed.
  • Page 18: Steering Control Levers

    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.
  • Page 19: Parking Brake

    COntROlS Parking Brake 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. the parking brake is found on the left of the machine. Push the release button and pull the lever backward to activate the brake—push forward to release it.
  • Page 20: Ignition Switch

    COntROlS Ignition Switch the ignition key is placed on the control panel and is used to start and stop the engine. 8052-001 Ignition switch Choke Control the choke control is used for cold starts in order to provide the engine with a richer fuel mixture. for cold starts on models with separate choke, the control should be pulled up.
  • Page 21: Fuel Tank

    COntROlS Fuel Tank Read the safety instructions before refueling. the machine has one fuel tank, just behind the console. the tank capacity is 4 gallons (15.1 liters). Regularly check the gas cap gasket for damage and keep the cap properly tightened. the engine will run on a minimum of 85-octane unleaded gasoline (no oil mix).
  • Page 22: Fuel Shut Off Valve

    COntROlS Fuel Shut Off Valve the fuel shut off valve is located at the left rear of the seat. the valve is off when the handle tab is turned perpendicular to the fuel line. 8011-419 IMPORTANT INFORMATION Fuel shut off valve in the CLOSED position Always raise the deck to the highest position for transport.
  • Page 23: Seat Adjustment Lever

    COntROlS Seat Adjustment Lever the seat can be adjusted lengthways. When making adjustments, the lever under the right side of the seat is pulled up, after which the seat can be moved backward or forward. 8058-023 Lengthways adjustment Hour Meter the hour meter displays the total operating time.
  • Page 24: Operation

    OPeRAtIOn Read “Safety Instructions” section and following Steering pages, if you are unfamiliar with the machine. To move forward and backward Training the direction and speed of the mower’s movements is effected by the movement of the control lever(s) Zero turn mowers are far more maneuverable than on each side of mower.
  • 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 move the steering controls outward to the locked (outer) neutral position. 8061-026 Place controls in neutral position move the throttle to the middle position. 8058-134 Set the throttle If the engine is cold, the choke control should be pulled up or pushed forward, depending on model. 8058-133 Set the choke control...
  • Page 27 OPeRAtIOn Press in and turn the ignition key to the start position. IMPORTANT INFORMATION Do not run the starter for more than 5 seconds 8050-780 each time. If the engine does not start, wait Turn to the start position approximately 10 seconds before retrying. When the engine starts, immediately release the ignition key back to the run position.
  • 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 Your 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 Release the parking brake by pushing the top release button in and 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 engage the mower deck by pulling out the blade switch. move throttle control to full throttle. the machine’s speed and direction are continuously variable using the two steering controls. When both controls are in the neutral position, the machine stands still. by moving both controls an equal amount forward or backward, the machine moves in a straight line forward or backward respectively.
  • Page 31: Mowing Tips

    OPeRAtIOn Mowing Tips WARNING! • Observe and flag rocks and other fixed objects to avoid collisions. Clear the lawn of stones and other objects that can be thrown out by the • begin with a high cutting height and reduce it blades.
  • Page 32: Stopping The Engine

    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.
  • Page 33: Manual Transport

    OPeRAtIOn Manual Transport When pushing or pulling the mower, engage the eZt (Integrated Zeroturn transaxle) bypass linkages. the eZt bypass linkages are located on the rear of the frame, below the rear engine guard. Raise the deck into the highest cutting position.
  • Page 34: Maintenance

    mAIntenAnCe Maintenance Schedule the following is a list of maintenance procedures that an authorized service workshop is recommended to must be performed on the machine. for those points maintain your machine in the best possible condition not described in this manual, visit an authorized and to ensure safe operation.
  • Page 35 mAIntenAnCe Daily At least Maintenance once interval each in hours year MAINTENANCE Before After ■ 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 the machine is equipped with a safety system that prevents starting or driving under the following conditions. the engine can only be started when: the mower deck is disengaged. the steering controls are in the outer, locked neutral position.
  • Page 38: Tire Pressures

    Visually check that no damage is found on the lever, cables, 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. IMPORTANT INFORMATION The machine must be absolutely standing still when applying the parking brake.
  • Page 39: V-Belts

    mAIntenAnCe V-belts Check every 100 hours of operation. Check for severe cracking and large nicks. nOte: the belt will show some small cracks in normal operation. the belts are not adjustable. Replace belts if they begin to slip from wear. Deck Belt Park on a level surface.
  • Page 40: Cutting Blades

    90 ft/lbs (122 nm). IMPORTANT INFORMATION 8058-027 Special blade bolt is heat treated. blade blade bolt (special) Replace with a Husqvarna bolt if required. Cutter housing Do not use lower grade hardware than Blade attachment specified.
  • Page 41: Adjusting The Mower Deck

    mAIntenAnCe Adjusting the Mower Deck 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” under transmission. If tires are under or over inflated, the deck cannot be properly adjusted.
  • Page 42: Anti-Scalp Rollers

    mAIntenAnCe Anti-scalp Rollers IMPORTANT INFORMATION Adjust anti-scalp rollers with the mower on a flat level surface. 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. 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 Remove nut and caster bolt.
  • Page 44: Lubrication

    lUbRICAtIOn 8050-832 12/12 every year lubricate with grease gun filter change 1/52 every Week Oil change level check 1/365 every day General Remove the ignition key to prevent unintentional Wipe away excess grease after lubrication. movements during lubrication. It is important to avoid getting lubricant on the belts When lubricating with an oil can, it must be filled with or the drive surfaces on the belt pulleys.
  • Page 45: Front Wheel Mount

    2-3 strokes per spindle. 80158-136 Deck spindle Transmission the transmission is maintenance free with no need for level checks or oil changes. If a leak occurs, replace the unit or contact your Husqvarna dealer.
  • Page 46: Troubleshooting

    tROUbleSHOOtInG 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 47 tROUbleSHOOtInG Problem Cause 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 • Contamination in the carburetor or fuel line. •...
  • Page 48: Storage

    Drain the fuel into Always use genuine Husqvarna spare parts. an approved container outdoors and An annual check-up at an authorized service far away from open flame. Never workshop is a good way to ensure that your machine use gasoline for cleaning.
  • Page 49: Schematics

    SCHemAtICS...
  • Page 50: Technical Data

    DAtA RZ4222F / 966659401 RZ4621 / 966659101 RZ4621 BF / 966676501 RZ4621 CA / 966659201 Engine manufacturer briggs & Stratton briggs & Stratton type endurance endurance Power 22 hp 21 hp 1,2) 1,2) lubrication Pressure with oil filter Pressure with oil filter...
  • Page 51 DAtA RZ4222F / 966659401 RZ4621 / 966659101 RZ4621 BF / 966676501 RZ4621 CA / 966659201 Frame Cutting Width 42" / 107cm 46" / 117cm Cutting Height 1.5 - 4" / 3.8 - 10.2 cm 1.5 - 4" / 3.8 - 10.2 cm...
  • Page 52 teCHnICAl DAtA RZ4623 / 966678201 RZ4824F / 966678301 Engine manufacturer Kohler Kawasaki type endurance fR691V Power 23 hp 24 hp 1,2) 1,2) lubrication Pressure with oil filter Pressure with oil filter fuel min 87 octane unleaded (max min 87 octane unleaded (max ethanol 10%, max mtbe 15%) ethanol 10%, max mtbe 15%) fuel tank capacity...
  • Page 53 teCHnICAl DAtA RZ4623 / 966678201 RZ4824F / 966678301 Frame Cutting Width 46" / 117cm 48" / 117cm Cutting Height 1.5 - 4" / 3.8 - 10.2 cm 1.5 - 4" / 3.8 - 10.2 cm Uncut Circle number of blades blade length 22.75"...
  • Page 54 teCHnICAl DAtA RZ5424 / 966691901 RZ5424 / 966659301 Engine manufacturer Kawasaki Kohler type fR691V SV720 Power 24 hp 24 hp 1,2) 1,2) lubrication Pressure with oil filter Pressure with oil filter fuel min 87 octane unleaded (max min 87 octane unleaded (max ethanol 10%, max mtbe 15%) ethanol 10%, max mtbe 15%) fuel tank capacity...
  • Page 55 teCHnICAl DAtA RZ5424 / 966691901 RZ5424 / 966659301 Frame Cutting Width 54" / 137cm 54" / 137cm Cutting Height 1.5 - 4" / 3.8 - 10.2 cm 1.5 - 4" / 3.8 - 10.2 cm Uncut Circle number of blades blade length 18¼"...
  • Page 56: Torque Specifications

    teCHnICAl DAtA Torque Specifications engine crankshaft bolt 50 ft/lb (67 nm) Standard ¼" fasteners 9 ft/lb (12 nm) Deck pulley bolts 150 ft/lb (203 nm) Standard " fasteners 18 ft/lb (25 nm) lug nuts 75 ft/lb (100 nm) Standard " fasteners 33 ft/lb (44 nm) blade bolt 90 ft/lb (122 nm)
  • Page 57: 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 58: Service Journal

    SeRVICe JOURnAl Date, mtr reading, stamp, sign Action 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...
  • Page 59 SeRVICe JOURnAl SeRVICe JOURnAl Date, mtr reading, stamp, sign Date, mtr reading, stamp, sign Action Action After the First 10 Hours Change engine oil 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...
  • Page 60 SeRVICe JOURnAl SeRVICe JOURnAl Date, mtr reading, stamp, sign Date, mtr reading, stamp, sign Action Action 50-Hour Service Perform the 25-hour service Clean/replace the air cleaner’s filter cartridge (paper filter (shorter intervals for dusty operating conditions) Change engine oil lubricate according to lubrication chart Check/adjust the parking brake Date, mtr reading, stamp, sign Action...
  • Page 61 SeRVICe JOURnAl SeRVICe JOURnAl Date, mtr reading, stamp, sign Date, mtr reading, stamp, sign Action Action 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 pre-filter (foam) Action...
  • Page 62 SeRVICe JOURnAl Date, mtr reading, stamp, sign Action...
  • Page 64 P/n 115 384327R1 08/26/10...

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