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Commercial 21 S-Series

“S” as in Simple.
They say simplicity is the basis of great engineering. And it doesn’t get much simpler than the Exmark® Commercial 21 S-Series, beginning with its patented front height adjustment. This straightforward design makes conventional pivot-style adjusters obsolete. There are zero grease points and less than half the parts of other mowers in its class. That makes servicing the S-Series almost as easy as it gets. Then there’s the single-speed transmission, simplified bail system, single-point rear height adjust, the innovative blade design that makes it easy to go from mulching to bagging the list goes on and on. Just like the mower.

Available Models

Multi-Purpose Blade

Variable-Speed Transmission

The Exmark Signature Cut

Easy On/Off Bag Design

Patented Front Height Adjustment

Bag Capacity

Model Specs


Specifications for model # ECS180GKA21000

Equipment
Drive Tires 9" x 2.5", semi-pneumatic.
Safety Package Zone start
Power Components
Engine Model FJ180V
Engine Brand Kawasaki®
Engine Series FJ
Engine Speed 3,300 rpm
Air Filter Dual element air cleaner
Drive Description Self-propelled; rear-wheel gear-driven.
Speed 0.0 mph to 4.2 mph (6.6 kmph) forward.
Fuel Capacity 2 quart integral fuel tank
Engine Type Carbureted
Engine Displacement 179
Drive Belt-Drive
Fuel Indicator None
Carb Compliant No
Fuel Type Gas Carbureted
Decks
Deck Style Fixed Deck
Deck Style Description Fixed deck, Rear -discharge bagger standard with option to mulch.
Width / Cutting Deck 21"
Deck Construction 5" deep, 1/4"-thick die-cast aluminum.
Cutting Heights 1.0" (2.5 cm) to 4.5" (11.4 cm) in 0.5" (1.3 cm) increments.
Blade Tip Speed Approximately 18,500 fpm.
Bag Capacity 2.5 bushels (20 gallons).
Blades 1 Blade at 20.5" Length
Dimensions
Width 22 in. (55.9 cm)
Length 62 in. (157.5 cm)
Height 38 in. (96.5 cm)
Curb Weight 112

Accessories


Bail

Part# 109-8442

Coated Bail OPC/BBC

Door Handle Kit

Part# 109-9326

Door Handle Kit

Commercial 21 9.5" Diameter Wheels

Part# 109-9328

For extended cut height, tough terrain, or when reduced rolling resistance is needed, this larger-diameter wheel kit improves your productivity.

Commercial 21 Deck Wear Kit

Part# 109-9329

Prolong the life of your deck in the toughest conditions with this heavy-duty deck wear kit.

Commercial 21 Wheel Weight Kit

Part# 109-9331

Enhance your productivity in wet conditions. Each wheel plate weighs 3 pounds to give you excellent performance, even with a full load?of grass.

Commercial 21 Gas Tank

Part# 109-9333

Maximize your mowing with increased fuel capacity. The 1-gallon gas tank fits easily onto your engine to provide optimum productivity. Available for ECSKA21 model.

Commercial 21 Mulch Plug

Part# 116-0251

Quick and easily transition from bagging to mulching by simply inserting the mulch plug in the discharge chute without the use of tools.

Commercial 21 Engine Guard

Part# 116-0522

Protect your engine from impact when mowing round low-hanging branches and other obstacles.

Coated Bail

Part# 116-7907

Coated Bail OPC/BBC

Warranty


Reviews


REVIEW SNAPSHOT®

by PowerReviews
ExmarkCommercial 21 S-Series
 
3.3

(based on 6 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (2)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (2)

67%

of respondents would recommend this to a friend.

Pros

  • Heavy duty construction (4)
  • Cut quality (3)
  • Ease of use (3)
  • Engine performance / brand (3)

Cons

No Cons

Best Uses

  • Professional / commercial mowing (4)
  • Small lawns (less than 1 acre) (4)
    • Engine Brand?:
    • Kawasaki (4)
    • Deck Size?:
    • 21" (5)
    • Personal or Professional Use?:
    • Professional (4)

Reviewed by 6 customers

Displaying reviews 1-6

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5.0

Best mower ever

By 

from Lexigton, NC

About Me Landscape Professional

Verified Buyer

Pros

  • Cut Quality
  • Engine Performance / Brand
  • Heavy Duty Construction

Cons

    Best Uses

    • Professional / Commercial Mowing

    Comments about Exmark Commercial 21 S-Series:

    This mower has the HP to mulch tall grass from all the rain this spring.

    (1 of 1 customers found this review helpful)

     
    1.0

    Mower runs well cuts great aluminum deck rotted

    By 

    from New orleans la

    Verified Reviewer

    Pros

    • Cut Quality

    Cons

    • Poor Construction

    Best Uses

    • Residential Mowing
    • Small Lawns (Less than 1 acre)

    Comments about Exmark Commercial 21 S-Series:

    Poor design for mulching deck rotted near mulching plug.

    (1 of 1 customers found this review helpful)

     
    5.0

    I would buy this product again.

    By 

    from Loganville, GA

    About Me Landscape Professional

    Verified Buyer

    Pros

    • Cut Quality
    • Ease of Maintenance
    • Ease of Use
    • Heavy Duty Construction
    • Steering / Controllability

    Cons

      Best Uses

      • Bagging
      • Mulching
      • Professional / Commercial Mowing
      • Small Lawns (Less than 1 acre)
      • Striping

      Comments about Exmark Commercial 21 S-Series:

      Great product.

      (1 of 1 customers found this review helpful)

       
      4.0

      very well built machine. Should last us for years.

      By 

      from New Canaan Connecticut

      About Me Grounds Manager

      Verified Buyer

      Pros

      • Availability & Performance of Accessories
      • Ease of Maintenance
      • Ease of Use
      • Engine Performance / Brand
      • Heavy Duty Construction
      • Styling / Appearance

      Cons

      • Poor Cut Quality

      Best Uses

      • Professional / Commercial Mowing
      • Small Lawns (Less than 1 acre)

      Comments about Exmark Commercial 21 S-Series:

      everything is great with machine, just quality of cut. Seems to always leave a little grass uncut, have to go over areas twice.

      (1 of 1 customers found this review helpful)

       
      4.0

      It's built like a tank, and really fast. Not quite perfect.

      By 

      from Fairlawn, OH

      About Me Homeowner

      Verified Reviewer

      Pros

      • Availability & Performance of Accessories
      • Comfort & Ergonomics
      • Ease of Use
      • Engine Performance / Brand
      • Heavy Duty Construction
      • Speed
      • Steering / Controllability
      • Styling / Appearance

      Cons

      • Poor Cut Quality
      • Poor Fuel Efficiency

      Best Uses

      • Mulching
      • Professional / Commercial Mowing
      • Residential Mowing
      • Small Lawns (Less than 1 acre)

      Comments about Exmark Commercial 21 S-Series:

      I am a homeowner who maintains two 1/4 acre lots and several other small nearby yards (vacants/elderly). My own grass gets very thick and tall during the rainy spring season and becomes nearly impossible to cut with a consumer-type push mower. Decided on the Exmark based on recommendations from lawn service pros. Chose the S-series because I did not need all the extra features of the X-series.

      This mower is built like a tank and is definitely the most substantial piece of outdoor power equipment I own. The rubber tires provide awesome traction in all conditions. It's heavy, bulky, and it feels great to operate.

      I would prefer a side discharge feature instead of bagging. I have never once bagged grass clippings and it just seems like nonsense to do so. The ability to open a discharge chute while cutting tall/thick grass would be much more valuable to me than the option to bag.

      I am less-than-impressed with the cut quality. Perhaps it's just the blade design, but it misses a lot of pieces of grass in each pass. It gets worse as the cutting height is raised, and I do cut fairly high (3.5 to 4"). The cut improved after I installed the mulch plug, but honestly my old Craftsman was more precise.

      The engine runs very strong, and starts on the first pull every time. It does emit a puff of white smoke upon startup after it has not been run in a week or two. I'm not sure if there is a problem with my engine, or if this is just a typical behavior of the FJ180V.

      Also, when it starts to get low on gas (1/4 tank or so), the engine starts to sputter and miss instead of running until the last drop of fuel is gone like other mowers do. I find that annoying, because I can't quite finish the yard on 3/4 tank.

      These three reasons (cut quality, puff of smoke, and low fuel issue) are why I cannot give it the full 5 stars.

      I have so much more to say, but these reviews have a character limit. I do recommend the product, though it does come with a few frustrations.

      Service and delivery comments:

      I ordered the mower from an Exmark dealer 40 mins away. I have no serious complaints about the professionalism of the shop or its staff but it was very inconvenient that they wouldn't take a credit card over the phone for payment. In order to actually get the mower ordered, I had to ask my father-in-law to drive to the shop to pay since I couldn't get there in person during business hours. The tech who gave me the "grand tour" of my new purchase was friendly and knowledgeable.

      (18 of 33 customers found this review helpful)

       
      1.0

      A waste

      By 

      from St. Louis

      Comments about Exmark Commercial 21 S-Series:

      The rattiest cut I have ever seen in a professional mower. The problem has to be the blade. My 12 year old Honda is a much better machine.

      Displaying reviews 1-6

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