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Walk-Behind Aerator

One powerful, feature-packed commercial-grade machine
When it comes to walk-behind aerators, Exmark® is way ahead of the competition. Our 21-inch, transaxle-drive S-Series aerator is incredibly easy to use, thanks to straightforward controls for intuitive operation. Reaching speeds up to 4 mph, it’s capable of aerating nearly an acre per hour.

Available Models

Forward & Reverse Operation


3-Postion Adjustable Handle

Heavyweight Performance

The Key To Quality Aeration

Model Specs

Specifications for model # ARS180CKA21000

Width / Cutting Deck 21"
Rear Tires 10 x 2.75-5.5 Solid
Front Tires 11 x 4.0-4 Turf TL
Drive #40 Chain
Number of Tines 36 coring tines
Core Depth 2" to 3"
Plugs / Square Foot 4.6
Power Components
Engine Brand Kawasaki®
Engine Model FJ180
Type Carbureted
Transmission Hydro-Gear T2
Speed 4.0 mph
Fuel Capacity 1 gallon (3.8-L)
Width 31" (79 cm)
Height 52" (132 cm)
Length 61" (155 cm)
Curb Weight 350 lbs


Accessories for model # ARS180CKA21000


We have you covered. We take great pride in the quality of our products and stand behind every single one. You can view, download, or print the warranty statement for your equipment here.