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Model #DT-40BH

Store SKU #689829

40 in. Tow-Behind Dethatcher

  • Prevents roots, leaves and grass clippings from ruining your lawn
  • Durable steel frame offers long-lasting reliable use
  • Adjustable mounting positions give you the support you need
  • See More Details

Frequently Bought Together


Product Overview

The Brinly 40 in. Tow-Behind Dethatcher for Riding Mowers helps prevent roots, leaves, grass clippings and other small vegetation from inhibiting the growth of your lawn. It features 20 flexible dual-tine tips to comb the matted layer of thatch in a lawn. 14-Gauge steel weight tray is sturdy and durable while allowing for adjustment of the weight of dethatcher for penetration into the top layer of soil.
  • Maximum Thatch Removal: 40" working width and 2 rows of 10 independently flexing spring steel tines comb through a lawn, lifting thatch up and out of the lawn where it can be mowed or mulched to promote a healthier root system.
  • Multiple Settings for Different Tasks: Brinly's Dethatcher can be set to work as a straight dethatcher (tines comb the grass, flicking up thatch) or in a more aggressive mode where the tines scrape and scarify the soil as they pull up thatch - useful for re-seeding projects. Place the Dethatcher in transport mode for crossing drives and walkways.
  • Long-Lasting Construction: All steel design with heavy-duty tray holds up to 70 lbs. of additional weight (for aggressive operations). Tines are made of durable spring steel; in the unlikely event of a breakage, a safety rod is included to catch the tine and prevent contact with mower blades. No-flat diamond rubber-tread transport wheels for durability.
  • Easy-to-Engage Transport Wheels: The engagement lever, conveniently accessible from the driver's seat, lowers the 6" never-flat transport wheels when crossing sidewalks, driveways, and paths.
  • Spring Steel Tines: 20 long-lasting, triple-coil strength 3/16″ diameter spring steel tines stay flexible and guarantee performance. Tines come pre-assembled to the tray.
  • Universal Hook-Up: A single, heavy-duty universal hitch pin is included to easily attach the Dethatcher to any rider or tractor and most any ZTR or ATV. Features drawbar with adjustable mounting positions to adapt to all tractor hookup heights.
  • Simple Assembly: Tines come pre-assembled on the tray from the factory to decrease assembly time. Includes easy pictorial assembly manual with fastener skin pack; each part is matched to each assembly step. Assembly video also available on Brinly's YouTube channel.
  • Made in the USA: Trusted Since 1839, Brinly-Hardy Company has been dedicated to providing quality, durable, and innovative Lawn & Garden Products built in the USA
  • Product Support: Replacement parts orders can be ordered online at Brinly's website or by calling our toll-free number 877-728-8224. The Brinly Customer Service team is available to assist with questions or concerns.
  • California residents

Info & Guides

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Name40 in. Tow-Behind Dethatcher48 in. Tow-Behind Dethatcher38 in. Front Mount Dethatcher for RYOBI Electric Riding Mower
Assembly RequiredYesYesYes
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Assembled Depth (in.)
40 in
Assembled Height (in.)
33 in
Assembled Width (in.)
40 in
Clearing Width (In.)
40 in
Working Width (in.)


Application Type
Lawn Care
Assembly Required
Assembly Required,Single-lever height adjustment,Zero-Turn Capable
Fits Brands
Fits Brands
Fits Models
All models with rear hitch plate
Hitch Pin
Number of rows
Number of tine tips
Product Weight (lb.)
30 lb
Riding Mower Features
Pneumatic Tires,Tool-free adjustments

Warranty / Certifications

Manufacturer Warranty
2 Year

Questions & Answers


Does this bite hard enough to pull weeds out of a sandy beach? They come right out by hand since ...

Asked by Jord June 3, 2021

It probably would if you put enough weight on it, such as a few cinder blocks.

Is this compatible with a Husqvarna 42" riding mower?

Asked by Zach May 16, 2021

Dear Zach, thank you for your question and interest in our product. Yes, it is compatible with the Husqvarna 40" riding mower. We always recommend to check your mower towing compacity to ensure it can tow the weight.

compatible with ryobi RY48111?

Asked by homedepotuser April 23, 2021

Should attach to any riding mower or tractor that will take a standard hitch pin

The one in the video is different from the one in the pictures - which one is the one you actuall...

Asked by Nickname March 28, 2021

I received the one in the picture.

Will the steel tines wreck the yard irrigation system?

Asked by MG September 14, 2020

Thank you for your question. The previous response is correct; the heads could be marked and avoided. However, we have not heard of people having issues with using a dethatcher with a sprinkler system. It will certainly not harm anything below the soil. The normal adjustment for the tines is to set them 1/2" above a paved surface. Depending on the height of any sprinkler heads, you might be able to adjust it a bit higher to 'clear' them and still have it function well. The tines themselves are made of spring steel so might also 'flex' around them. Good luck with your project and let us know what solution works best for you.

looking for motorised vertimower

Asked by nicholas August 17, 2020

This is not a mower, nor is it motorized. It’s more resemblance to a tension structured tine tiller without any digging.

Does the thatcher hook up to craftsman riding mowers

Asked by Rich July 1, 2020

Yes. It will attach to any lawn or garden tractor with a rear hitch plate.

Does it come with hitch pin?

Asked by Rob April 30, 2020

Yes, it does.

Bunty cords come with?

Asked by Cheryl March 30, 2020

Bungee??? No

Can you pay Home Depot to assemble and if yes what is the assembly charge

Asked by Dfw September 28, 2019

Home Depot offers "free assembly" on many goods. I've had a dump cart assembled by them in the past for free. I'm not sure that this is one of the items they would do though, because it's so simple. I question why you would need someone to assemble this for you. I purchased it and it took me maybe 15 minutes. There was maybe 6-8 bolts, plus nuts and washers for the tires. If you really must have it assembled, the appropriate thing to do would be to call the store, where you will have to pick it up.

40 in. Tow-Behind Dethatcher - page 2

Customer Reviews

  • 4.4
    out of 553 reviews
  • 94% recommend this product
Filter by:
Showing 1-10 of 553 reviews
Works really well!
Assembly was easy, adjustments were easy to do. Pulling was easy with a couple of blocks for weight and stability. Just a few passes on my front yard freed up a large wheelbarrow full of dead grass and weeds.Just the ticket
by TeslaMan
Awesome equipment Awesome price
I was weary about purchasing this dethatcher because of how cheap the price was. I am happy I made this purchase. The Assembly was too easy. All I had to do was read the pictures. LOL . The Assembly to me about 30 minutes. My wife had to help me the last 5 minutes to put together the linkage and control handle assembly. I used it the next following day. When I hooked the dethatcher up to my riding mower I had to readjust the platform to level out the front and back rakes (Unloosen 4 nuts level and retighten). so keep that in mind. I used to cement blocks. The number 1 setting for transport and the number 2 setting worked perfect. I think the number 3 setting would be too much for the rakes to handle. I detached about 1/2 of acre on level, sloped, and a bumpy yard and it worked perfect. this piece of equipment is awesome and so is the price.
by Cub
Response from BrinlyCustomerServiceMar 12, 2021
On behalf of everyone on the Brinly team, thank you for your review! We appreciate you sharing your experience, and are happy to hear you are pleased with your new dethatcher.
For warranty, service parts or for help at any time, please don’t hesitate to reach out to our Customer Service team at 877-728-8224 or at customerservice@brinly.com Brinly
Works awesome!
Was surprised at how well it worked! Definitely recommend.
by Nickname
Response from BrinlyCustomerServiceSep 4, 2020
Thank you so much for your feedback! Please don’t hesitate to reach out to our Customer Service team at 877-728-8224 or at customerservice@brinly.com if you have any questions or concerns. Brinly
Works as it should
I just bought and assembled it a day ago. Not difficult to assemble but because it's mostly stamped sheet metals i was careful not over-tighten. The instructions were adequate. Be sure to follow the alignment instructions while it's hooked up to the mower before doing the final tightening. Check the height of each side with a tape measure while on a level surface. Ran it today on setting 2 with no weight and it worked great. Pulled up about 24 cubic feet of dead grass in two runs around the yard (1/2 acre). Setting 3 moves the wheels off the ground so it sits completely on the tines and this is the only setting i could see possibly needing to add weight for. All these people who automatically added weight probably didn't assemble it correctly or with attention to detail.
by Ben
Response from BrinlyCustomerServiceMay 22, 2020
Thank you so much for your feedback! Please don’t hesitate to reach out to our Customer Service team at 877-728-8224 or at customerservice@brinly.com if you have any questions or concerns. Brinly
4 people found this helpful
Great product, little challenging assembly, but not too bad. It worked awesome on my lawn! Highly...
Great product, little challenging assembly, but not too bad. It worked awesome on my lawn! Highly recommend.
by Lb
1 person found this helpful
This product worked as advertized. Price was reasonable but was charged an assembly of $20.00 pri...
This product worked as advertized. Price was reasonable but was charged an assembly of $20.00 price did not show charge as other lawn equipment did. Product was not assembled correctly had to spend approx. one hour reassembling some of the parts after looking online for the manual, several blots were also loose. I would recommend verifying the assemble completed properly before leaving store. The adjustment lever was on backwards and mounting bolts to hitch were loose.
by none
7 people found this helpful
Stop looking and buy this one!!!!
Wow. I didn't half in acre in about an hour. I can probably go faster next time, but I was in bad shape to begin with. I couldn't have dethatched that much in a week with a lawn rake. The instructions were a little weak, but it's mostly an easy assembly. I bagged up more than I do when I'm actually cutting grass. I wish I'd purchased this tool sooner! The trailer sprayer is next on my list.
by BenW
9 people found this helpful
Saved my back... amazingly efficient
Pulled this puppy behind the mower, and unexpectedly got 13 huge plastic bags of lawn scrapings out of 1.29 acres over a week ago. Lawn is now breathing and looks so much healthier and greener. Glad I had a leaf sweeper to collect the piles of scrapings...
by CartoonBob
12 people found this helpful
found just what I was looking for
We have lots of pine trees & I needed something to rake up the needles. After looking through many products and reviews I found this dethatcher & I couldn't believe the job it did and although I ran over the same area several times it didn't pull up the well rooted grass. it was easily assembled in just a short while too.
by Marvin
14 people found this helpful
This product works great
I would recommend to any serious gardener. My tractor had no hitch and was higher than normal. So I had to make a hitch which cost almost as much as the detacher. But now I have a hitch for many other uses.
by winslow
4 people found this helpful
Showing 1-10 of 553 reviews