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The Ariens classic lm21sw (21") 6-hp kawasaki self-propelled lawn mower w/ swivel wheels has been discontinued and is not available for purchase at this time.

Mowers Direct

Ariens Classic LM21SW (21") 6-HP Kawasaki Self-Propelled Lawn Mower w/ Swivel Wheels

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Ariens Mowers and AccessoriesModel: 911184
(Based on expert analysis, manufacturer ratings and customer reviews)
4.0 out of 54.0 out of 54.0 out of 54.0 out of 54.0 out of 5
29 Reviews
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  • Features
  • Specs
  • 9
    Q&A 
  • 29
    Reviews
  • Articles
  • Accessories
Grade
Mid Grade Lawn Mowers
Style
Self-Propelled Lawn Mowers
Surface Area
Medium Home
Medium
Terrain
Hilly Terrain
Hilly
Width
21

Cutting Inches
Engine


Product Video Disclaimer: "PED is not responsible for any variances from the product in this video and the item you purchase. Please review all product specs prior to purchase."

Video References A Kohler Or Honda Engine As Options
This model is only available in 2011 with a Kawasaki Engine

6HP/179cc Kawasaki FJ180V 4-Cycle Engine
Durable and reliable for years of service

Swivel Front Wheel Design With Tool-Free Height Adjustment
Easily manuever around trees and borders
Dial in one of six cutting heights for a manicured look

21 Inch Steel Deck With Baked On, Powder Coated Finish
Resists the effects of moisture, fertilizers, & chemicals
14 gauge stamped steel deck for added durability & airflow

Ergonomic Design Is Easy To Operate
Comfortable twin bail handle design
4 position handle bar accomodates any user
Handle folds down for compact storage

Large 2.5 Bushel Bagger
High lift blade maximizes bagging efficiency
Wire bagger frame is easy to empty and attach
Bagger holds 3 cubic feet of clippings


Need Help? Ask Our Mower Experts.
Engine
Engine Brand
Kawasaki FJ180V
Starting System
Recoil Start
Engine Cycle
4-Cycle
HP
6 HP
CC
179 CCs
Fuel Tank Size
0.53 Gallons
Engine Cylinders
1 Cylinder
Consumer Engine Warranty
3 Years
Deck
Cutting Options
3-in-1 (Side-Discharge/Bag/Mulch)
Deck Material
14-Gauge
Deck Construction
Stamped
Spindle Material
Steel
Blades
1 Blade
Deck Positions
6 Positions
Cutting Height
1-3.25 Inches
Drive
Speeds
Variable
Maximum Speed
4 MPH
Drive Wheels
Rear Wheels
Drive System
Disc-O-Matic
Accessories
Rear Bagger
Included
Hour Meter
No
Mulcher Kit
Included
Headlights
No
Wheels
Front Tire Size
7.5 Inch
Front Axle
Swivel
Rear Tire Size
10.5 Inch
Tire Type
Plastic Wheels
Overview
Made in USA
Yes
Weight
121 Pounds
Product Length
61.5 Inches
Product Width
23 Inches
Product Height
38 Inches
Consumer Warranty
3 Years
UPC
751058029887
Model
911184
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Need Help? Ask Our Mower Experts.
View Accessories For This Product.
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How-To Library
  9 Questions
Q: i have a ariens classic walk behind lawn mower with swivel wheels... for mulching do i need the mulching kit or do i just need a differant blade than what came with it????

thanks for the answer

by Steve Hughes from Minnesota on June 28, 2011

A: Steve - in order to mulch effectively, you would need either the mulching plug AND a mulching blade or the mulching kit. Most people find the mulching plug and a mulching blade to be very effective. Ariens Mulch Plug Simply installing a mulch blade will mulch the grass, but you will still leave clumps of grass on your lawn, especially if the grass is wet or thicker or longer than normal.
by Jose, Product Expert

Q: Todd, this mower was "handed down" to me with no operating instructions. Runs great, however, I want to be sure I'm adjusting height correctly. Is it necessary to move the swivel wheels or do you just control the height by the back wheels? Mows the lawn beautifully!
by Jessica from Minnesota on June 28, 2011

A: Jessica - you would need to adjust the height on both the front swivel wheels as well as the back wheels. The front swivel wheels are adjusted using height adjuster pin.
by Jose, Product Expert

Q: HI, is there a drive shaft protection system designed within the Ariens mower to ensure the integrity of the mtor shaft should one strike a hidden object in tall grass?
by Allan Brady from Virginia on May 22, 2011

A: Allan - no, there is no such system on any of the Ariens mower models. If you should strike a solid object in high grass, chances are you will damage or bend the mower blade drive shaft.
by Jose, Product Expert

Q: Does the Ariens 21 in. Classic Walk Behind Lawnmower Lawn Dethatcher Kit Mount on the Ariens Classic LM21SW (21") 6-HP Self-Propelled Lawn Mower w/ Swivel Wheels or just fixed axle?
by Chase Harris from Washington on May 15, 2011

A: Chase - the dethatcher kit WILL NOT work on an Ariens Classic with the swivel front wheels.
by Jose, Product Expert

Q: Is the ariens classic LM21SW 50 state compiant or CARB or CA certified? Does it have a wash out port?
by Michele Curtis from Texas on April 11, 2011

A: Thanks for your inquiry. This model is CARB compliant and does not have a wash out port.
by Jose, Product Expert

Q: Does the ariens classic LM21SW have a commercial warranty?
by Aleister Pettijohn from California on April 08, 2011

A: Thanks for your inquiry. This mower only has a 3 year consumer warranty. No commercial warranty.
by Jose, Product Expert

Q: Does the Ariens come with an electric start?
by Allan from Washington on April 02, 2011

A: Thanks for your inquiry. This model is not equipped with electric start.
by Jose, Product Expert

Q: Does theAriens Classic LM21SW (21") 6-HP Self-Propelled Lawn Mower w/ Swivel Wheels have a blade stop feature, to stop the blade without shutting down the engine?
by Roy Redford from Utah on March 25, 2011

A: Thanks for your inquiry. This mower is not equipped with a blade stop feature.
by Jose, Product Expert

Q: Todd, I just bought a home on appox. 1/3 acres. It's a corner lot with mature trees and some plantings. I want a self propelled push mower and am willing to spend about $600 +/-. After reading reviews I like the ariens lm21sw and I can get it locally for$639. I also found some snappers that I really like. What's your take. I expect to be here for a long time. Thanks, Mark S.
by Mark Slaughter from Illinois on March 19, 2011

A: Thanks for your inquiry. This mower would be a great choice for your application. It is one of our higher level mowers and will give you years of great performance and durability.
by Jose, Product Expert

Ariens 911184 Reviews & Ratings
29 Reviews  Sort by 
 
Andy D.
Willoughby, OH
Most Helpful Critical Review
REVIEWED
OCT.
29
2016
2 out of 52 out of 52 out of 52 out of 52 out of 5
Third Owner In The Family (handed Down)
My brother in law was fed up with trying to get it started, he stated that he took it to the shop and they fix it, it would work for a while then start getting difficult to start again. He gave it to me because I know how to trouble shoot and figure things out.

I got it running but I notice that you have to prime the hell out of it, for it to start. Why does this lawnmower difficult to start, he stated that it's been that way since his dad bought it.

What can be the problem?
Andy Does Not Recommend This Mower
Manufacturer Response
Brand Rep
Andy,
We're sorry to hear that you and your family have had problems starting this machine. It is difficult to determine exactly what is causing this hard start condition with out further inspection for diagnosis. There could be several things causing this condition including fuel related issues. We would suggest getting the machine back to an authorized Ariens servicing dealer near you for further inspection, diagnosis, and repair. They should also be able to help you understand what's causing the issue as well as advise how to prevent it in the future (if possible). If you would like further assistance in self diagnosing, feel free to use our Customer Support Site Thank you for your patience and understanding!
Tyler K
Ariens Company
more
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John L.
Escanaba, MI
REVIEWED
SEP.
27
2015
5 out of 55 out of 55 out of 55 out of 55 out of 5
Very Pleased
I purchased the LM 21S this spring to replace a much older, well used Ariens. As many have said, it is on the heavy side but not a problem. The Kawasaki engine has plenty of power and works well in tall, wet grass. It always starts with one pull and is by far one of the best mowers I've ever owned.
John Recommends This Ariens Mower
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00
Rich V.
North Port, FL
Purchased from Mowers Direct
Purchased 8/3/12
REVIEWED
SEP.
14
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Ariens Self Prop Push Mower With Swivel Wheels
Well I knew I needed bigger wheels to make it easier to go thru St Augustine's Vine grass, so I got rid of my older Toro which worked great for many years, and bought this one. No regrets as I made the right decision.

The only weak area is the pivot pin for locking the one front swivel wheel during embankment situations, which I do not use. The pin popped off when I took it out of the card board box from the shipping truck.

The Kawasaki engine is strong and the mower seems to be... more
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00
Dennis
Purchased from Mowers Direct
Purchased 8/5/12
Total Reviews
2 Reviews
REVIEWED
AUG.
27
2012
2 out of 52 out of 52 out of 52 out of 52 out of 5
Tank!
This mower is built like a tank. It's built well, cuts nice but is very heavy and does NOT do hills at all. Basically this mower is great for large, very flat lawns.
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00
Bill
Purchased from Mowers Direct
Purchased 8/3/12
REVIEWED
AUG.
24
2012
3 out of 53 out of 53 out of 53 out of 53 out of 5
Good Lawn Mower
We lost our "yard guy"... he just stopped showing up & answering phone calls. So I got this mower based on all of the recommendations. It's OK.

I don't know that the front "turning wheels" are worth the extra money. but it's a good lawn mower.

Delivery was fast. but all-in-all a self-propelled mower is just that... a way to sweat your butt off.
Jose, the Lawn Mower Expert
Product Expert
Bill,
The swivel wheels make it easier to maneuver around trees and plantings; if you don't have those interruptions in your yard you may not notice much difference.
more
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00
Warren
Montgomery, AL
Purchased from Mowers Direct
Purchased 7/23/12
REVIEWED
AUG.
16
2012
1 out of 51 out of 51 out of 51 out of 51 out of 5
Heavy Duty
This lawnmower is one heavy machine. First problem I encountered was that on an incline the swivel wheels always severely go downhill which leads to a very uneven cut. I ordered the wheel kit for fixed position wheels and it took care of that problem. The problem now is that the wheels leave tracks because the mower is so heavy and the wheels tend to did in.The mower is hard to maneuver and will take someone who is very strong to comfortably operate. I will gladly sell mine, used three times,... more
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Bill S.
Clearwater, FL
Purchased from Mowers Direct
Purchased 4/16/12
REVIEWED
MAY.
08
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Ariens
Would like to see a different 'wheel drive control,' lever option, one that you could hold with just your R hand while maintaining the other 'engine blade control' lever with your L, instead of pinching fingers or accidently releasing the 'engine' stop lever. Simple solution, and was very much disappointed not to have Ariens think of it.

My second Swivel Wheel mower, why this is not more (or most) popular over the front straight axle style is beyond comprehension.

It is so much easier to... more
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00
Guy C.
Memphis, TN
Purchased from Mowers Direct
Purchased 9/16/11
REVIEWED
MAY.
05
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Wow
This is my first Ariens mower and what a great purchase it was. The one pull start was as easy as a stroke with a pool cue. If you ever going to consider a up scale mower, do yourself a favor and get one with swivel wheels. The swivel wheels give you a zero turning radius with your mower that makes all the difference in the world. The self propelled feature allows ease of use the mower with speeds up to 4 MPH and at that speed, you better have roller skates on. Plus on hills like my lawn... more
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00
Dick C.
Knoxville, TN
Purchased from Mowers Direct
Purchased 3/31/12
REVIEWED
APR.
23
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
One Great Mower
My new Ariens self propelled walk-behind mower is everything I expected and more...from it's zero turn ability with swivel wheels...an adjustable drive system that helps me up steep inclines, which I face while cutting my lawn, here in East Tennessee...a powerful Kawasaki engine and a great bagging system...not to mention the ergonomic shape of the controls...it has made my life a bit easier and I actually look forward to using it.

The delivery was as promised, within four days of shipment,... more
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00
Kim G.
Plainfield, IL
REVIEWED
APR.
04
2012
5 out of 55 out of 55 out of 55 out of 55 out of 5
Mower Is Excellent, But There Was A Shipping Issue
I received the mower, but was unable to pull the cord to start the engine. The engine was frozen. After several tries, the motor did eventually start, with a great deal of white smoke coming out of the exhaust. The oil, which was added to the engine before shipment, smelled of gas after I put gas in to initially start the engine. I called a local Ariens repair agent. His thoughts were that the mower had been stored at some point in time on it's side (when shipped, the box itself is not to... more
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00
Edward
Mustang, OK
REVIEWED
MAR.
30
2012
1 out of 51 out of 51 out of 51 out of 51 out of 5
Butch Oklahoma
I'm sorry i bought it!!
my biggests complaints, the throttle control does not set. As you are cutting, you end up running behind it useing the swivel wheel lock, stay away from fence's etc..., one good bump and you have to replace the pin-lockout and roll pin. My advice don't use it, the front wheels fall's off. Stay away from edging around flower beds. You will have to replace your rear tires at least twice
a year. (cheap tires ).
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