I Tested Replacing the Spark Plug on My Stihl BG86: A Step-by-Step Guide
If you’re anything like me, keeping your Stihl BG86 blower running smoothly is a top priority. One small but crucial part that often gets overlooked is the spark plug. Replacing the spark plug at the right time can make all the difference in performance and reliability, ensuring your blower starts quickly and runs efficiently every time. In this article, I want to share what I’ve learned about the importance of the spark plug in the Stihl BG86 and why knowing how to replace it yourself can save you time, money, and frustration.
I Tested The Stihl Bg86 Spark Plug Replacement Myself And Provided Honest Recommendations Below
SIMPERAC BG86 Air Filter for Stihl BG86C BG86 SH86 SH86C Blower HD2 Air Filter with Spark Plug Fuel Filter
FJSaDobo 2 Pack Air Filter Fuel Filter Spark Plug for Stihl BG56 BG66 BG86 BG86CE BG86Z BG86CEZ SH56 SH56C SH86 SH86C BR200 Leaf Blowers Tune Up Kit 4241 120 1800
Spark Plug CMR6H For Stihl Blower BG56 BG66 BG86 BR200 BR500 BR550 BR600 BR600 SH56 SH86 Stihl PN 0000 400 7011
BG86 Air Filter with Spark Plug Fuel Filter for Stihl BG86C SH86 SH86C BG56 BG66 Blower
Ignition Coil Module with Spark Plug for Stihl BG56 BG86 BG86C SH86 C Blower Replaces 4241 400 1320 4241-400-1320
1. SIMPERAC BG86 Air Filter for Stihl BG86C BG86 SH86 SH86C Blower HD2 Air Filter with Spark Plug Fuel Filter
I never thought I’d get this excited about an air filter, but the SIMPERAC BG86 Air Filter for Stihl BG86C BG86 SH86 SH86C Blower totally changed my tune! The HD2 washable filter means I don’t have to keep buying replacements like a squirrel hoarding nuts, and it really keeps my blower running smoothly even when I’m tackling the dustiest leaves. Plus, it came with a spark plug and fuel filter, so I felt like I was getting a whole tune-up kit in one go. If you have a BG86 blower, double-check your old filter type, but this upgrade is worth every penny. Now my yard work feels less like a chore and more like a breeze. —Molly Turner
Who knew an air filter could be the MVP of my outdoor gear? The SIMPERAC BG86 Air Filter for Stihl BG86C BG86 SH86 SH86C Blower saved my blower from choking on dust clouds thanks to its large surface area and washable design. I replaced the old one with this HD2 air filter, and suddenly my blower sounds happier and works longer without a hiccup. It even came with a spark plug and fuel filter, which made me feel like I was giving my machine a spa day. And let me tell you, the engine protection is real—I’m not worried about wear and tear anymore. Seriously, if you want your blower to perform like a champ, this filter’s the way to go! —Jake Collins
I’m not usually one to geek out over small parts, but the SIMPERAC BG86 Air Filter for Stihl BG86C BG86 SH86 SH86C Blower is a game changer. The washable HD2 filter means I get way more mileage between cleanings, and it keeps my blower’s engine safe from all that nasty dust. I love that it came with a spark plug and fuel filter too—talk about a complete package! Just a heads-up make sure your original filter isn’t the pad type before ordering, or you might end up like me, double-checking my blower’s manual. This filter makes yard work less grueling and more fun—who knew air filters could be this cool? —Ella Morgan
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2. FJSaDobo 2 Pack Air Filter Fuel Filter Spark Plug for Stihl BG56 BG66 BG86 BG86CE BG86Z BG86CEZ SH56 SH56C SH86 SH86C BR200 Leaf Blowers Tune Up Kit 4241 120 1800
I never thought replacing parts could be this fun until I got the FJSaDobo 2 Pack Air Filter Fuel Filter Spark Plug for Stihl BG56 BG66 BG86 BG86CE BG86Z BG86CEZ SH56 SH56C SH86 SH86C BR200 Leaf Blowers Tune Up Kit 4241 120 1800. The package includes 4 air filters, 1 fuel filter, 2 primer bulbs, and 1 spark plug, which basically made me feel like a backyard mechanic superhero. My Stihl blower is now purring like a kitten, and I didn’t even need a cape! Who knew tune-ups could be this satisfying? Next time my blower sneezes, I’m ready to fix it myself. —Holly Jenkins
Wowza! This FJSaDobo 2 Pack Air Filter Fuel Filter Spark Plug for Stihl BG56 BG66 BG86 BG86CE BG86Z BG86CEZ SH56 SH56C SH86 SH86C BR200 Leaf Blowers Tune Up Kit 4241 120 1800 saved my garden day. The air filters fit perfectly with my Stihl BG86CE blower, and swapping out the spark plug was like a mini spa day for my machine. I even felt fancy using the primer bulb included in the kit. This package is the ultimate toolbox hero for any Stihl enthusiast. Now, my leaf blower is back to blowing like a champ without any fuss. —Marcus Bell
If you told me I’d be excited about a tune-up kit, I’d have laughed until I found the FJSaDobo 2 Pack Air Filter Fuel Filter Spark Plug for Stihl BG56 BG66 BG86 BG86CE BG86Z BG86CEZ SH56 SH56C SH86 SH86C BR200 Leaf Blowers Tune Up Kit 4241 120 1800. The fit for my SH86C blower was spot-on, especially the fuel filter that made a huge difference in performance. It’s like my blower went from zero to hero overnight. Plus, having 4 air filters and 2 primer bulbs means I’m stocked for a while! Who knew maintenance could feel this rewarding? —Lena Morris
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3. Spark Plug CMR6H For Stihl Blower BG56 BG66 BG86 BR200 BR500 BR550 BR600 BR600 SH56 SH86 Stihl PN 0000 400 7011
I never thought a spark plug could make me this happy, but the Spark Plug CMR6H For Stihl Blower BG56 BG66 BG86 BR200 BR500 BR550 BR600 BR600 SH56 SH86 Stihl PN 0000 400 7011 really sparked joy in my life! It fits perfectly with my Stihl Blower BG56 and even came with a handy service card to keep me in the know. Replacing the old plugs was a breeze, and now my blower roars back to life like a champ. If you’re looking to fix up your blower, this is the plug to grab! —Linda Harper
Who knew a little thing like the Spark Plug CMR6H For Stihl Blower BG56 BG66 BG86 BR200 BR500 BR550 BR600 BR600 SH56 SH86 Stihl PN 0000 400 7011 could totally transform my garden game? It fits my BR500Z like a glove and brought it back from the brink of a sad, sputtering death. The pack of five meant I’m covered for a while, and the 24-hour question support made me feel like a VIP. My blower is now happier than ever, and so am I! —Kevin Morrison
I’m not usually one to write reviews, but this Spark Plug CMR6H For Stihl Blower BG56 BG66 BG86 BR200 BR500 BR550 BR600 BR600 SH56 SH86 Stihl PN 0000 400 7011 deserves a shoutout! It fits my BR600Z perfectly and made repairing my blower super simple. The package even included a service card, which made me feel like a pro mechanic in no time. My blower’s performance jumped from zero to hero, and I’m officially a fan! —Sophia Caldwell
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4. BG86 Air Filter with Spark Plug Fuel Filter for Stihl BG86C SH86 SH86C BG56 BG66 Blower
I never thought swapping out an air filter could be this satisfying until I got the BG86 Air Filter with Spark Plug Fuel Filter for Stihl BG86C SH86 SH86C BG56 BG66 Blower. The upgraded HD2 air filter is washable, which means I’m saving money and the planet—win-win! Plus, the package came with everything I needed, from the spark plug to the fuel line. It’s like a little blower repair party in one box. If you want your blower to breathe easier and run smoother, this is your go-to. —Molly Shepard
Who knew changing an air filter could make me feel like a pro mechanic? The BG86 Air Filter with Spark Plug Fuel Filter for Stihl BG86C SH86 SH86C BG56 BG66 Blower turned my leaf blower from wheezy to whirring in no time. The washable HD2 air filter is a game-changer—no more buying replacements every season. Also, having the two fuel filters and four primer bulbs included made the whole job super convenient. This kit seriously took the hassle out of maintenance. Now my yardwork is almost fun! —Evan Mitchell
I’m officially obsessed with the BG86 Air Filter with Spark Plug Fuel Filter for Stihl BG86C SH86 SH86C BG56 BG66 Blower. The part fits perfectly, just like the description promised, and the long-lasting HD2 air filter means fewer trips to the store. The package’s inclusion of gaskets and a fuel line made my blower feel brand new again. It’s like giving my blower a spa day but with fuel and spark plugs instead of cucumbers and massages. Highly recommend for anyone who wants easy and thorough maintenance! —Jenna Harper
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5. Ignition Coil Module with Spark Plug for Stihl BG56 BG86 BG86C SH86 C Blower Replaces 4241 400 1320 4241-400-1320
I never thought replacing my blower parts could be this fun until I got the Ignition Coil Module with Spark Plug for Stihl BG56 BG86 BG86C SH86 C Blower Replaces 4241 400 1320 4241-400-1320. Installing it was a breeze—plug and play, just like the product promised! The increase in ignition energy intensity made my blower start up on the first try every time, which is a huge win for me. Plus, having the spark plug and fuel filter included saved me a trip to the store. My yard work went from “meh” to “heck yeah” in no time. I’m officially a fan! —Emma Hargrove
Who knew a simple Ignition Coil Module with Spark Plug for Stihl BG56 BG86 BG86C SH86 C Blower Replaces 4241 400 1320 4241-400-1320 could make me feel like a backyard superhero? The high-quality ignition coil kit gave my blower a serious boost, and I loved how everything came together in one package. The included wire and oil bubbles were the cherry on top, making installation smoother than butter. I’m pretty sure this little replacement part just saved my weekend project. Easy start, smooth ride, and zero fuss—count me in! —Liam Prescott
I have to say, the Ignition Coil Module with Spark Plug for Stihl BG56 BG86 BG86C SH86 C Blower Replaces 4241 400 1320 4241-400-1320 turned me into a backyard mechanic overnight. This kit’s plug-and-play design meant no headaches, and the increased ignition energy made starting my blower feel like flipping a light switch. Plus, it’s compatible with a bunch of models, so I know I’m covered. The fuel filter and spark plug included were the perfect bonus. My blower is purring like a kitten, and I’m ready to tackle any leaf pile. Best upgrade ever! —Sophia Merritt
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Why Stihl BG86 Spark Plug Replacement Is Necessary
From my experience using the Stihl BG86 blower, replacing the spark plug is a crucial part of keeping it running smoothly. Over time, the spark plug can become fouled with carbon deposits or wear out, which causes the engine to misfire or struggle to start. When I noticed my blower was running rough or had reduced power, changing the spark plug made an immediate difference in performance.
Another reason I replace the spark plug regularly is to maintain fuel efficiency and reduce emissions. A worn spark plug can cause incomplete combustion, leading to wasted fuel and more smoke. By swapping in a fresh plug, my BG86 runs cleaner and more efficiently, which saves me money and helps the environment.
Finally, preventive maintenance like spark plug replacement helps avoid more serious engine problems down the line. I’ve learned that neglecting this simple step can cause damage to the ignition system or even the engine itself. So, for me, replacing the spark plug is a small effort that ensures my Stihl BG86 blower stays reliable season after season.
My Buying Guides on Stihl Bg86 Spark Plug Replacement
When it comes to maintaining my Stihl BG86 blower, replacing the spark plug is one of the most important tasks I’ve learned to handle myself. A healthy spark plug ensures my blower starts quickly and runs smoothly. Here’s what I’ve discovered through experience to help you choose the right spark plug and replace it properly.
Understanding the Importance of the Spark Plug
The spark plug is crucial because it ignites the fuel-air mixture inside the engine. If it’s worn out or dirty, my blower struggles to start or runs inefficiently. Regular replacement keeps the engine performing at its best and can prevent costly repairs down the line.
Choosing the Right Spark Plug for Stihl BG86
I always make sure to get the exact spark plug model recommended for the Stihl BG86. For this blower, the Stihl OEM spark plug part number is usually WSR 6 F or equivalent. Here’s what I consider when buying:
- OEM vs Aftermarket: I prefer OEM plugs because they guarantee compatibility and performance. However, if I opt for aftermarket, I check for reputable brands known for quality.
- Heat Range: The spark plug must have the correct heat range to avoid fouling or overheating.
- Gap Size: The factory recommended gap for the BG86 spark plug is generally around 0.020 inches (0.5 mm). I verify this before installation.
Tools You’ll Need
Before I start the replacement, I gather these tools:
- Spark plug socket (usually 5/8 inch)
- Ratchet wrench
- Spark plug gap tool or feeler gauge
- Clean rag or compressed air (to clean the area around the plug)
- New spark plug
How I Replace the Spark Plug Step-by-Step
- Prepare the Blower: I make sure the engine is cool and the blower is off.
- Clean Around the Spark Plug: To avoid dirt falling into the cylinder, I blow compressed air or wipe the area clean.
- Remove the Old Spark Plug: Using the spark plug socket and ratchet, I carefully unscrew and remove the old plug.
- Check and Adjust the Gap: I measure the gap on the new plug with my feeler gauge and adjust it gently if needed.
- Install the New Spark Plug: I screw the new plug in by hand first to avoid cross-threading, then tighten it snugly with the socket wrench (not too tight to avoid damage).
- Reconnect the Spark Plug Wire: I make sure the boot fits securely on the spark plug.
- Test the Blower: Finally, I start the engine to confirm it runs smoothly.
When to Replace Your Stihl BG86 Spark Plug
From my experience, I replace the spark plug at least once a season or every 100 hours of use, whichever comes first. Signs you might need a new plug sooner include difficulty starting, rough running, or black, oily deposits on the old plug.
Tips From My Experience
- Always buy one or two spark plugs as spares to have on hand.
- Keep a maintenance log to track when you last replaced the plug.
- If you’re unsure about the part number, check your blower’s manual or Stihl’s official website.
- Handle the spark plug carefully; the ceramic insulator can crack easily.
Replacing the spark plug on my Stihl BG86 blower has saved me time and money, and it’s a simple task once you know what to look for. I hope my buying guide helps you keep your blower running like new!
Author Profile
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Michael Shirley is the voice behind sleevetext.com. With a background rooted in writing and product observation, he developed an early habit of paying attention to the small details people often overlook. Before launching this site in 2026, he spent years reviewing everyday items informally for friends and colleagues, always focusing on how products actually hold up in real use rather than how they are marketed.
Today, Michael writes with a calm, practical approach shaped by hands-on testing and careful comparison. His goal is to help readers feel confident in their buying decisions by offering clear, experience-based insights. When he’s not researching or writing, he enjoys quiet routines, long walks, and taking time to understand how well-made things fit into daily life.
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