- 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
Amazon.com Product Description
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.
10640 Walk-Behind Mower
At a Glance: Maneuvers easily Large wheels move smoothly on uneven ground Adjustable blade… More >>
Lawn Boy 10640 20-Inch 6.75 GT Briggs & Stratton Gas Powered Lawn Mower


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
Rating: 5 / 5
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.
Rating: 5 / 5
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.
Rating: 5 / 5
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. I don’t use the bag attachment unless I’m picking up leaves in the fall, so I can’t comment on how well it bags yet. I’ll update this in the fall after I have some experience. I can say that this is one of the best mulching mowers I’ve used. The “Consumer” magazine gives this a very high rating, and I concur – performs like a champ.
I don’t find the weight to be a problem at all. Very easy to push, and turns (with the fat boy tires) are easy as can be. Solid construction means you have to deal with some weight — the deck is solid and does not flex at all. Need thick steel (and therefore weight) to do that. If you can’t push this you should look at a self-propelled model (or hit the gym a bit — anyone who is in reasonable good shape should not have a problem).
It’s getting ever more hard to find a decent push mower. Seems everyone wants a self-propelled these days. Nothing wrong with that, but I look at lawn mowing as a form of exercise. Plus, I have several planting beds in the lawn, and a push mower is a perfect fit for getting around the obstacles easily. Good to see that Lawn Boy is not ignoring this segment of the market. Highly recommend this mower if you’re looking for a push model.
Rating: 5 / 5
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.
Rating: 5 / 5