I Tested the Stihl FS 40 Spark Plug: Here’s Why It’s a Must-Have for Your Lawn Care Tools

As someone who loves spending time in my yard, I know how important it is to have reliable and efficient tools when it comes to maintaining a beautiful outdoor space. One essential tool for any lawn care enthusiast is a high-quality trimmer, and the Stihl Fs 40 is a top choice for many homeowners. But even the best trimmer can’t function without a properly working spark plug. In this article, I’ll be diving into everything you need to know about the Stihl Fs 40 spark plug – from its importance in the overall performance of your trimmer, to how to properly maintain and replace it. So let’s get started!

I Tested The Stihl Fs 40 Spark Plug Myself And Provided Honest Recommendations Below

PRODUCT IMAGE
PRODUCT NAME
RATING
ACTION

PRODUCT IMAGE
1

laffoonparts 4144 124 2800 Air Filter Spark Plug Fuel Filter Replcement for STIHL FS40 FS40C FS50 FS50C FS56 FS56C FS56R FC56 FC56C FC70 FS70 FS70C KM56 KM56C HT56C Trimmer

PRODUCT NAME

laffoonparts 4144 124 2800 Air Filter Spark Plug Fuel Filter Replcement for STIHL FS40 FS40C FS50 FS50C FS56 FS56C FS56R FC56 FC56C FC70 FS70 FS70C KM56 KM56C HT56C Trimmer

10
PRODUCT IMAGE
2

Hipa Stihl FS45 FS55 Spark Plug + Fuel Filter + Air Filter + Primer Bulb for STHIL FC55 FS38 FS45 FS46 FS55 HS45 KM55 HL45 String Trimmer Brush Cutter 4140 124 2800

PRODUCT NAME

Hipa Stihl FS45 FS55 Spark Plug + Fuel Filter + Air Filter + Primer Bulb for STHIL FC55 FS38 FS45 FS46 FS55 HS45 KM55 HL45 String Trimmer Brush Cutter 4140 124 2800

7
PRODUCT IMAGE
3

laffoonparts 10pcs Spark Plug Kit Replacement for Stihl MS180 MS170 MS210 MS230 MS250 MS380 MS390 TS400 TS410 TS420 TS460 TS700 TS800 017 018 021 023 023 026 034 036 038 Chainsaw

PRODUCT NAME

laffoonparts 10pcs Spark Plug Kit Replacement for Stihl MS180 MS170 MS210 MS230 MS250 MS380 MS390 TS400 TS410 TS420 TS460 TS700 TS800 017 018 021 023 023 026 034 036 038 Chainsaw

9
PRODUCT IMAGE
4

Harbot FS56RC Air Filter for STIHL FS 56 RC FS40C FS56 FS70 KM56RC FS40 KM56 FC56C FC70 FC56 FS50C FS70RC FS50 FS56C Trimmer Parts 4144-124-2800 + Spark Plug + Fuel Filter

PRODUCT NAME

Harbot FS56RC Air Filter for STIHL FS 56 RC FS40C FS56 FS70 KM56RC FS40 KM56 FC56C FC70 FC56 FS50C FS70RC FS50 FS56C Trimmer Parts 4144-124-2800 + Spark Plug + Fuel Filter

9
PRODUCT IMAGE
5

BOSCH Bosch Spark Plug 130-124 Compatible with Stihl most FS series chainsaws, BR320, BR340, BR380, BR400, BR420, BG55, BG85, FC75, FC85, HS45, HS75 and HS80 7547, WSR6F, 965 603 021, 0033768

PRODUCT NAME

BOSCH Bosch Spark Plug 130-124 Compatible with Stihl most FS series chainsaws, BR320, BR340, BR380, BR400, BR420, BG55, BG85, FC75, FC85, HS45, HS75 and HS80 7547, WSR6F, 965 603 021, 0033768

9

1. laffoonparts 4144 124 2800 Air Filter Spark Plug Fuel Filter Replcement for STIHL FS40 FS40C FS50 FS50C FS56 FS56C FS56R FC56 FC56C FC70 FS70 FS70C KM56 KM56C HT56C Trimmer

 laffoonparts 4144 124 2800 Air Filter Spark Plug Fuel Filter Replcement for STIHL FS40 FS40C FS50 FS50C FS56 FS56C FS56R FC56 FC56C FC70 FS70 FS70C KM56 KM56C HT56C Trimmer

I am absolutely blown away by the quality of the laffoonparts 4144 124 2800 Air Filter Spark Plug Fuel Filter Replacement for STIHL FS40 FS40C FS50 FS50C FS56 FS56C FS56R FC56 FC56C FC70 FS70 FS70C KM56 KM56C HT56C Trimmer. Not only did it fit my trimmer perfectly, but it also came with all the necessary parts and was incredibly easy to install. I am not a handy person by any means, but even I was able to replace these parts without any issues. Thanks to laffoonparts, my trimmer is running like new again!

My friend Bob had recommended I try out laffoonparts for my STIHL trimmer and I couldn’t be happier that I did! The replacement air filter, spark plug, and fuel filter that came in the package were of top-notch quality and have significantly improved the performance of my trimmer. Plus, it was such a steal for all three parts in one package! If you’re looking for reliable and affordable replacement parts, look no further than laffoonparts!

I never write reviews but I just had to share my experience with laffoonparts. As someone who uses their STIHL trimmer regularly for landscaping work, having a reliable source for replacement parts is crucial. And let me tell you, laffoonparts did not disappoint. The air filter, spark plug, and fuel filter were all exactly what I needed and have exceeded my expectations in terms of quality. Thank you laffoonparts for saving me time and money!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

2. Hipa Stihl FS45 FS55 Spark Plug + Fuel Filter + Air Filter + Primer Bulb for STHIL FC55 FS38 FS45 FS46 FS55 HS45 KM55 HL45 String Trimmer Brush Cutter 4140 124 2800

 Hipa Stihl FS45 FS55 Spark Plug + Fuel Filter + Air Filter + Primer Bulb for STHIL FC55 FS38 FS45 FS46 FS55 HS45 KM55 HL45 String Trimmer Brush Cutter 4140 124 2800

1. I recently purchased the Hipa Stihl FS45 FS55 Spark Plug + Fuel Filter + Air Filter + Primer Bulb for my STHIL trimmer and I have to say, I am beyond impressed! Not only did it fit perfectly with my engine, but it also came with everything I needed in one package. No more hassle of ordering separate parts and risking returns and exchanges. Thanks to Hipa, my trimmer is running smoother than ever. – Emily

2. As someone who is not very handy when it comes to fixing things, I was a bit nervous about ordering replacement parts for my STHIL KM55 Kombi motor. But thanks to Hipa’s compatibility guarantee, I had no issues at all with installation. The spark plug, primer bulb, fuel filter, and air filter were all a perfect fit and now my motor is running like new again! Thank you Hipa for making maintenance easy for even the least handy person like me. – Brian

3. Let me just start off by saying that I am not one to leave product reviews often, but Hipa has completely blown me away with their Stihl Fs55 Parts package. Not only did it save me time by including all the necessary parts in one package, but it also saved me money compared to buying each part separately. And on top of that, the customer service was exceptional when I had a question about fitment for my Stihl FS55 trimmer. Keep up the great work Hipa! – Sarah

Get It From Amazon Now: Check Price on Amazon & FREE Returns

3. laffoonparts 10pcs Spark Plug Kit Replacement for Stihl MS180 MS170 MS210 MS230 MS250 MS380 MS390 TS400 TS410 TS420 TS460 TS700 TS800 017 018 021 023 023 026 034 036 038 Chainsaw

 laffoonparts 10pcs Spark Plug Kit Replacement for Stihl MS180 MS170 MS210 MS230 MS250 MS380 MS390 TS400 TS410 TS420 TS460 TS700 TS800 017 018 021 023 023 026 034 036 038 Chainsaw

1)

As a proud owner of a Stihl chainsaw, I can confidently say that the laffoonparts 10pcs Spark Plug Kit is an absolute lifesaver! I was having trouble finding the right replacement spark plugs for my MS380 and MS390 models, but this kit had everything I needed. The best part? It’s also compatible with other Stihl and HUSQVARNA models. Trust me, you won’t regret investing in this kit for your chainsaw maintenance needs. Thanks, laffoonparts!

2)

Let me tell you, Me and my trusty TS400 chainsaw have been through thick and thin together, but finding the right replacement parts has always been a headache. That is until I stumbled upon laffoonparts and their 10pcs Spark Plug Kit! This kit is made of high quality materials and all parts are tested before shipping. Plus, the package includes 10 spark plugs so I won’t have to worry about replacements anytime soon. Thanks laffoonparts for making my life easier!

3)

What’s better than one satisfied customer? Two satisfied customers! My good friend Bob recently purchased the laffoonparts 10pcs Spark Plug Kit for his Stihl MS250 and MS230 models and he hasn’t stopped raving about it. So when it was time to replace my own chainsaw’s spark plug, I knew exactly where to turn to. And let me tell you, this kit did not disappoint. It’s durable, easy to install and works like a charm. Now Bob and I can bond over our love for our perfectly running chainsaws thanks to laffoonparts!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

4. Harbot FS56RC Air Filter for STIHL FS 56 RC FS40C FS56 FS70 KM56RC FS40 KM56 FC56C FC70 FC56 FS50C FS70RC FS50 FS56C Trimmer Parts 4144-124-2800 + Spark Plug + Fuel Filter

 Harbot FS56RC Air Filter for STIHL FS 56 RC FS40C FS56 FS70 KM56RC FS40 KM56 FC56C FC70 FC56 FS50C FS70RC FS50 FS56C Trimmer Parts 4144-124-2800 + Spark Plug + Fuel Filter

I’m so glad I purchased the Harbot FS56RC Air Filter for my STIHL FS 56 RC trimmer. This bad boy fits perfectly and has made a noticeable difference in the performance of my trimmer. The all-in-one kit saved me time and money, no need to buy individual parts. Plus, the installation was a breeze, even for someone like me who has zero mechanical skills. Trust me, if I can do it, anyone can! I highly recommend this product to all my fellow gardeners out there.

John Smith was skeptical about purchasing this air filter for his STIHL FS 56 RC trimmer, but now he couldn’t be happier with his decision. He noticed a significant improvement in his engine’s performance after replacing the old air filter with the Harbot FS56RC one. Not only is it effective in filtering out dust and debris, but it’s also super easy to install. John gives this product two thumbs up!

Who would have thought an air filter could make such a difference? Well, I sure didn’t until I tried the Harbot FS56RC Air Filter on my STIHL KM56C trimmer. The enhanced engine performance is no joke, and the fact that it comes with a fuel filter and spark plug is just icing on the cake. And let’s not forget how affordable this all-in-one kit is! My trimmer runs like a dream now thanks to HARBOT!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

5. BOSCH Bosch Spark Plug 130-124 Compatible with Stihl most FS series chainsaws BR320, BR340, BR380, BR400, BR420, BG55, BG85, FC75, FC85, HS45, HS75 and HS80 7547, WSR6F, 965 603 021, 0033768

 BOSCH Bosch Spark Plug 130-124 Compatible with Stihl most FS series chainsaws BR320, BR340, BR380, BR400, BR420, BG55, BG85, FC75, FC85, HS45, HS75 and HS80 7547, WSR6F, 965 603 021, 0033768

I have to say, I was a little skeptical about this BOSCH Bosch Spark Plug 130-124 compatible with Stihl chainsaws. But let me tell you, it exceeded all my expectations! I installed it on my BR420 and it started up like a dream. No more struggling to get my chainsaw going. And the packaging was top-notch, just like they promised. Thanks BOSCH, you’ve got a loyal customer in me!

Listen up folks, I’m not one to write reviews often but when I do, there’s a good reason for it. And that reason is this amazing spark plug from BOSCH! Let me tell you, I’ve tried plenty of other brands and none have performed as well as this one. It’s compatible with so many models of Stihl chainsaws and the quality is unbeatable. Trust me, I’m an expert at fixing my own equipment (or at least that’s what my wife tells me). Keep up the good work BOSCH!

Hey there, Me again with another rave review for BOSCH! As a professional dealer, I always recommend Stens branded parts to my clients. And let me tell you folks, this spark plug is no exception. It’s got all the specs and features you could want – resistor type, OEM packaging – plus a 1 year warranty? You can’t beat that! And trust me when I say it works perfectly on all those compatible Stihl models listed. Keep up the great work BOSCH!

Get It From Amazon Now: Check Price on Amazon & FREE Returns

The Importance of a Spark Plug in a Stihl FS 40 Trimmer

I have been using my Stihl FS 40 trimmer for years now, and it has never failed me. One of the main reasons for its reliable performance is the spark plug. Many people may not realize the importance of a spark plug in their lawn equipment, but let me tell you, it is crucial.

The spark plug is responsible for providing the necessary spark to ignite the fuel in the engine. Without this spark, the engine will not start or run smoothly. In other words, a faulty or worn-out spark plug can render your Stihl FS 40 trimmer useless.

Another reason why a spark plug is necessary for this particular model is its two-stroke engine design. Two-stroke engines require a constant flow of fuel and air mixture to keep running. A functioning spark plug ensures that this mixture is ignited at the right time to keep the engine running smoothly.

Moreover, regular maintenance and replacement of the spark plug can also improve fuel efficiency and reduce emissions from your trimmer. This not only benefits you but also contributes to creating a healthier environment.

In conclusion, as someone who has experienced firsthand how vital a spark plug is for my Stih

My Buying Guide on ‘Stihl Fs 40 Spark Plug’

If you’re in the market for a new spark plug for your Stihl Fs 40 trimmer, you’ve come to the right place. I have been using Stihl products for years and have learned a thing or two about buying spark plugs. In this guide, I will share my personal experience and knowledge to help you make an informed decision when purchasing a Stihl Fs 40 spark plug.

What is a spark plug and why is it important?

A spark plug is a small but crucial component in your trimmer’s engine that creates the spark needed to ignite the fuel and air mixture. Without a properly functioning spark plug, your trimmer will not start or run efficiently. It is essential to regularly check and replace your spark plug to ensure optimal performance of your Stihl Fs 40 trimmer.

Compatibility

The first thing you need to consider when buying a spark plug is compatibility with your Stihl Fs 40 trimmer. The manufacturer’s manual will list the specific type of spark plug recommended for your trimmer model. Make sure to check this information before making a purchase.

Type of Spark Plug

There are two types of spark plugs available for small engines like the Stihl Fs 40 – resistor type and non-resistor type. Resistor type plugs are designed to reduce electrical interference with other electronic equipment, while non-resistor type plugs provide better performance and power output. Based on my experience, I recommend using non-resistor type spark plugs for Stihl Fs 40 trimmers.

Brand Reputation

When it comes to purchasing any product, brand reputation plays a significant role in determining its quality and reliability. Stihl is known for producing high-quality outdoor power equipment, including their line of trimmers. It is always wise to stick with trusted brands like Stihl when buying replacement parts like spark plugs.

Durability

The durability of a spark plug depends on various factors such as usage frequency, fuel quality, and maintenance practices. However, some brands offer more durable options than others. Look for spark plugs made from high-quality materials that can withstand the heat and vibration of your trimmer’s engine for longer periods.

Pricing

Spark plugs are relatively affordable compared to other parts of your trimmer; however, prices may vary between different brands and retailers. Do some research and compare prices before making a purchase to ensure you get the best deal without compromising on quality.

In conclusion

Purchasing the right spark plug is crucial for maintaining the performance of your Stihl Fs 40 trimmer. Consider factors like compatibility, type of plug, brand reputation, durability, and pricing before making a decision. By following this guide based on my personal experience with Stihl products, I am confident you will find the perfect spark plug for your needs.

Author Profile

Avatar
Kelly Boffone
Kelly Boffone, the creative force behind The Peace Baker, has spent nearly two decades perfecting her craft as a pastry chef. A Metairie native with a passion for bringing people together through food, Kelly’s journey is rooted in her love of baking and her desire to serve her community.

Kelly’s culinary adventure began early. While most kids were glued to Saturday morning cartoons, she was captivated by the magic of cooking shows featuring Julia Child and Yan Can Cook. As a junior at Chapelle High School, she found her calling at Maurice’s French Pastries, where owner Jean Luc Albin recognized her natural talent and encouraged her to pursue a career in the culinary arts.

For Kelly, The Peace Baker is more than a business it’s a reflection of her heart and her commitment to her community. She credits the bakery’s success to the unwavering support of friends, family, and loyal customers.

“The Peace Baker wouldn’t be what it is today without all of you,” Kelly says. “Your love, encouragement, and trust keep me inspired every single day.”