Husqvarna RZ4222F / 966659401, RZ5424 / 966659301, RZ4623 / 966678201 Turn to the start position

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operation

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 approximately 10 seconds before retrying.

When the engine starts, immediately release the ignition key back to the run position.

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 a odorless, colorless, poisonous gas. Do not use the machine in enclosed spaces.

8050-780

Turn to the start position

8050-781

Return to run position

Set the desired engine speed with the throttle. Allow the engine to run at a moderate speed, “half throttle” for 3-5 minutes before loading it too heavily. USE FULL THROTTLE WHEN MOWING (no choke).

If your battery is too weak to start the engine, it should be recharged. (See “Battery” in the Maintenance Section.)

8058-134

Set the engine speed

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Contents Operator Manual All rights reserved Contents Page Introduction Manufacturing Number Good ServiceXxxx xxxxxx xxxxx xxxx Xxxxxx xxxxxxxxx. xx xxxxxxxx Symbols and decalsManual Safety Safety InstructionsGeneral Operation Never take passengers Slope Operation Personal Safety EquipmentChildren Safe Handling of Gasoline General Maintenance Risk of sparking Transport Regularly clean deckControl Locations ControlsSteering Control Levers Blade Switch Parking BrakeThrottle Control Ignition Switch Choke ControlFuses Fuel Tank Cutting Height Adjuster Fuel Shut Off ValveAlways raise the deck to the highest position for transport Seat Adjustment Lever Hour MeterTracking Knob Steering TrainingStarting the Engine Before StartingSet the throttle Turn to the start position Weak Battery Jumper CablesTo remove cables, reverse order Secure selected cutting height RunningOperating On Hills Mowing Tips Disengage the mower deck and move throttle to minimum Stopping the EngineManual Transport Before After Year 100 300 MaintenanceMaintenance Schedule Daily Maintenance interval Least Hours Once EachBefore After 100 300 Daily At least Maintenance Once Interval Each Hours YearReplacing battery BatteryFuel Pump Air Filter Safety SystemTire Pressures Deck belt installation BeltsDeck Belt Cutting Blades Blade replacementLeveling deck Adjusting the Mower DeckAnti-scalp Rollers Hardware CleaningUse protective glasses when cleaning and washing Caster WheelsGeneral LubricationTransmission Front Wheel MountFront Wheel Bearings Deck SpindlesTroubleshooting Troubleshooting Service StorageWinter Storage Schematics Technical Data RZ4222F RZ4621 RZ4621 BF RZ4621 CA EngineTransmission RZ4222F RZ4621 RZ4621 BF RZ4621 CA Frame DimensionRZ4623 RZ4824F Engine RZ4623 RZ4824F Frame RZ5424 Engine RZ5424 Frame DimensionsMetric Standard Hardware Torque SpecificationsAccessories Standard HardwareUSA requirements CONForMITY CertificatesDelivery Service Service JournalAfter the First 10 Hours Hour ServicePerform the 25-hour service At Least Once Each Year Service Journal Page 115 384327R1 08/26/10

RZ4222F / 966659401, RZ4621 BF / 966676501, RZ4621, RZ4621 CA, RZ4824F / 966678301 specifications

Husqvarna has long been a leader in outdoor power equipment, and its line of zero-turn mowers epitomizes innovation and performance. Among their notable models are the Husqvarna RZ4222F, RZ4621, RZ4824F, and RZ4621 BF, each designed to offer professional-grade results for both residential and commercial users.

The Husqvarna RZ4222F (966659401) features a robust 22 HP engine, providing ample power for tackling tough mowing tasks. With a 42-inch cutting deck, it balances maneuverability and efficiency, making it ideal for medium to large lawns. The RZ4222F is equipped with a dual hydrostatic transmission, allowing for smooth operation and improved control on varied terrain. Its ergonomic design includes an adjustable seat and easy-to-reach controls, ensuring comfort during extended use.

Moving on to the Husqvarna RZ4621, this model offers a 21 HP engine paired with a 46-inch cutting deck. It incorporates a commercial-grade hydrostatic transmission, providing exceptional speed and precision. The RZ4621 is admired for its advanced cutting technology, which delivers a clean and even cut thanks to its reinforced cutting deck. Its compact design enhances maneuverability in tight spaces, making it a versatile option for any landscaping challenge.

For those requiring a more powerful machine, the Husqvarna RZ4824F (966678301) stands out with its 24 HP engine and a 48-inch cutting deck. This model harnesses premium features like a heavy-duty frame, high-speed settings, and a wide range of cutting height adjustments, ensuring optimal performance in various conditions. The RZ4824F demonstrates Husqvarna's commitment to durability, offering an impressive lifespan even under rigorous usage.

Lastly, the RZ4621 BF (966676501) integrates advanced features aimed at user convenience and efficiency. With its durable construction and powerful engine, it excels in delivering professional-grade results. The RZ4621 BF is designed with user-friendly controls and enhanced visibility, allowing operators to maintain focus on their mowing tasks.

Each of these Husqvarna mowers features a blend of innovative technologies and user-oriented design. They are equipped with maintenance-friendly features like easy-to-access oil and filter replacements, ensuring longevity and reliability. The combination of power, precision, and comfort makes the Husqvarna RZ series a favored choice among homeowners and landscaping professionals alike. Whether you need a compact model for residential use or a robust machine for commercial applications, Husqvarna's range has a solution to meet your needs, ensuring a beautiful, well-manicured lawn with every pass.
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