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Ariens Zoom 42 (42") 20HP Zero Turn Lawn Mower

Ariens Mowers and Accessories
Model: 915159
(Based on expert analysis, manufacturer ratings and customer reviews)
4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5
71 Reviews
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  • Features
  • Specs
  • 14
  • 71
  • Articles
  • Accessories
Entry Level Lawn Mowers
Zero-Turn Mower
Surface Area
Office Building, Farm, or Parks
Hilly Terrain

Cutting Inches

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."

Premium Kohler 20HP/725cc V-Twin OHV Engine
Quiet, smooth operation and easy dependable starts
Full-pressure lubrication w/ full flow filter & bypass protection
Engine hood isolates operator from noise and heat

Hydro-Gear® EZT Fully Integrated Transmission
No shifting necessary for effortless operation
Equipped with cooling fans and large hydraulic reservoir

4-Point Deck Mount Design
42" 12-gauge stamped steel deck
17,000 feet per minute blade tip speed
4 support positions prevent excess deck movement
Delivers a better cut with less scalping
Mechanical foot lift raises & lowers mowing deck

1.5" x 1.5" Fully Welded Square Steel Frame
Produces less vibration for more comfortable operation
Rear bumper, trailer hitch sold separately
Solid steel front axle

Steering Control Dampeners
Small shocks that make the mower smoother to operate
Easier to keep a straight line and trim closer to objects

Engine Brand
Starting System
12-Volt Key Start
Engine Cycle
20 HP
725 CCs
Fuel Tank Size
2 Gallons
Engine Cylinders
2 Cylinders
Oil Filter
Consumer Engine Warranty
3 Years
Battery Included
Cutting Options
3-in-1 (Side-Discharge/Bag/Mulch)
Deck Material
Deck Construction
Spindle Material
3 Blades
Deck Positions
7 Positions
Cutting Height
1.5-4.5 Inches
Deck Lift System
Manual Foot Operated
Warner Electric
Deck Drive
Maximum Speed
Maximum Reverse Speed
Drive Wheels
Rear Wheels
Transmission Type
Drive System
Rear Bagger
Sold Separately
Engine Guard
Seat Type
High Back w/ Seat Springs
Hour Meter
Arm Rests
Sold Separately
Front Bumper
Trailer Hitch
Sold Separately
Mulcher Kit
Sold Separately
Sold Separately
Front Tire Size
11 x 4 Inch
Front Axle
Rear Tire Size
18 x 8.5 Inch
Tire Type
Pneumatic Wheels
Made in USA
440 Pounds
Product Length
64.0 Inches
Product Width
43.5 up/54.0 down Inches
Product Height
43.0 Inches
Consumer Warranty
3 Years
  14 Questions
Q: Where can I purchase arm rests for a 42" Ariens mower?
by TJ Davis from Florida on April 06, 2014

A: T.J. - unfortunately, the stock seat that comes on an Ariens Zoom42 mower is not compatible with an arm rest kit. If you really want arm rests on your Zoom42, you'll need to purchase an a new seat that has arm rests.
by Jose, Product Expert

Q: For the Ariens 42" zero turn, how many anti-scalp wheels on the front of the deck and how many on the rear of the deck?

by Joe from Virginia on August 24, 2013

A: This particular model is going to only have 4 anti-scalp wheels, you will have two in the front and two in the back. The picture from Ariens is deceiving because it is a picture of a Zoom 42", but they do not add the right anti-scalp wheel on the front for whatever reason.
by Jose, Product Expert

Q: What is the stability of this mower going up and down hills?
by Jack Voelz from Indiana on April 12, 2013

A: Jack - the Ariens Zoom 34 will mow effectively on slopes or inclines up to 17 degree's of slope. Any steeper than that and you may have traction issues, especially if the grass is wet.
by Jose, Product Expert

Q: The Ariens 42 says that it's 54 inches wide is that with the grass deflector and does that fold up to make it less. Thanks
by Sam Panasci from New York on February 20, 2012

A: Sam - yes, the overall width of 54" is with the side discharge chute cover in the down position. If you fold it up, the overall width of the mower is approx. 43-1/2".
by Jose, Product Expert

Q: What is the difference between Transaxles and hydorstatic transmition on the ZTR mowers?
by CK on July 24, 2011

A: Thanks for your inquiry.

The difference between transaxle and hydrostatic transmissions on zero turn mowers is as follows:

The transaxle has the pump and wheel motor in one case. It is belt driven.
The hydrostatic is propelled with fluid and a seperate pump. It is not belt driven.
by Jose, Product Expert

Q: Todd, if i buy this mower and something goes wrong within the 3 year warranty, how would i get it fixed?
by Joe from Connecticut on June 26, 2011

A: Joe - any needed warranty service would be provided by your local Ariens dealer. We have a link on our web site under customer service that would allow you to look up the closest Ariens service centers using your zip code.
by Jose, Product Expert

Q: I have a new 2011 Ariens Zoom 42 mower and would like to purchase a sun shade for it, but all that I have found are for 2008 or earlier model years. Is there a sun shade available for the new model?
by Gary from Ohio on June 24, 2011

A: Gary - Ariens stopped offering a sun shade for their Zoom series zero turn mowers a couple of years ago. There are a couple of after market sun shades out there that will fit on the newer Ariens Zoom models, but we do not offer one.
by Jose, Product Expert

Q: Are zero turn mowers set up to pull say a 17' dump cart for other yard work like conventional riding mowers?
by Joe from Pennsylvania on June 23, 2011

A: Joe - the maximum weight that a zero turn mower can "pull" (tow) is typically about 200 - 250 pounds. You could pull a 17 foot dump cart, which weighs about 160 lbs. You just couldn't put a whole lot of "stuff" in the cart.
by Jose, Product Expert

Q: the ariens zero turn mowers, do they have snow blowers available? and if so are they easy to mount? just trying to cut back on the number of gas engines to maintain. thanks Troy
by Troy Donth from Minnesota on June 11, 2011

A: Troy - Ariens does make a snow blower attachment that mounts to the front of their zero turn mowers. I would say the installation is moderate in terms of ease. We don't stock the snow blower attachment, but we would be able to special order it for you if you decide you want one. To be honest, the snow blower attachment is not a big seller, mostly because of the handling and traction of a zero turn mower on snow and ice. Give us a call if you want to find out more about the Ariens snow blower attachment for their zero turn mowers.
by Jose, Product Expert

Q: I've looked at this at home depot and at your competitors wise guys web site and they both have briggs and stratton as the engine your web site says a kohler why is it a different engine for the same mower?
by Christi from Texas on May 22, 2011

A: Christi - I can't comment on what our competitor's are showing on their web sites, but if you are looking at a 2011 Ariens Zoom 42 (#915159), the engine on this mower is definitely a 22hp Kohler Courage engine. The 2010 model (#915141) had a 16.5hp Briggs and Stratton engine, but this model is out of production and no longer available.
by Jose, Product Expert

Q: I have a 42" front engine tractor currently. I want to cut down mowing time on a 2/3 acre lot. Would a 42" zero turn be recommended? Would 48"+ be overkill?

by Tim L. from Wisconsin on May 17, 2011

A: Tim - for a lot that is less than 1 acre, you could probably get away with using a 32" or 34" zero turn mower and still cut your mowing time. A 42" model would be plenty big enough. Yes, a 48" model would be more mower than you need for mowing less than one acre.
by Jose, Product Expert

Q: Does this Ariens Zoom42 (42") 22HP Zero Turn Lawn Mower (2011 Model) really come with a two-cylinder Kohler engine?
Thank you!

by Alan Church from South Dakota on May 16, 2011

A: Alan - yes, the Ariens Zoom 42 features a Kohler Courage twin cylinder engine.
by Jose, Product Expert

Q: Describe how much assembly is required when this mower is shipped to me?
by Bill Moyer from Kansas on April 21, 2011

A: Thanks for your inquiry. The only assembly required is putting on the seat. Then you just have to gas , oil and go!!
by Jose, Product Expert

Q: Todd, what is the overall length and width of the 42" machine?
by Hollis Earnest from Illinois on March 24, 2011

A: Thanks for your inquiry. The overall length of this model is 64 inches. The overall width of this model is 54 inches.
by Jose, Product Expert

Ariens 915159 Reviews & Ratings
Overall Rating
4.5 out of 54.5 out of 54.5 out of 54.5 out of 54.5 out of 5
Price (16)
High Quality (12)
I'd Buy It Again (10)
Easy To Use (7)
Exceeded Expectations (6)
Low Quality (3)
Packaging (2)
Difficult To Use (2)
Durability (2)
Unreliable (2)
82% of respondents would recommend this product to a friend
71 Reviews  Sort by 
Laura M.
Wilmington, DE
Most Helpful Critical Review
1 out of 51 out of 51 out of 51 out of 51 out of 5
This Is The Worst Mower Ever
This mower is a waste of money. The kill switch does not allow the motor to start, even when sitting in the seat. The belts broke the first summer. There was a gas cap from the manufacturer that didn't belong to our mower embedded in the belts. Finally customer service is unfriendly and unhelpful. I don't normally write reviews, but this mower is so bad I was driven to write this. Run the other way.
Cons: Low Quality, Unreliable, Durability, Kill switch causes the motor to not start.
Laura Does Not Recommend This Mower
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Chesapeake, VA
5 out of 55 out of 55 out of 55 out of 55 out of 5
Love The Mower Hate The Mulch Kit
I purchased an Ariens Zoom 42 from a big box store and the mulch kit from mowers direct. After installing the mulch kit (which requires jacking up the mower and removing the blades - a real pain BTW), I experienced a trail of grass about 2 inches wide trailing from the mower, especially when mowing in a circle (i.e., around trees) . When shopping for the mulch kit, Ariens told me the kit needed an additional part (51522800) which basically are foam block inserts to block the grass leaking... more
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Purchased from Mowers Direct
Purchased 7/22/12
Total Helpful Votes
38 Helpful Votes
4 out of 54 out of 54 out of 54 out of 54 out of 5
Overall, I'm Satisfied
I spent a couple of weeks searching for a 42" mower for my acre and half yard. Decided on this Ariens over the Toro time cutter SS.

The Toro looks very cheap to me. I paid by check, it took longer, but I saved 50 or so bucks. Get the lift gate service- you can't unload the mower without it. The mower came in an 18-wheeler, packaged well on 2 pallets. It was very hard to get off the pallets. I got aggravated and lifted mower off pallets completely after busting up my thumb trying to... more
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Conway, AR
Purchased from Mowers Direct
Purchased 8/26/12
Total Helpful Votes
25 Helpful Votes
4 out of 54 out of 54 out of 54 out of 54 out of 5
Mixed Review
OK- I had purchased a 40" Ariens Zoom back in 2002, used it for 10 years on a large residential lot until it bit the dirt. I reluctantly went to my local big-box hardware store and bought a Husqvarna zero-turn model and HATED IT! It wasn't even comparable to the Ariens I had before, even though it cost about the same, had a bigger cutting radius and looked like a good unit. I put 10 hours on the yellow H bug and sold it at a loss. Ugh...

Then, I happily found Mowers Direct and was... more
Jose, the Lawn Mower Expert
Product Expert
We'll use the Service Locator on our web site to direct you to the closest Warranty Service location, and email it to you through your account.

We're sorry for the delay on our phones; since we also sell generators we've been swamped with calls from Hurricane Sandy survivors.
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Jerry B.
Lawrence, KS
Purchased from Mowers Direct
Purchased 3/16/15
Total Helpful Votes
21 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Ariens Zoom 42" Zero Turn
I have just used the mower a couple of times, I'm getting the beginners learning moments usage, I really like what little mowing I've done, I have lived in this house for 34 years, and always had a nice lawn.

The lawn now looks better cut than it ever has, this mower deck with the support design is great, The cut is flat all over the lawn. I have had good comments from several people. I installed the mulching kit, and it worked great.

I think I will keep it. Wish I had purchased... more
Pros: Price, High Quality, I'd Buy It Again, Exceeded Expectations
Jerry Recommends This Ariens Mower
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Stephen N.
New Palestine, IN
Purchased from Mowers Direct
Purchased 5/20/13
Total Helpful Votes
22 Helpful Votes
4 out of 54 out of 54 out of 54 out of 54 out of 5
Major Problem
This is a nice mower but it has one major problem. If you sit in one spot for more than 5 seconds, the exhaust and heat from the muffler burn the grass. It takes a couple of days for the grass to turn brown and then you can see the outline of the muffler and where the exhaust discharged. This mower definitely needs a heat shield around the muffler.
Pros: Easy To Use
Cons: Needs A Muffler Heat Shield
Stephen Does Not Recommend This Mower
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John S.
Baton Rouge, LA
Purchased from Mowers Direct
Purchased 2/7/15
Total Helpful Votes
18 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Ariens Zoom 42 Inch Ztr Model 915159 Mower
Did lots and lots of research on all 42 inch ZTR mowers made. Although they all cut your grass, some just do a better job than others. I visited places that sold different makes and models of mowers that fell into the price that I wanted to pay.

I looked at things like quality of materials used, workmanship, company past history and reviews of person that has owned and used the mower. I paid attention to weather it had two cutting blades or three. I definitely had to have one with three... more
John Recommends This Ariens Mower
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Walter K.
Ramsey, NJ
Total Helpful Votes
14 Helpful Votes
2 out of 52 out of 52 out of 52 out of 52 out of 5
Superintendent Of Small Cemetery
Good little mower. We bought this model for cutting between the head stones-cuts well. HOWEVER lately after about 60 hours of mowing the blade spindle bearings are "whining"- indicating they are in need of replacement. We have 3 other brands of zero turn mowers and they ALL have grease fittings for lubricating the spindles ALAS this model does not have fittings so no regular "preventative" maintenance is available. We purchased this model at a Home Depot early this... more
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Sandra C.
Chadbourn, NC
Purchased from Mowers Direct
Purchased 3/19/13
Total Helpful Votes
15 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Love My Mower
So far I have only used my mower once, but I love it, came fast, had it on the grass in a few hours, all u do is cut off the wooden pallets, put gas in the tank and she will fire right up. I was only missing one screw for the handle bars. Mowers Direct is great, good prices, no taxes, no shipping and even save money if you send a check. I was not too happy about paying a lift fee, but by writing a check for full payment the cash back was my lift fee charge. I will by direct again in future... more
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Total Helpful Votes
19 Helpful Votes
1 out of 51 out of 51 out of 51 out of 51 out of 5
Keeps Cutting Off
This machine has been in the shop 5 times this year. I have owned this machine for two year's.
Pros: A Waste Of Money
Cons: Low Quality, Unreliable
Lois Does Not Recommend This Mower
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Larry B.
Fort Gibson, OK
Purchased from Mowers Direct
Purchased 5/22/13
Total Helpful Votes
14 Helpful Votes
5 out of 55 out of 55 out of 55 out of 55 out of 5
Very Good Machine, Cuts Very Well And Easy.
The truck dropped it off at 9:30 AM, at 10:20 I started it and took my first ride. Some advise, don't try to take the crate apart. Get a recip. saw and cut the crate off in pieces, pull both bypass levers out and lock in place, then push the machine off the pallet by hand. Piece of cake.
Pros: Durable, Easy To Use, Features, Price
Larry Recommends This Ariens Mower
Larry's Experience With Mowers Direct
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