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4.2 out of 5 stars. 644 reviews
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Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine

4.2

(644 Reviews)

|

Item # 167659199

$479.99
A woman outside with a dog
A woman outside with a dog

Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine

Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine

Item # 167659199

Stocked & Ready
Earthquake Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine
Earthquake Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine
$479.99
or
or

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This Item cannot be shipped to CA.
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Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine

Item # 167659199

Stocked & Ready
Earthquake Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine
Earthquake Earthquake 22 in. Gas-Powered Walk-Behind String Mower, 160cc Viper Engine
$479.99
or
or
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$40/mo.†  suggested payments with 12 Months Financing or earn $23 in Rewards+ on this purchase.

Add this item to unlock free delivery!

Shopping at

Grassland (franklin) TN

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This Item cannot be shipped to CA.
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The Earthquake Walk Behind String Mower, powered by a 160cc 4-Cycle Viper engine with, is the perfect all-terrain tool for making short work of your trimming and brush clearing tasks. In contrast to push mowers or hand-held trimmers, the Earthquake String Mower is designed to help you go where mowers can't while eliminating the back strain associated with carrying heavy equipment all around the yard. Built-tough features like a one-piece steel deck and heavy-duty nylon line ensure continuous results and make the experience of slicing through weeds and dense foliage quick, easy, and satisfying. In addition to being tough, this unit is also convenient, utilizing large diameter, extra wide wheels to keep you coasting around your property over uneven terrain and through thick grass and weeds. An integrated clutch and hand bail system safely keeps the String Mower motor running, but disengages and stops the trimmer head if you need to clear debris, eliminating the need to re-start your motor each time. When the job is complete, you simply wheel the unit back to the garage and fold down the handlebars for easier storage. Backed by a 5-year product warranty, US-based customer service, this product is built to perform. 5-Year Limited Warranty

For additional information on this product, please see the Product Documents section for all downloadable user manuals, installation guides, brochures and warranty statements.

  • POWERFUL - Powered by a strong, 160cc 4-Cycle Viper engine. The Earthquake Walk Behind String Mower chops down your unsightly weeds and stubborn brush with ease. The large 14-inch wheels allow you to float through thick grass, weeds, brush, nettles, and other foliage too difficult for push mowers to overcome.
  • DURABLE - Our one-piece steel deck provides strength and stability while reducing vibration. Super tough nylon line has a cutting swath of 22 to get the job done quickly.
  • CONVENIENT- Never-go-flat wheels ensure that your equipment is ready to go when you are. An integrated clutch and hand bail system safely keeps the String Mower motor running, but disengages and stops the trimmer head if you need to clear debris, eliminating the need to re-start your motor each time.
  • OUT-OF-THE-BOX: The setup is super simple with virtually zero assembly required. Simply unfold and tighten the tool-less handlebar knobs. Also included in the box are starter strings for the mower head and 4 cycle engine oil.
  • WARRANTY AND SERVICE: Earthquake is committed to providing a great product and an even better user experience which is why the Earthquake Walk Behind String Mower is backed by a 5-year limited warranty.

Q&As

1 - 10 of 114 Questions

Q: Can it also work on sloped terrain without releasing too much smoke?

9 days ago
1 Answer
  • A: You can use the string mower on a sloped terrain however the engine should never be at a steep vertical or horizontal angle.
    8 days ago
    Helpful?

Q: What length string does it use

22 days ago
1 Answer
  • A: Our gas engine sting mowers that have our standard cutting head use a 21.25 inch string. The Hurricane head model uses a 27 in string. Here is the link. https://www.getearthquake.com/collections/string-mowers
    21 days ago
    Helpful?

Q: What grade of fuel and oil is recommended?

22 days ago
1 Answer
  • A: A minimum of 87 octane no ethanol fuel. Oil is a standard 10w30.
    21 days ago
    Helpful?

Q: How big is the box that it comes in?

27 days ago
1 Answer
  • A: 35" x 22" x 21"
    26 days ago
    Helpful?

Q: What is the minimum cutting height?

27 days ago
1 Answer
  • AI-generated, Human-approved
    A: The minimum cutting height for this string mower is 1-1/2 inches. You can adjust the height from 1-1/2 inches up to 3 inches, with 2 inches being the recommended setting for an average yard.
    25 days ago
    Helpful?

Q: What is replacement string trimmer line

27 days ago
1 Answer
  • A: Our part number is 21884, that package has 24 lines in it that are 0.155" Diameter & 21.25" Long. The feature a Twisted Profile made from high-density nylon.
    25 days ago
    Helpful?

Q: can you put a blade on the trimmer head

a month ago
1 Answer
  • AI-generated, Human-approved
    A: No, a brush blade is not listed as a compatible accessory for this model. It is designed to use the recommended string trimmer line, and using only approved replacement parts is recommended to ensure safe operation.
    a month ago
    Helpful?

Q: Can you use a blade instead of string for thicker stalks

a month ago
1 Answer
  • AI-generated, Human-approved
    A: No, this mower relies on a flexible nylon string rather than a metal blade. It is designed to cut through woody-stemmed weeds up to 1/4 inch in diameter using heavy-duty 0.155-inch nylon line, but attempting to use it on thicker, rigid saplings will snap or melt the line.
    a month ago
    Helpful?

Q: Can you install a brush blade on this model

a month ago
1 Answer
  • A: The Earthquake 22 in. Walk-Behind String Mower is designed to use the recommended string trimmer line, and a brush blade is not listed as a compatible accessory for this model. We recommend using only attachments and replacement parts approved by Earthquake to ensure safe operation and proper fit. For additional attachment compatibility questions, please contact Earthquake customer support.
    a month ago
    Helpful?

Q: Is a maintenance kit offered for this product?

a month ago
1 Answer
  • A: A maintenance kit specifically for the Earthquake 22 in. Walk-Behind String Mower is not listed as an available accessory. For routine maintenance, we recommend following the maintenance schedule in the owner's manual and using the recommended replacement parts and fluids specified by Earthquake. For additional parts availability, you may also contact Earthquake customer support.
    a month ago
    Helpful?
1 - 10 of 114 Questions

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Reviews

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433 reviews with 5 stars.
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41 reviews with 3 stars.
18 reviews with 2 stars.
66 reviews with 1 star.

Overall Rating

4.2
241 out of 291 (83%) reviewers recommend this product

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1 to 4 of 644 Reviews .
1 – 4 of 644 Reviews
Colorado
Review 1

Avoid like the plauge

3 days ago
I bought the String mower a year ago. They use a cheap nylon idler pulley which chipped and cut the drive belt belt. I have been trying to get a replacement pulley for three months and it is still on backorder. So I am out $80 For the belt and pulley and still waiting for the pulley to arrive from Vietnam. Wish I had bought a DR mower.

No, I do not recommend this product.

Review 1

Skip it not reliable

4 days ago
Worked for one hour and then would not restart.

No, I do not recommend this product.

Response from Ardisam, Inc.:
4 days ago
Ardisam, Inc.
Please reach out to our customer service department for troubleshooting. 1800-345-6007 Ardiasm
Cleveland
Review 1

Poor Quality, not worth the Price, MFG No Show!!

12 days ago
I purchased the Earthquake 22 in walk behind trimmer in June 2026 and it is underpowered, and continues to shutoff and flood constantly. There has been a constant whine out of the box and it struggles to stay at optimal RPM's to be able to cut most medium level grass. I find myself standing, waiting on it to heal itself in order to proceed forward. The last use, the unit cut off and would not start back. I figured it was flooded and I really need to finish the work. I reached out to the MFG to file a claim, went through all the automated channels and never heard back from them. I could not get in touch with a live person. This is after I had properly filed the warranty paperwork. I would strongly recommend NO BUYING THIS PRODUCT! You would be better served flushing $500 dollars down the drain. I hope Tractor Supply will stand behind it.

No, I do not recommend this product.

Response from Ardisam, Inc.:
9 days ago
Ardisam, Inc.
Hello. We are sorry for the issues you are experiencing. It sounds like you have a belt tension issue. Please call our customer service dept at 1800-345-6007 or email info@ardisam.com. All of our customer service reps are real Ardisam employees, and we can help you get this figured out asap. Ardiasm
Ohio
Review 1

Viper

18 days ago
I owned one already, several years old. Unfortunately my cable broke that engaged the mowing mechanism. So not having time for repairs. I bought new one.
SweepstakesYes

Yes, I recommend this product.