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Husqvarna RZ4623 46 inch 23 HP (Kohler) Zero Turn Mower

Model: RZ4623  |  Item Number: 967009802
 - 4.63 Stars - Based on 8 Review(s)
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Features for the Husqvarna RZ4623

the husqvarna rz4623 zero turn mower provides maneuverability, efficiency and convenience in a homeowner zero-turn mower package. 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 the husqvarna rz4623 easy and enjoyable to operate.

  • 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.
  • zero-turn steering system: individual, hydraulic wheel-drive provides very precise maneuvering and allows the mower to rotate around its own axis, without any turning radius.
  • high performance cutting deck: the 10-gauge stamped steel, air induction design provides premium cutting performance, particularly when mulching or collecting.
  • cutting performance: high performance stamped steel cutting deck features 3-in-1 blade design for mulch, collection and discharge capability.
  • rugged frame and casters: the robust frame and casters ensure durability and reduced chassis flex.
  • comfortable operation: convenient seat slide with spring suspension, large dampened steering levers with premium foam grip and multiple control lever adjustments for operator preference. ergonomic driver’s position with excellent overview of working area. all controls within easy access of operator.
  • adjustable steering levers: steering levers are adjustable for different size operators - ergonomically angled inward for more comfort - and dampeners can be adjusted to suit your particular style.
  • convenient control panel: convenient side mounted control panel places the choke, throttle, and ignition in one location for easy access.
  • easy-access service points: oil and filter maintenance, hydraulic drive system components/adjustment, electrical system and battery are all within easy reach so you can quickly get back to being productive.
  • removable foot pan: removable dimpled-steel foot pan for easy access to deck belt pulleys, spindles and clean-up.
  • hour meter with service minder: indicates when it's time to service your mower.
  • adjustable tracking: the easily accessible adjustment allows fine-tuning of straight line tracking without tools.

This product may contain chemicals known to the State of California to cause cancer, birth defects and other reproductive harm. For more information, go to

Technical Specs for the Husqvarna RZ4623*

Engine Manufacturer Kohler Courage
Power 23 hp
Displacement(cc) 725cc
Cylinders 2
Engine Cooling Air
Fuel Capacity 3.5 gal
Oil Filter Yes
Oil Capacity 48 fl oz

Drive System
Transmission Type Hydrostatic
Transmission Manufacturer Hydro-Gear EZT
Pump Displacement 10cc
Fan-cooled Pumps Yes
Speed Forward (min, max) 0 - 6.5 mph
Speed Reverse (min, max) 0 - 3.5 mph
Tire Size (front, rear) 11 x 4 - 5 inches, 18 x 8.5 - 8 inches
Productivity 2.4 acres/hr

Residential Warranty 3 Year Limited
Commercial Warranty N/A

Wheelbase 43.8 inches
Weight (lbs.) 580 lbs

Seat Material Vinyl
Seat Spring Yes
Seat Back Height Medium
Fuel Gauge Yes
Hour Meter Digital
Cup Holder Yes

Cutting Deck
Cutting Width 46 inches
Cutting Deck Type Stamped
Cutting Methods Collect / Mulch / Side Ejection
Cutting Deck Material Steel
Deck Thickness 13 gauge
Cutting Height (min-max) 1.5 - 4 inches
Cutting Height Steps 6
Blade Engagement Electric Clutch
Clutch Rating 90 ft lb
Blades 2
Anti-scalp Wheels 3
Deck Lift System Manual, Hand Operated
Wash Out Port Yes

Engine 4-Cycle

* These Technical Specs are provided by the manufacturer at the beginning of the model year. Please be aware that the manufacturer may decide to change these specs at any given time without notice.

Reviews for the RZ4623

Review Rating: Sort By:

Reviewed on   -   Purchased on 9/4/2013
This mower graduates you into a life of effortless and enjoyable mowing. No more almost tight turns and pushing buttons and using a back up pedal. Mowing time cut in half. Round trees and shurbs effortlessly. Why???? Did I wait so long..
Reviewed on   -   Purchased on 9/1/2013
No Comments
Reviewed on   -   Purchased on 7/30/2013
Great mower. Cuts my mowing time by 30 minutes on my 1 acre property. Recently had knee surgery and my girlfriend got right on it and started cutting like a pro. I thought she would have some trouble getting used to it but what a surprise. Easy cleanup when you are done and easy access to all the needed areas. Also great service from Jacks. One piece was missing and they shipped it right out.  
Reviewed on   -   Purchased on 8/2/2013
Great mower at a great price.
Reviewed on   -   Purchased on 5/13/2013
This is an excellent mower.  I chose the 46-inch model because I have limited space in my garage, and because I wanted the 23-inch blades.  I haven't planted grass yet since buying a home on two acres, and the weeds are tough.  My 42-inch tractor type mower required two or more passes to do a decent job in some areas.  My theory was that blades two inches longer would be moving at a higher speed at the tips, and cut better.  That proved correct with the RZ4623, because it cuts a clean path through the weeds at 6 1/2 miles per hour, without leaving anything standing. The larger mowers have three blades instead of two, and most are a lot shorter than 23-inches.
I'm 76 years old, but adapted fairly quickly to the entirely new method of guiding the mower, and I really appreciate how much faster it gets the job done in half the time.
Now the bad part of this review:  the idle pulley on the drive belt froze up after mowing my yard one time.  I am guessing this could be a problem with a parts supplier used by Husqvarna, but I haven't seen any other reports of this happening.  A Husqvarna dealer, A1 Small Engine Repair of Gainesville, Texas, picked up the mower and repaired it I'm happy say. 
The problem some reviews mentioned of the exhaust killing the grass when the mower is stopped with the engine running appears to have been solved with a new design for the muffler.  Jacks delivered the mower to North Texas very promptly.  You probably will want to pay the charge for lowering it to the ground instead of hiring a crew.     A tip, someone will want the crate, so leave it as intact as possible and put a notice in Freecycle or Craigslist to give it away.
I really like this mower.
Reviewed on   -   Purchased on 6/5/2013
No Comments
Reviewed on   -   Purchased on 4/14/2013
Nice mower for home owner beats the old craftsman  tractor hands down:-)
Reviewed on   -   Purchased on 10/3/2012

now have mowed my yard twice .  2acresw/lots of trees

the rz4623 cut my mowing time in half !

also have mulched the leaves once

love the rz4623 ,still learning to handle it

Q & A for the Husqvarna RZ4623

Ask us about the Husqvarna RZ4623 46 inch 23 HP (Kohler) Zero Turn Mower. Please no repair questions. Your Q&A may be posted to to help other shoppers, like you, with their purchasing decisions. Thank you.

Asked on 7/25/2017 9:45:16 AM by Sue
What size is the deck belt?

Sue, the deck belt 539117245 for the RZ4623 is 123" x 5/8"
Asked on 5/17/2016 4:31:21 PM by Jerry
What is recommended oil for this machine? Thanks

Jerry, the recommended oil for the Husqvarna RZ4623 with Kohler engine is  10W-30.