2013 Husqvarna RZ4621 - CARB Compliant


RZ4621 - CARB Compliant



For maneuverability, efficiency and convenience in a homeowner zero-turn mower package, the residential series really delivers. True zero-turn mower performance with twin, maintenance-free integrated transmissions, heavy-duty front casters and a rugged tube steel frame. High performance Air Induction cutting decks allow side ejection or optional mulch and collection capability. Convenient control placement, foam padded steering levers and an adjustable seat make these units easy and enjoyable to operate.

Briggs & Stratton Engine: Briggs & Stratton engines offer durability, dependable starting and the power you need to get the job done.

Air Induction Mowing Technology: Air is drawn from the top and bottom of the deck, improving grass lift and delivering a superior cut.

Maintenance-Free Transmission: Worry free performance with maintenance free, integrated zero-turn transmissions.

Water hose connection: Facilitates cleaning of the cutting deck. Attach the hose, turn on the water and start the engine and you will get a cleaner deck. For optimum results, clean the mower directly after use.

Collector accessory: Collect the grass clippings and get tidy cutting results. Collector available as accessory.

  • Engine manufacturer: Briggs & Stratton
  • Engine name: Endurance Series
  • Power: 21 hp
  • Cylinder displacement: 540 cc
  • Cylinders: 1
  • Engine cooling: Air
  • Air Filter type: Standard
  • Fuel Type: Gasoline
  • Fuel tank volume (with reserve): 3.5 gal.
  • Fuel tank location: Side (Single)
  • Engine lubrication type: Full pressure
  • Oil capacity: 48 fl oz
  • Oil filter: Included
Drive System
  • Transmission type: Hydrostatic
  • Transmission manufacturer: Hydro-Gear
  • Transmission model: EZT
  • Pump displacement: 10 cc
  • Fan-cooled pumps: Included
  • Speed forward, min-max: 0-6.5 mph
  • Speed reverse, min-max: 0-3.5 mph
Cutting Deck
  • Cutting width: 46 in.
  • Cutting deck type: Stamped
  • Cutting methods: Collect/Mulch/Side ejection
  • Cutting deck material: Steel
  • Deck thickness: 13 gauge
  • Cutting height, min-max (approximate): 1.5 - 4 in.
  • Cutting height steps: 6
  • Blade engagement: Electric clutch
  • Clutch rating: 105 ft.lb
  • Blades: 2
  • Blade-tip speed: 16600 fpm
  • Anti-scalp wheels: 3
  • Deck lifting system: Manual, hand operated
  • Powder-coated cutting deck: Included
  • Spindle/mandrel type: Aluminum, vented
  • Greasable mandrels: Included
  • Deck Wash Port: Included
  • Seat material: Vinyl
  • Seat spring: Included
  • Seat back height: Medium
  • Fuel level window: Included
  • Hour meter: Digital
  • Cup holder: Included
  • Tire size, front: 11x4-5in.
  • Tire size, rear: 18x8.5-8in.
  • Wheelbase: 41.8 in.
  • Base machine, length: 75 in.
  • Base machine, width (chute down): 56 in.
  • Base machine, width (chute up): 48 in.
  • Base machine, height: 40 in.
  • Weight: 580 lbs
  • Productivity: 2.4 acres/hr
  • Homeowner Warranty: 3 Year Limited



Engine Manufacturer
Briggs & Stratton
Horse Power
21 hp
Engine Type
Endurance Series
540 cc


Wheel Size
Front: 11 x 4-5 in.; Rear: 18 x 8.5-8 in.
Fuel Capacity
3.5 gal.


Deck Size
46 in.
Discharge Type
Side; Optional: Collect, Mulch

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