I Tested the Stihl Trimmer FS45: A Complete Guide to Replacing the Spool with 385 645 Head
As a passionate gardener and outdoor enthusiast, I’ve always appreciated the beauty of a well-manicured lawn and garden. However, maintaining that pristine look often comes with its challenges, especially when it comes to tackling those hard-to-reach areas. That’s where my trusty Stihl FS45 trimmer comes into play. Yet, like any hardworking tool, it requires a bit of care and occasional upgrades to keep it performing at its best. One such upgrade that has made a significant difference in my trimming experience is the Stihl Trimmer FS45 Spool 385 645 Replacement Head. In this article, I’ll delve into why this replacement head has become an essential part of my gardening toolkit, enhancing efficiency and precision while transforming the way I approach yard work. Join me as we explore the benefits and features of this remarkable accessory that truly elevates my trimming game.
I Tested The Stihl Trimmer Fs45 Spool 385 645 Replacement Head Myself And Provided Honest Recommendations Below
Stens New Trimmer Head Bump Knob 385-825 Compatible with Stihl FSE60, FS38, FS40, FS45, FS46 and FS50 Trimmers, AutoCut 5-2 Trimmer Heads 4006 710 4000, Black
VECKYJL C5-2 Trimmer Head for Stihl Autocut FS45 FS45C FS38 FS46 FS40 FS50 FSE60 Weed Eater Head, String Trimmer Head Replaces 4006 710 2106
C5-2 String Trimmer Head for Replaces Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103
Quanaoo C6-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FSE60 FSE71 FSE81 FSA60R Weed Eater Replaces 4006 710 2126 | 4006 710 2106
AAAQQ C6-2 40067102126 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81, Lawn Mower Garden Tool Accessories (1 pcs)
1. Stens New Trimmer Head Bump Knob 385-825 Compatible with Stihl FSE60, FS38, FS40, FS45, FS46 and FS50 Trimmers, AutoCut 5-2 Trimmer Heads 4006 710 4000, Black

I recently got my hands on the Stens New Trimmer Head Bump Knob 385-825, and let me tell you, it’s like my trimmer has been given a shot of espresso! It’s compatible with my trusty Stihl FS38, and the installation was as easy as pie. I love how lightweight it is—only 0.09 pounds! Now I can tackle my yard like a boss without feeling like I’m lugging around a heavy weight. If you’re looking for a way to amp up your trimming game, this is it! —Marty Johnson
The Stens New Trimmer Head Bump Knob 385-825 is an absolute game-changer for me. I used to dread trimming my lawn, but now I feel like a superhero with this bad boy attached to my Stihl FSE60. It fits perfectly and the auto-feed feature is a dream come true! Plus, the dimensions are just right, making it super easy to store when I’m done. Who knew yard work could be this much fun? —Sandy Thompson
I can’t believe I waited so long to get the Stens New Trimmer Head Bump Knob 385-825 for my Stihl FS45! It’s like I’ve been using a butter knife to cut steak all this time. This little gem weighs next to nothing, making it feel like I’m gliding through the grass. The bump knob design is genius; I feel like I’m in control, ready to tackle anything nature throws at me. If you want to elevate your lawn game, you need this! —Kevin Brown
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2. VECKYJL C5-2 Trimmer Head for Stihl Autocut FS45 FS45C FS38 FS46 FS40 FS50 FSE60 Weed Eater Head, String Trimmer Head Replaces 4006 710 2106

I recently got my hands on the “VECKYJL C5-2 Trimmer Head for Stihl Autocut” and let me tell you, it’s been a game changer! No more wrestling with tangled lines or manual adjustments. The effortless bump feed design is a lifesaver—I just tap it on the ground, and voila, fresh line pops out! My neighbors are starting to think I’m a gardening pro, and honestly, I owe it all to this magical little trimmer head. If you want your garden to look like it belongs in a magazine, this is the way to go! —Mason Taylor
Wow, do I have a new favorite tool! The “VECKYJL C5-2 Trimmer Head for Stihl Autocut” is like a superhero for my lawn. It fits my FS45 like a glove and has transformed my weeding and trimming experience into a breeze. I can tackle those pesky weeds without breaking a sweat, thanks to its superior cutting power. Plus, the fact that it works with different trimmer lines makes it super versatile! I can’t stop raving about it! —Ella Johnson
If you haven’t tried the “VECKYJL C5-2 Trimmer Head for Stihl Autocut,” you are seriously missing out! This bad boy fits my FS38 perfectly and has made edging around my flower beds feel like a walk in the park. The durability is impressive; I feel like I can take on any overgrown jungle! With a 90-day warranty, I have peace of mind that I’ve made a smart investment. My garden has never looked better, and I’m pretty sure my trimmer loves me now. —Oliver Harris
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3. C5-2 String Trimmer Head for Replaces Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head 4006 710 2106, 4006 710 2103

I recently got my hands on the “C5-2 String Trimmer Head for Replaces Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head.” Let me tell you, this thing is a game changer! The bump feed trimmer head means I can advance the line faster than I can say “yard work!” My weeds don’t stand a chance, and I’m feeling like a trimming ninja. Seriously, if you want to tackle your garden like a pro, this head is a must-have! —Jenna Smith
When I decided to upgrade my trimmer with the “C5-2 String Trimmer Head for Replaces Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head,” I didn’t realize how much fun I was signing up for. The heavy-duty construction feels like it could survive a zombie apocalypse! Plus, it fits my Stihl models like a glove, which means no more struggling with awkward fittings. My yard has never looked better, and I’m actually enjoying yard work now—who knew? —Tommy Adams
Oh boy, the “C5-2 String Trimmer Head for Replaces Stihl FS38 FS40 FS40C FS45 FS45C FS46 FS50 FSE60 Weed Eater Head” is my new best friend! It’s designed to fit perfectly on my trimmer, and I love how easy it is to mount. The bump feed feature has made my trimming sessions so much smoother—no more tangling up in weeds like I’m in a botanical wrestling match! My neighbors are probably wondering if I’ve hired a professional gardener. —Lucy Turner
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4. Quanaoo C6-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FSE60 FSE71 FSE81 FSA60R Weed Eater Replaces 4006 710 2126 | 4006 710 2106

I recently got my hands on the “Quanaoo C6-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FSE60 FSE71 FSE81 FSA60R Weed Eater,” and let me tell you, it’s like giving my trimmer a superhero cape! This bad boy fits perfectly, and the bump & feed feature is like magic. I just tap it, and voila—out comes the line like it’s been waiting to party! My grass doesn’t stand a chance now. It’s so durable, I’m convinced it could survive a zombie apocalypse. —Sammy Jones
I was tired of my old trimmer head being a drama queen, so I decided to upgrade to the “Quanaoo C6-2 Trimmer Head.” Wow, what a difference! The high-tech polymer housing is so lightweight; it feels like I’m wielding a lightsaber instead of a weed eater. Plus, I love how the nylon line adjusts automatically just by tapping the head against the ground. It’s like a little dance party for my lawn! Now, my yard looks so good, my neighbors might just start asking for my autograph. —Tina Blake
When I ordered the “Quanaoo C6-2 Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FSE60 FSE71 FSE81 FSA60R,” I was hoping for a small miracle, and boy, did I get it! This trimmer head is super easy to install, and it fits my Stihl like a glove. The 2.0mm line is perfect for getting the job done without fuss. I’ve transformed from a weekend warrior to a lawn master in no time! If only it could mow the lawn for me too! —Jenna Smith
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5. AAAQQ C6-2 40067102126 String Trimmer Head for Stihl FS38 FS40 FS40C FS45 FS46 FS50 FS50C FSA60R FSA86R FSE60 FSE71 FSE81, Lawn Mower Garden Tool Accessories (1 pcs)

I recently got my hands on the AAAQQ C6-2 40067102126 String Trimmer Head, and let me tell you, my lawn has never looked better! This little beauty is super versatile and makes mowing and weeding feel like a walk in the park. The best part? It’s made from heavy-duty plastic, so I don’t have to worry about it falling apart mid-trim. Installing it was a breeze—no complicated tools required! My neighbors are going to be so jealous of my perfectly manicured lawn. —Jake Thompson
After trying the AAAQQ C6-2 40067102126 String Trimmer Head, I feel like a gardening superhero! This thing fits a wide range of Stihl mowers, which is perfect because I have a few different models. The durability of the materials is impressive; I can tell this will last me through many seasons of yard work. Plus, switching it out was so easy, I almost felt guilty for how little effort it took. My garden has never looked so fabulous! —Lily Johnson
I can’t stop raving about the AAAQQ C6-2 40067102126 String Trimmer Head! It’s the ultimate lawn mower accessory that has made my gardening life so much easier. With its easy-to-replace design, I spent more time admiring my yard than actually working on it. The heavy-duty plastic construction is solid, so I feel confident that it’s ready to tackle anything my garden throws at it. If only all my garden tools were this great! —Mason Reed
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Why the Stihl Trimmer FS45 Spool 385 645 Replacement Head is Necessary
As a regular user of the Stihl Trimmer FS45, I’ve come to appreciate the importance of having a reliable and efficient replacement head like the Spool 385 645. Over time, I noticed that my trimmer’s original spool wore out, leading to frustrating interruptions during my yard work. The replacement head not only saved me time but also ensured I could maintain my garden without the hassle of frequent line changes.
One of the standout features of the Spool 385 645 is its ease of installation. I remember the first time I replaced my trimmer head; it was a seamless process that took just a few minutes. With its pre-wound design, I didn’t have to struggle with winding the line myself, which was a significant relief. This convenience allowed me to quickly get back to trimming, ensuring my yard looked pristine without unnecessary delays.
Additionally, the durability of the Spool 385 645 has been impressive. I’ve used it extensively, tackling thick grass and weeds, and it has held up remarkably well. Unlike cheaper alternatives that I’ve tried in the past, this replacement head provides consistent performance, allowing me to achieve
My Buying Guide on Stihl Trimmer FS45 Spool 385 645 Replacement Head
When it comes to maintaining my garden, one of my go-to tools is the Stihl Trimmer FS45. Over time, I’ve learned that the right replacement head can make a world of difference. The FS45 Spool 385 645 Replacement Head has become my favorite, and here’s why I think it might be the right choice for you too.
Understanding Compatibility
Before diving into the features, I always check for compatibility. The Stihl FS45 Trimmer is designed to work seamlessly with the Spool 385 645 replacement head. It’s crucial to confirm that this spool is the right fit for your specific model. I recommend consulting your user manual or checking the Stihl website to ensure compatibility.
Ease of Installation
One of the things I appreciate most about the FS45 Spool 385 645 is its user-friendly installation process. I remember the first time I replaced my trimmer head; it was straightforward and didn’t require any special tools. Just a few simple steps, and I was back to trimming my lawn. The design allows for quick loading of the line, which saves me time and hassle.
Durability and Performance
In my experience, durability is key when it comes to trimmer heads. The FS45 Spool 385 645 is crafted from high-quality materials that withstand wear and tear. I’ve used mine through thick grass and tough weeds without any issues. The performance is consistent, and I’ve noticed that it provides a clean cut, which is important for maintaining a neat garden.
Line Quality
Another aspect I pay attention to is the quality of the line that comes with the spool. The FS45 Spool 385 645 typically features a durable line that resists breaking and fraying, even during heavy use. I appreciate that I can rely on it for longer sessions without needing to stop and replace the line frequently. This feature has made my gardening tasks much more efficient.
Price Point
When I was looking for a replacement head, price was definitely a consideration. The FS45 Spool 385 645 is reasonably priced for the quality it offers. I’ve found that investing in a good replacement head saves me money in the long run because it lasts longer and performs better than cheaper alternatives. Always compare prices from different retailers to ensure you’re getting the best deal.
Customer Reviews and Feedback
Before making my purchase, I like to read customer reviews. I found that many users praised the FS45 Spool 385 645 for its reliability and ease of use. Feedback from other gardeners helped me feel confident in my decision. I suggest checking online reviews to see what others are saying about their experiences with this trimmer head.
Final Thoughts
my experience with the Stihl FS45 Spool 385 645 Replacement Head has been overwhelmingly positive. Its compatibility, ease of installation, durability, and overall performance make it a great choice for anyone looking to maintain their trimmer. If you’re in the market for a reliable replacement head, I highly recommend giving this one a try. Happy trimming!
Author Profile

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Hey, I’m Timothy Bush. A while back, if you’d asked me what I do, I’d probably say something like “teach literature and chase my kids around the house with a whiteboard.” But life has a funny way of reshaping your identity. Somewhere between homeschooling during snowstorms and testing outdoor gear on weekend mountain runs, I became the guy people texted when they wanted to know which product actually worked and which one wasn’t worth their money.
Now based in Colorado, Timothy continues to live at the intersection of learning and adventure. When he’s not writing or field-testing new gear, you’ll find him chasing fresh powder, fixing something in the garage, or helping his kids with their latest science project. He believes the best reviews come from lived experience and that practical advice is always better when it’s honest, humble, and a little bit fun.
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