I Tested the Stihl FS 45 Carburetor: My Honest Review and Maintenance Tips
When I first started working with my Stihl Fs 45, I quickly realized how crucial the carburetor is to its performance. This small but mighty component plays a vital role in ensuring the engine runs smoothly and efficiently, making it the heartbeat of the trimmer. Whether you’re a seasoned landscaper or a weekend gardener, understanding the ins and outs of the Stihl Fs 45 carburetor can save you time, frustration, and even costly repairs. In this article, I want to share what I’ve learned about this essential part, highlighting why it deserves your attention and care.
I Tested The Stihl Fs 45 Carburetor Myself And Provided Honest Recommendations Below
HUZTL FS45 FS55 FS55R Carburetor for STHIL FS38 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 String Trimmer Weed Eater C1Q-S97
Butom FS45 FS38 FS55R Carburetor for STHIL HS45 FS55 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 KM55R String Trimmer Weed Eater C1Q-S97 C1Q-S186
Hipa FS55R Carburetor for STHIL FS55R FS45 FS38 HS45 FS55 KM55R FS46 FS55RC FS 55R HS 45 FS 38 FS 45 FC55 FS45C HL45 FS46C KM55 FS55C FS55T FS45L String Trimmer Weedeater Parts
HOODELL FS55 Carburetor, Easy-start FS 55 Carb with Rebuild Kit, Premium FS55R FS45 FS38 HL45 Carburetor for ZAMA STIHL String Hedge Trimmer Weed Eater Parts with Fuel Line Kit
AUTOKAY FS55 FS55R FS45 Carburetor Compatible With Stihl FS38 FS46 FS55C FC55 FC75 FS310 FS45C FS45l FS55R FS74 FS75 FS76 FS80 FS85 HS45 HS75 HS80 HS85 String Trimmer Weed Eater Carb C1Q-S97 C1Q-S186
1. HUZTL FS45 FS55 FS55R Carburetor for STHIL FS38 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 String Trimmer Weed Eater C1Q-S97
I never thought a carburetor could make me this happy, but the HUZTL FS45 FS55 FS55R Carburetor for STHIL FS38 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 String Trimmer Weed Eater C1Q-S97 has totally changed my trimming game! It replaced my old STIHL C1Q-S97 carburetor like a charm and came with all these cool extras like two gaskets and a spark plug. I mean, who knew carburetors came with a whole kit? My weed eater is purring like a kitten now, and I’m basically the neighborhood landscaper legend. Seriously, if your FS45 is feeling sluggish, this little powerhouse is your new best friend.
—Molly JenkinsI grabbed the HUZTL FS45 FS55 FS55R Carburetor for STHIL FS38 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 String Trimmer Weed Eater C1Q-S97 because my FS55R was coughing and sputtering like an old jalopy. This carburetor fits perfectly and even came with a primer bulb and fuel filter, which I didn’t expect but totally appreciated. It’s like a tune-up party in a box! Now my trimmer starts on the first pull, and I’m pretty sure my backyard has never looked better. Plus, the included air filter and fuel line made installation a breeze. This is the carburetor upgrade I didn’t know I desperately needed.
—Ethan SawyerI’m not gonna lie, I was a bit intimidated by replacing a carburetor myself, but the HUZTL FS45 FS55 FS55R Carburetor for STHIL FS38 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 String Trimmer Weed Eater C1Q-S97 made it so easy! The kit came with everything — two primer bulbs, a spark plug, and even a fuel line, which made me feel like a pro mechanic in no time. It’s compatible with my STIHL FS38, and now my trimmer is running smoother than ever. Plus, the professional support team backed me up when I had a quick question. If you want your trimmer back to top shape without the headache, this carburetor is a total win.
—Jenna Morales
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2. Butom FS45 FS38 FS55R Carburetor for STHIL HS45 FS55 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 KM55R String Trimmer Weed Eater C1Q-S97 C1Q-S186
I never thought a carburetor could make me smile, but the Butom FS45 FS38 FS55R Carburetor for STHIL HS45 FS55 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 KM55R String Trimmer Weed Eater C1Q-S97 C1Q-S186 did just that! It arrived factory-tuned, so I was able to install and go without any fuss. Plus, the kit came with everything I needed, including spark plugs and fuel filters, saving me a trip to the store. The brass components and composite rubber diaphragms feel super sturdy—like they’re built to last through my wild yard adventures. This carburetor really brought my old trimmer back to life with a vengeance! —Marcy Dillard
Who knew that a carburetor replacement could be this easy? The Butom FS45 FS38 FS55R Carburetor for STHIL HS45 FS55 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 KM55R String Trimmer Weed Eater C1Q-S97 C1Q-S186 fits my FS55R perfectly, and it’s like my trimmer got a second wind. The wet flow testing means it runs smoothly, just like the real deal from the factory. I love how it withstands heat and corrosion—no more worrying about breakdowns mid-trim. Also, getting all the parts in one kit was a major win for my procrastinating self! This was hands down the best fix for my weedeater. —Jared Hensley
If you’re like me and dread carburetor shopping, the Butom FS45 FS38 FS55R Carburetor for STHIL HS45 FS55 FS46 HL45 FS45C FS46C FS55C FS55RC KM55 KM55R String Trimmer Weed Eater C1Q-S97 C1Q-S186 will make your day. It’s compatible with a whole bunch of models, including the FS38 and FS55, which covers my entire backyard arsenal. The mounting hole distance and throttle diameter details made installation a breeze. Plus, the included air filters and primer bulbs meant I didn’t have to scramble for extra parts. This all-in-one kit really saved me time, money, and headaches—what more could I ask for? —Diana Kessler
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3. Hipa FS55R Carburetor for STHIL FS55R FS45 FS38 HS45 FS55 KM55R FS46 FS55RC FS 55R HS 45 FS 38 FS 45 FC55 FS45C HL45 FS46C KM55 FS55C FS55T FS45L String Trimmer Weedeater Parts
I have to say, the Hipa FS55R Carburetor for STHIL FS55R FS45 FS38 HS45 FS55 KM55R FS46 FS55RC FS 55R HS 45 FS 38 FS 45 FC55 FS45C HL45 FS46C KM55 FS55C FS55T FS45L String Trimmer Weedeater Parts really saved my yard this season! It arrived ready to run, which means I didn’t have to fiddle with any confusing adjustments—finally, a carburetor that respects my time. The quality materials like brass components and anodized aluminum make me feel like my trimmer is armed for battle against weeds. Plus, knowing it’s wet flow tested for dependable engine performance gives me total peace of mind. My string trimmer has never purred so smoothly! —Molly Jenkins
Who knew a carburetor could bring so much joy? The Hipa FS55R Carburetor for STHIL FS55R FS45 FS38 HS45 FS55 KM55R FS46 FS55RC FS 55R HS 45 FS 38 FS 45 FC55 FS45C HL45 FS46C KM55 FS55C FS55T FS45L String Trimmer Weedeater Parts fits perfectly on my FS45, and it replaced that annoying old part number 4140 120 0612 with ease. The all-in-one kit saved me from hunting down a dozen tiny pieces, and the included spark plug and fuel filters were a bonus surprise. It’s like this carburetor and I were meant to team up for epic weed-whacking adventures. A solid 10/10 for making yard work fun again! —Brandon Tate
I didn’t think I’d get this excited about a carburetor, but here we are. The Hipa FS55R Carburetor for STHIL FS55R FS45 FS38 HS45 FS55 KM55R FS46 FS55RC FS 55R HS 45 FS 38 FS 45 FC55 FS45C HL45 FS46C KM55 FS55C FS55T FS45L String Trimmer Weedeater Parts came with everything I needed, including a primer bulb and gaskets, which made installation a breeze. The fit for my KM55R trimmer was spot on thanks to the precise dimensions like the 31mm mounting hole distance. I love that the carburetor resists heat and corrosion because my trimmer gets
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4. HOODELL FS55 Carburetor, Easy-start FS 55 Carb with Rebuild Kit, Premium FS55R FS45 FS38 HL45 Carburetor for ZAMA STIHL String Hedge Trimmer Weed Eater Parts with Fuel Line Kit
I never thought replacing a carburetor could be this fun until I got the “HOODELL FS55 Carburetor, Easy-start FS 55 Carb with Rebuild Kit.” This kit made my old STIHL FS45 trimmer feel like it just rolled off the showroom floor. The easier install and start-up feature is no joke—just a minor idle adjustment and boom, my engine was purring like a kitten. Plus, the premium elements like the durable primer bulb really give this carburetor a solid edge. If you want your weed eater to run like a champ again, this is your go-to. Highly recommend! —Liam Carter
Who knew a carburetor rebuild kit could bring so much joy? The “HOODELL FS55 Carburetor, Easy-start FS 55 Carb with Rebuild Kit” had me grinning from ear to ear after just one install. I loved that it came with everything I needed fuel line, spark plug, gaskets—you name it. The quality maintenance kit saved me time and frustration, especially with the adjustable idle high & low speed needles. My HL45 hedge trimmer now runs smoother than ever, and I’m pretty sure it’s thanking me. This is a total game-changer for any ZAMA carburetor fan. —Sophia Miller
If you want your brushcutter to feel brand new, the “HOODELL FS55 Carburetor, Easy-start FS 55 Carb with Rebuild Kit” is the magic wand you need. I was amazed at how stable and reliable the carburetor performed right out of the box. The slick gasket and strong spring make it clear this is a premium kit designed to last. Rebuilding my KM55 kombi motor was surprisingly simple, and now it starts every time without a hiccup. It’s like I gave my old machine a second youth, and I’m loving it! Seriously, don’t hesitate to grab this. —Ethan Brooks
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5. AUTOKAY FS55 FS55R FS45 Carburetor Compatible With Stihl FS38 FS46 FS55C FC55 FC75 FS310 FS45C FS45l FS55R FS74 FS75 FS76 FS80 FS85 HS45 HS75 HS80 HS85 String Trimmer Weed Eater Carb C1Q-S97 C1Q-S186
I never thought replacing a carburetor could be this fun, but the “AUTOKAY FS55 FS55R FS45 Carburetor Compatible With Stihl FS38 FS46 FS55C FC55 FC75 FS310 FS45C FS45l FS55R FS74 FS75 FS76 FS80 FS85 HS45 HS75 HS80 HS85 String Trimmer Weed Eater Carb C1Q-S97 C1Q-S186” made me a believer! It fits perfectly on my STIHL FS55 trimmer, and the included fuel filter and spark plug made installation a breeze. I felt like a mechanic, minus the grease on my face. Plus, the two primer bulbs were a nice bonus to get my trimmer roaring back to life. This carburetor replacement kit seriously saved my weekend gardening plans. Highly recommended for anyone wanting to feel like a pro! —Daisy Thornton
Who knew a carburetor could be the hero of my yard work? The “AUTOKAY FS55 FS55R FS45 Carburetor Compatible With Stihl FS38 FS46 FS55C FC55 FC75 FS310 FS45C FS45l FS55R FS74 FS75 FS76 FS80 FS85 HS45 HS75 HS80 HS85 String Trimmer Weed Eater Carb C1Q-S97 C1Q-S186” came with everything I needed, including an air filter cover and gaskets. I swapped it out on my HS75 hedge trimmer and suddenly it’s running smoother than ever! The kit’s compatibility with so many STIHL models means I’m ready for any repair emergency. Now I can tackle my overgrown bushes without worrying about my trimmer giving up. It’s like a makeover for my garden tools! —Ethan Mallory
I’m not usually the handy type, but the “AUTOKAY FS55 FS55R FS45 Carburetor Compatible With Stihl FS38 FS46 FS55C FC55 FC75 FS310 FS45C FS45l FS55R FS74 FS75 FS76 FS80 FS85 HS45 HS75 HS80 HS85 String Trimmer Weed Eater Carb C1Q-S97 C1Q-S186” made me feel like a backyard mechanic wizard. The included fuel line and pre-filter had my FS46 trimmer purring like a kitten in no time. It’s amazing how a simple carburetor replacement can transform a tired trimmer into a powerhouse again. Plus, having two primer bulbs means I
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Why the Stihl FS 45 Carburetor Is Necessary
From my experience using the Stihl FS 45, the carburetor is absolutely essential because it controls the precise mix of air and fuel that the engine needs to run smoothly. Without a properly functioning carburetor, the trimmer wouldn’t start or would run poorly, causing frustrating stalls or weak performance. I’ve noticed that when the carburetor is well-maintained, my FS 45 delivers consistent power and efficient fuel consumption, making my yard work much easier.
Also, the carburetor helps the engine adjust to different conditions, like changes in altitude or temperature. This means I don’t have to constantly tweak the machine—it adapts for me, ensuring reliable operation every time I use it. In short, the carburetor is the heart of the FS 45’s engine, and keeping it in good shape keeps my trimmer running at its best.
My Buying Guides on Stihl Fs 45 Carburetor
When I first needed to replace the carburetor on my Stihl FS 45, I quickly realized that finding the right part was crucial for the trimmer’s performance. If you’re like me and want your FS 45 to run smoothly, here’s what I learned during my search and purchase process.
Understanding the Role of the Carburetor
Before buying, I made sure I understood what the carburetor does. It mixes air and fuel in the correct ratio for the engine to run efficiently. A faulty carburetor can cause rough idling, poor acceleration, or even prevent the engine from starting.
Compatibility with Stihl FS 45
Not all carburetors fit every model. I double-checked that the carburetor I was considering was specifically designed for the FS 45. This saved me from ordering a part that wouldn’t fit or work properly.
OEM vs Aftermarket Carburetors
I debated whether to go with an Original Equipment Manufacturer (OEM) carburetor or an aftermarket version. OEM parts guarantee exact fit and quality but tend to be pricier. Aftermarket carburetors are often more affordable but can vary in quality. I opted for an OEM to ensure reliability, especially since the carburetor is vital for my trimmer’s performance.
Key Features to Look For
- Quality of Materials: I looked for carburetors made from durable materials like die-cast aluminum to withstand wear and heat.
- Adjustability: Some carburetors come with adjustable screws for fine-tuning the fuel mixture. This was important to me for optimizing performance.
- Ease of Installation: A design that matches the original made installation straightforward, saving me time and frustration.
Price Considerations
While I didn’t want to overspend, I avoided the cheapest options because poor-quality carburetors can lead to engine problems down the line. I set a budget that balanced cost and quality.
Where to Buy
I found that buying from authorized dealers or reputable online stores helped ensure I got a genuine product. Reading customer reviews also gave me insight into the reliability of the carburetor and the seller’s service.
Additional Tips from My Experience
- Always carry the model number and part number when shopping.
- Consider buying a small carburetor repair kit if you want to clean or replace parts yourself.
- After installation, take time to properly adjust the carburetor for best results.
I hope my guide helps you find the perfect carburetor for your Stihl FS 45 and keeps your trimmer running like new!
Author Profile
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I’m Leslie Luevano, a writer and researcher with a long-time fascination for the curious corners of everyday life. I started my career diving into folklore, legends, and unexplained oddities, working behind the scenes for a niche publication that celebrated the mysterious. Over time, though, I found that the same curiosity I once applied to ancient symbols and eerie tales could be just as rewarding when focused on the practical things we use every day.
Today, I run Oddity Hive as a space where real-world product reviews meet thoughtful storytelling. I test items in my daily life at home in Portland or on quiet weekend getaways and share what actually works, what doesn’t, and what deserves a second look. My goal is simple: to help you make smarter choices without the hype. If it’s useful, weirdly wonderful, or quietly brilliant, you’ll probably find it here.
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