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Lawn Boy 10640 20-Inch 6.75-Gross-Torque Briggs & Stratton Gas-Powered Push Lawn Mower

3.0 out of 5 stars 61 customer reviews

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  • 6.75 GT 675 Series Briggs & Stratton Ready Start Engine
  • Push mower
  • 20-Inch Steel Cutting Deck
  • 3-in-1 to bag, mulch or discharge grass clippings
  • Non-CARB compliant; not for sale in California
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Technical Details


Product Description

Amazon.com

The Lawn-Boy 10640 Walk-Behind Mower is an affordable, quality mower that is lightweight and easy to maneuver. For ease of operation, this push mower features an easy-start system and the option to mulch, bag, or side discharge. For further convenience, large wheels and an adjustable cutting height make mowing a cinch.

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10640 Walk-Behind Mower
At a Glance:
  • Maneuvers easily

  • Large wheels move smoothly on uneven ground

  • Adjustable blade height

  • Mulch, bag, or side discharge

  • Multiple warranties

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lawn-boy
The easy-start system lets you start the engine with one quick pull--no priming.

lawn-boy
The Lawn-Boy 10640 is ready to mulch,
bag, or side discharge to suit your needs.
ReadyStart Engine and Large Wheels for Easy Operation
Thanks to its ReadyStart Briggs and Stratton 675 series engine, you won't have to worry about priming or operating the choke on the Lawn-Boy 10640. Simply start the engine with one quick pull, and you're ready to mow.

Large 7-inch front wheels and 8-inch rear wheels help the Lawn-Boy 10640 run smoothly, easily gliding around turns and over obstacles in your yard.

Versatile Cutting System Meets Your Needs
The Lawn-Boy 10640 is ready to mulch, bag, or side discharge, depending on your needs. Without the bag, the mower will mulch the grass and leaf clippings back into your lawn. Alternatively, you can collect the grass and leaf clippings directly into the bag, leaving your lawn neat and clean.

For further convenience, the height of the blades is easily adjustable by setting the oversized handle grips to one of the large notches on each wheel. There are 7 different heights available between 1 and 4 inches, so you'll be sure to find the perfect setting for your lawn.

Designed with You in Mind
Built with you in mind, the Lawn-Boy 10640 has plenty of user-friendly features. To start, a one-piece handle increases maneuverability, and the lightweight, 20-inch steel cutting deck is perfect for mowing in tight areas.

Additionally, the top-mounted bagging system makes it easy to empty and replace the bag by simply inserting or removing the grass bag handle from the two notches at the base of the mower handle.

Lawn-Boy 10640Warranty Information
The Lawn-Boy 10640 Walk-Behind Mower is guaranteed to start on one or two pulls for three years, or it will be fixed for free. It is also backed by a two-year No-Worry Warranty that offers full coverage of materials, components, and workmanship. The maintenance-free engine is also covered by a three-year Power Train Warranty.


What's in the Box
Lawn-Boy 10640 Walk-Behind Mower and oil.


LAWN-BOY 2010 MOWER LINEUP
MODELLawn Boy 10640Lawn Boy 10641Lawn Boy 10642
106401064110642
ENGINEBriggs & Stratton &6.75 ft-lb Gross Torquewith Ready Start™Briggs & Stratton6.75 ft-lb Gross Torquewith Ready Start™Briggs & Stratton6.75 ft-lb Gross Torquewith Ready Start™
STARTERRecoilRecoilElectric
DECK20" Steel20" Steel20" Steel
CAPACITY3-in-1 Ready3-in-1 Ready3-in-1 Ready
BAGGING SYSTEMTop MountTop MountTop Mount
SELF-PROPEL SystemPushVariable Speed RWDVariable Speed RWD
WHEEL SIZE7" Front / 8" Rear7" Front / 8" Rear7" Front / 8" Rear
TRANSMISSION / DRIVE SYSTEMN/AMaintenance-FreeMaintenance-Free
HANDLEOne-Piece, One PositionOne-Piece, One PositionOne-Piece, One Position
HEIGHT OF CUT7 Position Adjustable 1" - 4"7 Position Adjustable 1" - 4"7 Position Adjustable 1" - 4"
WEIGHT66 lbs.70 lbs.79 lbs.
WARRANTY2 Year + 3 Year Power Train2 Year + 3 Year Power Train2 Year + 3 Year Power Train
STARTING PROMISE3 Year Tru-Start3 Year Tru-Start3 Year Tru-Start

From the Manufacturer

Legendary Lawn-Boy mowers are back for 2009 with an all new budget-friendly design. All three models are roll up your sleeves lawn equipment that have the power to cut it in the real world and don't require and second thought or a second pull making them the clear cut choice for homeowners. For customers seeking a reliable mower that is budget-friendly and back to basics, Lawn-Boy introduces a new line of mowers that are built on the quality and craftsmanship Lawn-Boy is known for. This mower features a Briggs & Stratton Ready Start 650 Series engine with no need to prime or choke when starting. Lawn Boy is so proud of this mower, they include their 3 Year Tru-Start Commitment that will guarantee the mower will start on one or two pulls for up to three years or they will fix it for free. It has a versatile 20-Inch cutting deck specifically designed for superior mulching and bagging capabilities. This mower has a 3-year power train warranty and a 2-Year No Worry Warranty with full coverage - Free. These mowers are hardworking and trustworthy carrying on the tradition that has made Lawn-Boy a backyard icon.

Product Information

Product Dimensions 40.5 x 22.5 x 17 inches
Item Weight 79 pounds
Shipping Weight 79 pounds
Manufacturer Lawn-Boy
ASIN B001MYLQEM
Domestic Shipping This item is available for shipping in the U.S. except for California and to select countries outside the U.S.
International Shipping This item is not eligible for international shipping. Learn More
Item model number 10640
Customer Reviews
3.0 out of 5 stars 61 customer reviews

3.0 out of 5 stars
Best Sellers Rank #301,913 in Patio, Lawn & Garden (See Top 100 in Patio, Lawn & Garden)
#270 in Patio, Lawn & Garden > Mowers & Outdoor Power Tools > Lawn Mowers & Tractors > Walk-Behind Lawn Mowers

Warranty & Support

Product Warranty: For warranty information about this product, please click here

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Customer Questions & Answers

Customer Reviews

Top Customer Reviews

i'll start from beginning. went to home depot pulled box off rack and $240 bucks later its in my driveway. after opening box it was built in 5 minutes
without any tools. filled crankcase with 20 oz. of included oil and put in some gas and it fired up on first pull. no choke or priming bulb nothing. just pull and it starts. awesome briggs motor. double horsepower of my old craftsman and half the sound. the exhaust pipe actually muffles sound. not like those tuna fish cans on the side of most motors. mower is very light and easily manuverable. just what i wanted. something simple. so it has a few holes on the deck used on the more expensive mower. BIG DEAL! it just means to me i got the same quality steel deck the better model gets.doesn't have any bells and whistles i don't need and without $500 price tag. cut so cleanly and evenly. sucked up all clippings. like a vacuum for my lawn. even some twigs i thought were just going flung off to the side were sucked up and munched into the bag. the chubby wheels floated over grass and i was done in a snap. wished i had more lawn.the clipping bag comes off easily and empties without making a mess. plus its a cool kawasaki ninja green! so happy i didn't spend so much more on the flashy honda. it just looks and feels like quality. highly recommended to my jealous neighbor. to you too
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I had 2 Sears Craftsman mowers before this, each lasted about 15 years, but Sears isn't what it used to be...
The Lawnboy was simple to set up. Attach the handle and add oil and gas. It started on the first pull out of the box! It is very quite and does a good job mulching.

Note that the side discharge chute is not included in the box. They include a card that says that most purchasers don't use it, so they send it free on request. Just mail in the enclosed card or check the side discharge chute request in the on-line registration at their website.

I was able to request my chute, but otherwise their web site is pretty poor. The dealer locater doesn't work (or they don't know they sell mowers in Texas). Also the registration application doesn't work - apparently today April 19, 2009 doesn't exist on planet Lawnboy. So I had better send in my chute request post card too.
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I like this no-frills mower. I'll go along with the other two positive reviews and note that this is one of Consumer Reports top rated push mowers.

Pros-
- Jointless, one-piece handle. Past push mowers have screws halfway up that loosen and make the mower harder to maneuver. The one piece handle makes this nice.
- two pull start guarantee, or they say they'll fix it.
- Briggs and Stratton engine.

Cons-
- Jointless handle really transmits vibration. I'd buy the "Good Vibrations" anti-vibration grip. Your hands may not tingle as much.

Also note the complaint that there is no side discharge, there's a card to get one if you want it. Also, the complaint that there are extra holes in the deck... just means it's the same deck that they use for their better models; big deal, it's painted.
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Buying a mower is tough, especially if you want a push model. Most of the lower-end push models are just that - very low end. Sure, they will run, but performance (i.e., even cut, good mulching, good bagging) is so-so. And, if you can find a decent performing one, the build quality/durability when it comes to handles, wheels, etc. is lacking.

On the opposite end of the spectrum you have high end push mowers from Toro (their Super Recycling series) and Honda. Great mowers - built well, perform well, will last for many years. But, the push models they make are only available from dealers (not sold at the big-box stores) so you're looking at some big bucks.

The Lawn Boy is a perfect compromise. No, it's not as well-built as a mower costing twice as much, but it is much nicer than what you'd find at a big box store. Excellent engine -- the B&S Ready Start is just that: no priming, no choke, just pull and go. The wheel assembly is also excellent, with the same wide, easy turn wheels found on the higher end Lawn Boys. That is especially nice in a push mower since you're doing all the pushing!

The bag is not as nice as the higher end Lawn Boys that have a larger opening and a one-hand design. Still, this works well. The bag is of decent quality, but on the small side. That's not a bad thing in a push mower, however, since again, you're doing all the pushing!

Cut height goes up to 4 inches. Rare to see that in a mower in this price range. The one-piece handle is sturdy, but you may want to add a piece of foam if you're using the mower for a long period of time since that will cut down or eliminate "numb hand" from the vibration.

Performance is great. No problems getting through tall grass - mulched right through it with no visible clumps.
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Verified Purchase
I've pulled the cord on my new mower twelve times. It has started twelve times. It's easy to pull, too, and doesn't require priming. I was pretty surprised at how easily it started.

My old mower, the famous, cheap red one from the discount store, was a 4.5 HP mulching mower that always bogged down in thick grass. I'm surprised at how great a difference the 6.5 HP engine makes! The Lawnboy doesn't seem to be fazed at all by the taller grass. (I mowed on the highest setting, because my grass was about 8" tall by the time my mower arrived!)

It mulched so well, my wife asked if I had mowed it twice. And unlike my old mower, it did my whole yard on 1 tank of gas. (The old mower required TWO full tanks if the grass was tall.)

I've only used it once, but I'm VERY impressed so far!

UPDATE!! Two months later, I'm still very happy with this lawn mower. It remains by far the easiest to start of any mower I have ever owned. (And frankly, I can't overemphasize this point, it's really that good.)

I'm far less impressed by the mulching capability than I was initially, and have switched to the bag. I've always avoided bags in the past, but somehow this seems easier than I remembered bags being.

The bottom line: If I had to buy a new mower today, I'd buy this one again in a heartbeat.

ANOTHER UPDATE!! OK, so it's now nearly two years later, and I just got the mower out of the shed to begin a new mowing season. I left about a half a tank of gas in it last fall (treated with a gas stabilizer.) Would it start? Yes it did, though it took me 3 pulls to start it this time. I think that's the worst it ever did!

I wondered if my review was still here, and if the mower was still available. I see it is, so I thought I'd cap off my review with a final report. It's definitely the best lawn mower I ever had.
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