Husqvarna RZ4621 BF / 966676501, RZ5424 / 966659301, RZ4621 CA Cutting Blades, Blade replacement

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MAINTENANCE

Cutting Blades

In order to attain the best mowing effect, it is important that the blades are well sharpened and not damaged.

Bent or cracked blades or blades with large nicks should be replaced.

IMPORTANT INFORMATION

The sharpening of blades should be carried out by an authorized service workshop.

Damaged blades should be replaced when hitting obstacles that result in a breakdown. Let the service workshop decide whether the blade 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.

8011-604-1

Check the blades

Blade replacement

1.Remove blade bolt by turning counterclockwise.

2.Install new or resharpened blade with stamped “GRASS SIDE” facing towards ground/grass (down) or “THIS SIDE UP” facing deck and cutter housing.

3.Install and tighten blade bolt securely.

4.Torque blade bolt to 90 ft/lbs (122 Nm).

IMPORTANT INFORMATION Special blade bolt is heat treated. Replace with a Husqvarna bolt if required.

Do not use lower grade hardware than specified.

3

1

2

8058-027

1.Blade

2.Blade bolt (special)

3.Cutter housing

Blade attachment

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Contents Operator Manual All rights reserved Contents Page Introduction Good Service Manufacturing NumberSymbols and decals Xxxx xxxxxx xxxxx xxxx Xxxxxx xxxxxxxxx. xx xxxxxxxxManual Safety Instructions SafetyGeneral Operation Never take passengers Personal Safety Equipment Slope OperationChildren Safe Handling of Gasoline General Maintenance Risk of sparking Regularly clean deck TransportControls Control LocationsSteering Control Levers Parking Brake Blade SwitchThrottle Control Choke Control Ignition SwitchFuses Fuel Tank Fuel Shut Off Valve Cutting Height AdjusterAlways raise the deck to the highest position for transport Hour Meter Seat Adjustment LeverTracking Knob Training SteeringBefore Starting Starting the EngineSet the throttle Turn to the start position Jumper Cables Weak BatteryTo remove cables, reverse order Running Secure selected cutting heightOperating On Hills Mowing Tips Stopping the Engine Disengage the mower deck and move throttle to minimumManual Transport Maintenance Maintenance ScheduleDaily Maintenance interval Least Hours Once Each Before After Year 100 300Daily At least Maintenance Once Interval Each Hours Year Before After 100 300Battery Replacing batterySafety System Fuel Pump Air FilterTire Pressures Belts Deck belt installationDeck Belt Blade replacement Cutting BladesAdjusting the Mower Deck Leveling deckAnti-scalp Rollers Cleaning Use protective glasses when cleaning and washingCaster Wheels HardwareLubrication GeneralFront Wheel Mount Front Wheel BearingsDeck Spindles TransmissionTroubleshooting Troubleshooting Storage ServiceWinter Storage Schematics RZ4222F RZ4621 RZ4621 BF RZ4621 CA Engine Technical DataTransmission Dimension RZ4222F RZ4621 RZ4621 BF RZ4621 CA FrameRZ4623 RZ4824F Engine RZ4623 RZ4824F Frame RZ5424 Engine Dimensions RZ5424 FrameTorque Specifications AccessoriesStandard Hardware Metric Standard HardwareCONForMITY Certificates USA requirementsService Journal Delivery ServiceHour Service After the First 10 HoursPerform 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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