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Model #MNA152506

Store SKU #1005796952

20 in. 125 cc Briggs & Stratton Gas Walk Behind Push Lawn Mower with 4 wheel height adjustment and Prime 'N Pull Start

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  • 125cc Briggs and Stratton engine with Prime N Pull start
  • 7 in. wheels for maneuverability and to help mow tight spaces
  • 4 wheel height adjustment to get the cut you want
  • View More Details
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Product Overview

The Murray 20-inch cut gas push mower offers a lightweight, compact design for easy maneuverability. Starting is a breeze with the Prime 'N Pull Easy Start System. Just prime the bulb on your mower three times and pull the cord for a guaranteed start. The Briggs & Stratton 125 cc engine provides great cutting power. This gas push mower has a 20-inch cutting blade and side discharge feature. Sturdy 7-inch wheels provide great support. Adjust the cutting height quickly and easily with 5-position, 4-wheel height adjustment. This gas push mower assembles quickly out of the box, with no tools required. Murray. Get it done. Go have fun.
  • 21 in. steel deck
  • Prime EZ starting system, the hassle-free way to start your mower, push the prime bulb 3-times and pull the starting cord
  • 5-position, four 4-point height adjustment
  • 4 sturdy 7 in. wheels let's you mow tight spaces
  • Use fuel stabilizers to maintain your engine and increase the longevity of your mower
  • No tools required for assembly
  • California residents

Info & Guides

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Name21 in. 144cc 2-in-1 Gas Walk Behind Push Mower20 in. 125 cc Briggs & Stratton Gas Walk Behind Push Lawn Mower with 4 wheel height adjustment and Prime 'N Pull Start21 in. 170 cc Gas 3-in-1 Walk Behind Push Mower40V Brushless 20 in. Cordless Battery Walk Behind Push Lawn Mower with 6.0 Ah Battery and Charger
Power TypeGasGasGasBattery
Size of Yard1/4 - 1/2 Acre1/4 - 1/2 Acre1/4 - 1/2 Acre1/4 - 1/2 Acre
FeaturesAdjustable Cutting Height,Mulching Lawn MowerAdjustable Cutting Height,Collapsible,Foldable handle,Residential,Tool-free adjustmentsAdjustable Cutting Height,Bagger,Mulching Lawn MowerAdjustable Cutting Height,Adjustable Handlebar,Bagger,Brushless Motor,Collapsible,Foldable handle,Headlights,Mulching Lawn Mower,No Oil Change Required,Single-lever height adjustment
Engine MakeOEM Branded EngineBriggs and Stratton EngineOEM Branded EngineOEM Branded Engine
Cutting Width (in.)21 inches20 inches21 inches20 inches
Rear Wheel Height (in.)High WheelLow WheelHigh WheelHigh Wheel
Voltage (v) 40v
Battery Run Time (min.) 48
View ProductView ProductView ProductView Product



Assembled Depth (in.)
60.10 in
Assembled Height (in.)
41.50 in
Assembled Width (in.)
24.92 in
Blade Length (in.)
Cutting Width (in.)
20 inches
Front Wheel Size (in.)
Mower Deck Width (in.)
Rear Wheel Height (in.)
Low Wheel
Rear Wheel Size (in.)


Assembly Required
CA (CARB) Compliant
CARB Compliant
Cutting Height Options
Cutting Options
Deck Material
16 Gauge Steel
Deck Type
Engine Displacement (cc)
Engine Make
Briggs and Stratton Engine
Engine Torque (ft.-lb.)
Adjustable Cutting Height,Collapsible,Foldable handle,Residential,Tool-free adjustments
Fuel Tank Capacity (gallons)
Engine oil
Lawn Mower Type
Push Mower
Maximum Cutting Height (in.)
Minimum Cutting Height (in.)
Mower Size Type
Number of Blades
Number of Handlebar Positions
Oil Capacity (oz.)
Power Type
Product Weight (lb.)
Recommended Oil Type
SAE 30
Recommended Terrain
Size of Yard
1/4 - 1/2 Acre
Start Type
Pull Cord
Walk Behind Mower Type
Manual Push

Warranty / Certifications

Certifications and Listings
CARB Compliant,EPA Approved,ETL Listed
Manufacturer Warranty
Two Year Limited Warranty

Questions & Answers

Typical questions asked about products:

  • Is the product durable?
  • Is the product easy to use?
  • What are the dimensions of the product?

Customer Reviews

  • 4
    out of 360 reviews
  • 65% recommend this product
Filter by:
Showing 1-10 of 360 reviews
Stay away from this brand…..
Lawn mower worked fine until the blade adapter snapped the blade came off…I reached out to Briggs and Stratton also Murray and they suggested I use and aftermarket MTD blade adapter that is cut to small for the shaft circumference it won’t fit at all …..so now I’m stuck with a brand new lawnmower that does not work at all because they don’t make the correct blade adapter
Response from Daye North America TeamJul 2, 2021
Hi Holly,

We are sorry that your blade adapter snapped. This should not happen on a new mower. Please call our customer care team. They can assist with finding the correct part for your mower. They can be reached at 855 693-2582

Murray Customer Care DayeNorthAmerica
    1 person found this helpful
    Good mower for price
    This mower is good for the price and does what it needs to do.. and after reading another review I am quite disappointed in the company. My mower as well in first 5 mins had the flapper chewed up.. the other customer says in his review Murray states you are supper to pull backwards???? Even if you went forward thru your whole yard there will ALWAYS be some point where you have to back up!! That is a poor excuse on Murray part .. very disappointed in there response to the other customer. and I will definitely keep this in mind for future purchases. I did give 4 stars because it does cut good and start immediately.. as well as ease of putting together.
      • Recommended
      4 people found this helpful
      Avoid this mower at all cost. In the first 5 minutes of use, the rear flap was damaged. I calle...
      Avoid this mower at all cost. In the first 5 minutes of use, the rear flap was damaged. I called Murray. They say you can't go backwards with this mower. I told him my previous Murray is 20 years old and the rear flap is still perfect, and I go backwards all the time. They told me I would have to haul the mower 40 miles round trip for repair, and I would probably have to pay for it since the manual says you can't go backwards. I asked if there was anything else I could do, and he said you can buy the part yourself and install it, but it might do it again. Zero score for Murray I my opinion.
      Response from Daye North America TeamMay 3, 2021
      Hi MurrayGoneBad,
      We are sorry that the flap on your mower was damaged. We would like to speak with you to get a better understanding of how this happened. Please call us at 855 693-2582, or you can email your direct contact info to customercare@dayeope.com. DayeNorthAmerica
        10 people found this helpful
        Easy set up!
        [This review was collected as part of a promotion.] Suck an easy set up, the Murray 20' lawnmower literally just lifts out of the box, no tools are required. Easy pull start up, motor sounds great. I was able to adjust cutting cut without any problems. This lawnmower has a side discharge and a 4.5 ft-lbs OHV engine. The push and pull when mowing is so smooth, easy for my teenagers to use this summer.
          • Recommended
          Murray 20" mower
          [This review was collected as part of a promotion.] The Murray mower came perfectly packaged. I am female and it was quite simple to put together by myself. Once it was put together I added oil and gas and it started right up. I enjoy the lightweight push of the mower yet I felt the power behind it. It cut the grass at my desired level. I have always enjoyed push mowing my yard because it makes the nice cut grass patterns on my lawn. I am very satisfied with this mower and look forward to using it for years to come.
            • Recommended
            Perfect lawn
            [This review was collected as part of a promotion.] I got this mower and I love it. It was very easy to assemble. I must say I was impressed with how much effect it took to assemble. It is very easy to push, very little effort for it. I can't wait until spring so we can mow the grass. I definitely recommend this mower.
              • Recommended
                Hit the Ground Cutting
                Lower handle is already attached to the deck so I just had to screw the upper part on and that's it. I put some already-opened oil in there just to wash out the factory grit, so a little bit of gas--enough for a half yard--was used until the engine stopped. It needed a first oil change as soon as an hour or so passed and that engine oil that came out was ALL BLACK like it was used all season. I stopped by Auto Zone for an oil funnel first. I used an empty plastic Folgers' coffee container to catch the oil that fit between the grass chute and the engine.
                  • Recommended
                  This mower is awesome if you don’t need all the...
                  This mower is awesome if you don’t need all the bells and whistles. Cuts extremely well. I was really surprised. If you need a decent mower at a very reasonable price then look no further.
                      Showing 1-10 of 360 reviews