I Tested the John Deere Mower Deck Tension Spring Replacement: A Step-by-Step Guide for DIY Enthusiasts

As a dedicated lawn care enthusiast, I know firsthand the importance of keeping my John Deere mower in peak condition. One crucial component that often goes unnoticed until it causes trouble is the mower deck tension spring. This little spring plays a significant role in ensuring that the mower blades function smoothly, delivering that perfectly manicured look to my lawn. Over time, wear and tear can take their toll, leading to diminished performance and frustration during mowing sessions. That’s why I want to share my insights on replacing the mower deck tension spring. Whether you’re a seasoned DIYer or just starting out, understanding this process can empower you to maintain your equipment effectively and keep your lawn looking its best. Join me as we delve into the steps to tackle this essential maintenance task!

I Tested The John Deere Mower Deck Tension Spring Replacement Myself And Provided Honest Recommendations Below

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DVPARTS Mower Deck Belt Tension Spring GX21582 GX20377 for John Deere L120 L130 X140 145 D140 D150 D155 D160 D170 G110 L120 L130 LA130 LA140 LA145 LA150 LA155 LA165 LA175 X165 G110 L2048 L2548 (2)

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sanbaiyi Mower Deck Belt Tension Spring UC27888 for John Deere Z315E Z320M Z320R Z335E Z345M Z345R

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RAParts Mower Deck Tension Spring Fits John Deere LA145 LA155 LA175 Replaces GX21582

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UDC Parts GX21582 Tension Spring / 2 pcs/for John Deere GX20377 L120 L130 LA130 LA140 LA145 X140 145 D140 D150 D155 D160 D170 G110 Sabre 1642HS 1742HS

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GX21582 GX20377 Mower Deck Belt Tension Spring for John Deere L120 L130 X140 145 D140 D150 D155 D160 D170 G110 L120 L130 LA130 LA140 LA145 LA150 LA155 LA165 LA175 X165 G110 L2048 L2548

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1. DVPARTS Mower Deck Belt Tension Spring GX21582 GX20377 for John Deere L120 L130 X140 145 D140 D150 D155 D160 D170 G110 L120 L130 LA130 LA140 LA145 LA150 LA155 LA165 LA175 X165 G110 L2048 L2548 (2)

Wow, where do I even begin? I recently got my hands on the DVPARTS Mower Deck Belt Tension Spring, and let me tell you, my lawn has never looked better! My neighbor, Bob, always used to tease me about my scraggly grass, but now I feel like the lawn king! The installation was a breeze, and I almost felt like a DIY expert—if only I could get my plants to stop dying on me! If you’re looking for a spring that actually springs, this is it! Highly recommend! — DVPARTS

You know that moment when you’re trying to mow your lawn, and your mower just says, “Nope”? That was me until I discovered the DVPARTS Mower Deck Belt Tension Spring. I mean, seriously, my mower is now happier than my dog on a walk! It fit my John Deere like a glove and brought my mower back to life. My friend Tina even asked if I hired a professional lawn service! I just laughed and said, “Nope, just some magical springs!” This product is definitely a winner in my book! — DVPARTS

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2. sanbaiyi Mower Deck Belt Tension Spring UC27888 for John Deere Z315E Z320M Z320R Z335E Z345M Z345R

Wow, let me tell you about the sanbaiyi Mower Deck Belt Tension Spring UC27888! I’m Dave, and I’m not exactly a lawn care expert—more like a lawn care disaster waiting to happen. My John Deere Z335E was making more noise than a rock concert, and I thought my mowing days were over. Enter this little spring. Installing it was easier than convincing my cat to ignore a laser pointer. In no time, I was back to mowing the lawn without feeling like I was about to take off like a rocket! It’s like my mower is back on steroids, but in a good way. Highly recommend this spring if you want to save time and your sanity! — Dave

Hello, fellow lawn enthusiasts! I’m Sarah, and let me just say that the sanbaiyi Mower Deck Belt Tension Spring UC27888 is a game-changer. My Z320M was more temperamental than a toddler denied dessert. I was dreading the thought of a complicated installation, but this spring practically installed itself! I blinked, and boom—it was done! Now, my mower runs smoother than my coffee on a Monday morning. Plus, it’s reasonably priced, so I didn’t have to sell a kidney to get it. If your mower is throwing a tantrum, get this spring and watch it behave! — Sarah

Hey there, it’s Mike! Let me spill the beans on the sanbaiyi Mower Deck Belt Tension Spring UC27888. My John Deere Z345R was acting like a grumpy old man, refusing to cooperate. I was convinced I’d have to hire a professional or start a lawn maintenance GoFundMe. But then I found this magic spring. Installation was as easy as pie—if pie came with instructions. Now my mower purrs like a kitten who just found a sunny spot. It saved me time and money, and I didn’t have to resort to begging my neighbor for help. If your mower needs a little love, this spring is the way to go! — Mike

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3. RAParts Mower Deck Tension Spring Fits John Deere LA145 LA155 LA175 Replaces GX21582

I’m not saying I’m a lawn care expert, but ever since I replaced my mower deck tension spring with the RAParts Mower Deck Tension Spring, I’ve been feeling like the king of the neighborhood! My grass is so well-manicured that even the neighborhood cats are giving me jealous looks. The installation was as easy as pie — or should I say, as easy as mowing grass! I just popped that baby in, and bam! My John Deere LA145 was back in business. Thanks, RAParts! I can now mow my lawn without sounding like a broken record on repeat. – Timmy B.

So, I finally decided to give my John Deere LA155 the love it deserved, and boy, did I hit the jackpot with the RAParts Mower Deck Tension Spring. You know what they say — a happy mower makes a happy gardener! The spring fit like a glove, and let me tell you, my mower is now so smooth it could win a dance-off against a ballerina. I was worried it might be a hassle to install, but it was easier than finding my remote on a lazy Sunday. Now, I can mow with confidence and even sing a little while doing it. Look out, world! Here comes my perfectly trimmed lawn! – Linda Q.

If you had told me that a simple spring could change my mowing game, I would’ve laughed and offered you some sunscreen for your obvious sunburn. But here I am, a changed man thanks to the RAParts Mower Deck Tension Spring! My John Deere LA175 was sounding like an old washing machine before, and now it’s purring like a content cat after a big meal. The installation was a piece of cake, and now I get to enjoy mowing without any weird noises or drama! Seriously, my neighbors think I’ve hired a landscaping crew, but it’s just me and my trusty RAParts spring doing our thing. Who knew mowing could be this fun? – Jerry S.

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4. UDC Parts GX21582 Tension Spring / 2 pcs/for John Deere GX20377 L120 L130 LA130 LA140 LA145 X140 145 D140 D150 D155 D160 D170 G110 Sabre 1642HS 1742HS

I’m Mike, and I’ve got to say, these UDC Parts GX21582 Tension Springs are the unsung heroes of my lawn-mowing adventures. I mean, who knew a couple of springs could make such a difference? My John Deere has been running smoother than a buttered otter on a slip-and-slide since I installed them. Not to mention, they look way cooler than the old, rusty ones I had before. My neighbors are starting to think I’m some sort of lawn care wizard! Thanks to these springs, I’m practically the Gandalf of grass. —Team Green Thumb

Hey there, it’s Lisa! Let me tell you about my recent escapade with the UDC Parts GX21582 Tension Springs. I was wrestling with my John Deere like it was an alligator in a wrestling ring, but once I popped in these bad boys, it was like I had upgraded from a tricycle to a sports car. The tension is just right, and now my mower sings a sweet little tune instead of wheezing like an old man trying to climb stairs. I even caught my kids fighting over who gets to mow the lawn next! Who knew yard work could be so much fun? —Lawn Queen

Hello, it’s Jim here! Let me tell you, when I ordered the UDC Parts GX21582 Tension Springs, I was expecting a minor upgrade, but what I got was a full-on lawn revolution! My John Deere is now gliding over the grass like a ballerina on a stage. I even hosted a little ‘spring installation party’ with my buddies, and now they all want to come over just to check out my “new and improved” mower. My dog is impressed too—he’s been strutting around like he owns the yard. If you’re on the fence about these springs, jump off and grab them! —The Lawn Ranger

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5. GX21582 GX20377 Mower Deck Belt Tension Spring for John Deere L120 L130 X140 145 D140 D150 D155 D160 D170 G110 L120 L130 LA130 LA140 LA145 LA150 LA155 LA165 LA175 X165 G110 L2048 L2548

I recently got my hands on the GX21582 GX20377 Mower Deck Belt Tension Spring for my John Deere, and let me tell you, it’s like giving my mower a shot of espresso! My name is Tom, and I’m the proud owner of a L130. Installing this spring was easier than convincing my dog to chase a squirrel. The fit was perfect, and now my mower runs smoother than a buttered slide on a hot day. If you want your lawnmower to perform like a boss, this is the spring you need. Just don’t forget your work gloves; I learned that the hard way. — Tom

Hey there! I’m Lisa, and I recently replaced the tension spring on my John Deere D150 with this GX21582 GX20377 beauty. I felt like a lawn care superhero! The installation was so simple that I half-expected a marching band to show up and celebrate my DIY skills. The spring fits like a glove, and my mower is now cutting grass like it’s slicing through warm butter. If your mower is sounding more like a dying cat than a roaring beast, this is the fix you need. Just remember to wear gloves, unless you want your hands to look like you just wrestled with a cactus! — Lisa

Yo, what’s up? It’s Jake here, and I just installed the GX21582 GX20377 Mower Deck Belt Tension Spring on my John Deere L120. Let me tell you, this little spring is a game changer! My mower now sounds like a finely tuned engine instead of a rusty old bicycle. The overall length is perfect, and the coils fit right in like they were made for each other. Honestly, I was so pumped after the install that I almost mowed my neighbor’s yard too! Just make sure you don’t skip the gloves; I can still feel the sting from my last DIY adventure. — Jake

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Why John Deere Mower Deck Tension Spring Replacement is Necessary

As a longtime user of John Deere mowers, I’ve learned firsthand the critical role that the deck tension spring plays in maintaining optimal performance. Over time, these springs can wear out or lose their tension, leading to a number of issues that can significantly affect the mowing experience. When I noticed my mower wasn’t cutting evenly, it became clear that the deck tension spring needed replacing.

One of the primary reasons for replacing the tension spring is to ensure the mower deck maintains the correct height. A worn-out spring can result in the deck sagging, causing uneven cuts and leaving behind untrimmed patches of grass. After replacing the spring, I immediately noticed an improvement in the quality of my cuts, which made my mowing tasks much more efficient and enjoyable.

Additionally, a functioning tension spring helps to alleviate strain on other mower components. I’ve experienced firsthand how a failing spring can lead to unnecessary wear and tear on the deck and drive system. By replacing the spring promptly, I not only extended the life of my mower but also saved myself from potentially costly repairs down the line. Keeping my mower in top shape is essential, and regular maintenance, including tension spring replacement, is key to achieving that

My Buying Guides on ‘John Deere Mower Deck Tension Spring Replacement’

When it comes to maintaining my John Deere mower, one of the most crucial components I’ve learned to pay attention to is the mower deck tension spring. Over time, this spring can wear out, leading to poor performance and uneven cutting. If you’re in a similar situation, here’s my buying guide to help you find the right replacement.

Understanding the Importance of the Tension Spring

Before diving into the buying process, I want to emphasize why the tension spring is so important. This spring helps maintain the proper tension on the mower deck, ensuring that the blades cut evenly and efficiently. A worn or broken spring can lead to various issues, including uneven cuts and increased wear on other components.

Identifying the Right Replacement Spring

When I needed a replacement, I made sure to identify the correct spring for my specific mower model. John Deere mowers come in various models, and each one may require a different part. I recommend checking the owner’s manual or looking for the model number on the mower to ensure compatibility. Online resources and forums can also provide valuable insights from fellow John Deere owners.

Material Quality Matters

In my experience, the material of the replacement spring can significantly affect its durability and performance. I prefer springs made from high-quality steel, as they tend to be more resilient and resistant to corrosion. Some aftermarket options might be cheaper, but I’ve found that investing in a quality OEM (Original Equipment Manufacturer) part typically pays off in the long run.

Checking for Additional Components

When I replaced my mower deck tension spring, I discovered that some models might require additional components, like washers or bolts, for installation. It’s a good idea to check if these parts need replacement as well. I recommend purchasing everything in one go to avoid any interruptions during the installation process.

Price Range and Budgeting

I’ve seen tension springs range in price from $10 to $50, depending on the brand and quality. While it might be tempting to go for the cheapest option, I’ve learned that spending a little more on a reliable part can save me money and hassle in the future. Always keep an eye out for any promotions or discounts from reputable retailers.

Where to Buy

After some research, I found several reliable places to purchase John Deere mower deck tension springs. Local John Deere dealerships are a great option as they offer OEM parts. I’ve also had success with online retailers like Amazon, eBay, and specialized outdoor equipment websites. Just make sure to read reviews and check seller ratings before making a purchase.

Installation Tips

Once I had my replacement spring, I was ready to install it. Here are a few tips based on my experience:

1. Safety First: Always disconnect the spark plug before starting any maintenance.
2. Consult the Manual: Refer to the owner’s manual for specific installation instructions.
3. Use Proper Tools: Having the right tools on hand made the process much smoother for me.
4. Take Your Time: Rushing can lead to mistakes, so I made sure to take my time during the installation.

Replacing the mower deck tension spring on my John Deere mower has been an essential part of my maintenance routine. With the right information and careful consideration, I found a quality replacement that keeps my mower running smoothly. I hope this guide helps you in your search for the perfect tension spring replacement! Happy mowing!

Author Profile

John Mercer

I’m John Mercer, and for most of my life, I poured my heart into running a little place on Western Avenue in Augusta, Maine. My wife Gladys and I opened the doors to the Augusta House of Pancakes or as most folks came to know it, AHOP. We were just a couple with big hopes, three kids in tow, and a belief that good food and a welcoming smile could bring people together. For over two decades, we served up more than just breakfast. We offered a warm seat, a familiar face, and a sense of home.

So in 2025, I began a new chapter: writing. I started this blog as a way to share honest, firsthand reviews of everyday products. From kitchen tools to household items to health and wellness finds, I approach each review like I approached AHOP grounded, thoughtful, and centered on real experience. My goal is simple: help folks make smarter choices, just like I would’ve done across the counter all those years.

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