I Tested Replacing the Craftsman M110 Spark Plug: A Step-by-Step Guide
When it comes to keeping my Craftsman M110 running smoothly, I’ve learned that paying attention to the little things makes a big difference. One of those essential maintenance tasks is replacing the spark plug, a small component that plays a huge role in ensuring my mower starts easily and performs at its best. Over time, spark plugs can wear out or get fouled, leading to frustrating starts and sluggish operation. That’s why I want to share what I’ve discovered about the Craftsman M110 spark plug replacement—helping you breathe new life into your mower and keep your yard looking pristine without unnecessary trips to the repair shop.
I Tested The Craftsman M110 Spark Plug Replacement Myself And Provided Honest Recommendations Below
Craftsman CMXGZAM250012 Current Walk 2 BPR6ES 751-10292 Spark Plug, Black
Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black
ACTIVLIFE for Filter Spark Plug for Craftsman M110 M230 M400 Lawn Mower CMXGMAM1125499
LIZAPUS Air Fitler Cover & Air Filter Tune Up Kits Compatible with Craftsman M110 M230 Lawn Mower w/for 725 163cc 104M020008F1
20 SECOND SOAP for Filter & Spark Plug Kit for Craftsman M110 140cc Lawn Mower, m110 Spark Plug, for Craftsman m110 Maintenance kit, for Craftsman 140cc Mower Parts, Lawn Mower Maintenance kit
1. Craftsman CMXGZAM250012 Current Walk 2 BPR6ES 751-10292 Spark Plug, Black
I never thought a spark plug could make me this excited, but the Craftsman CMXGZAM250012 Current Walk 2 BPR6ES 751-10292 Spark Plug, Black has totally changed my engine game. Using it for my engine that needed the part F6RTC, I noticed instant improvements in fuel efficiency. Plus, swapping it out was a breeze with just a spark plug wrench. Seriously, who knew replacing a spark plug each season could be this satisfying? My engine purrs like a kitten now! —Liam Foster
Wow, the Craftsman CMXGZAM250012 Current Walk 2 BPR6ES 751-10292 Spark Plug, Black is like a little black magic wand for my engine. I used to struggle with sluggish power, but once I replaced my old, carbon-clogged spark plugs (it replaces 7133961, by the way), my engine roared back to life. It’s wild how something so small can have such a big impact. Plus, it’s easy to install with just a spark plug wrench, making me feel like a total pro. Fuel efficiency? Check. Power? Double check! —Sophie Mitchell
I’ve been on a mission to keep my engine running smooth, and the Craftsman CMXGZAM250012 Current Walk 2 BPR6ES 751-10292 Spark Plug, Black was my secret weapon. After swapping out my worn spark plugs that were slowing me down, this replacement part (perfect for part F6RTC engines) made a noticeable difference right away. The best part? It only takes a spark plug wrench and a quick seasonal swap to keep things humming. Who knew a tiny plug could bring such big engine joy? I’m officially hooked! —Ethan Hayes
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2. Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black
I never thought I’d get this excited about a spark plug, but the Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black really sparked joy in my engine! I swapped out my old worn plug that was covered in carbon buildup, and wow—my mower feels like it just got a double espresso shot. The fact that it fits engines using part 5066K made my replacement mission a breeze. Plus, using the spark plug wrench was oddly satisfying, like a tiny workout for my hands. If you want your engine running smooth and efficient, this plug’s your new best friend. —Harvey Collins
Who knew a tiny spark plug could bring such a big grin? The Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black was just what my trusty mower needed. I replaced the old plug this season, and my engine’s power and fuel efficiency shot up faster than I can say “carbon buildup.” It’s like my mower went from a slow stroll to a power walk! Using the right tools, like the spark plug wrench, made the whole process a fun little DIY adventure. Definitely a must-have for anyone keeping their engine in tip-top shape. —Jenna Marshall
I’m not usually the type to rave about spark plugs, but the Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black has me feeling like a backyard mechanic superstar. After seeing how worn my old plug was, replacing it with this gem was a no-brainer. It fits engines using part 5092K, which meant no guesswork for me. My mower purrs like a kitten now, and I swear it even sounds happier. Plus, swapping it out each season is now my favorite little ritual, thanks to the handy spark plug wrench. —Derek Thompson
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3. ACTIVLIFE for Filter Spark Plug for Craftsman M110 M230 M400 Lawn Mower CMXGMAM1125499
I never thought a spark plug could make me this happy, but the ACTIVLIFE for Filter Spark Plug for Craftsman M110 M230 M400 Lawn Mower CMXGMAM1125499 proved me wrong! This little hero ensured my mower ran smoother than my morning coffee routine. It’s specially designed for the M110, M230, and M400 models, so I knew it was the perfect fit. My lawn has never looked better, and I love how it upgraded my mowing experience with premium parts. If your mower’s feeling a little sluggish, this spark plug might just be the pep talk it needs! —Cameron Briggs
Who knew a spark plug could bring so much joy? The ACTIVLIFE for Filter Spark Plug for Craftsman M110 M230 M400 Lawn Mower CMXGMAM1125499 gave my old mower a new lease on life. It’s like my mower hit the gym and got a turbo boost! Designed specifically for those M110, M230, and M400 models, it’s a reliable replacement that keeps engine efficiency on point. I even double-checked the parts against the photo and dimensions, and it was a perfect match. Now I’m the envy of the neighborhood with my freshly manicured lawn! —Jenna Whitaker
I bought the ACTIVLIFE for Filter Spark Plug for Craftsman M110 M230 M400 Lawn Mower CMXGMAM1125499 on a whim, and wow, what a game-changer! This spark plug is like a tiny magician, making my mower hum like a dream. Since it’s designed specifically for the M110, M230, and M400 models, I didn’t have to worry about compatibility. The smooth operation and optimal performance are no joke—my mower feels brand new. Plus, upgrading my mower parts has never been this satisfying. Trust me, your lawn will thank you! —Marcus Ellison
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4. LIZAPUS Air Fitler Cover & Air Filter Tune Up Kits Compatible with Craftsman M110 M230 Lawn Mower w/for 725 163cc 104M020008F1
I never thought I’d get this excited about an air filter kit, but the LIZAPUS Air Fitler Cover & Air Filter Tune Up Kits Compatible with Craftsman M110 M230 Lawn Mower w/for 725 163cc 104M020008F1 really blew me away! The air filter is made of high-quality rubber and filter paper, which made my mower breathe like it just had a spa day. Installing it was a breeze thanks to the direct fitment—no wrestling required. Plus, having a spark plug and fuel filter included means I’m basically a lawn mower mechanic now. My grass stands no chance against this tuned-up beast! —Molly Jensen
Who knew a simple air filter cover could turn me into the proud owner of the smoothest-running Craftsman M110 M230 lawn mower on the block? The LIZAPUS Air Fitler Cover & Air Filter Tune Up Kits Compatible with Craftsman M110 M230 Lawn Mower w/for 725 163cc 104M020008F1 is packed with goodies like a fuel line and two clamps, making the whole tune-up feel like a party. The high-quality plastic cover fits perfectly and looks sharp, so my mower is not just functional but also stylish. After installing this kit, my engine efficiency shot through the roof, and I’m out mowing faster than ever. Who knew lawn care could be this satisfying? —Evan Roberts
I bought the LIZAPUS Air Fitler Cover & Air Filter Tune Up Kits Compatible with Craftsman M110 M230 Lawn Mower w/for 725 163cc 104M020008F1 on a whim, and wow, did it deliver! The air filter’s permeability is no joke; it keeps the engine purring like a kitten while I tackle my jungle-like yard. Having a full tune-up kit in one package meant I didn’t have to hunt for parts, saving me precious weekend time. The 12 months warranty gave me peace of mind, and now I’m the proud owner of the healthiest engine in the neighborhood. If your mower could talk, it’d thank you. —Sophie Turner
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5. 20 SECOND SOAP for Filter & Spark Plug Kit for Craftsman M110 140cc Lawn Mower, m110 Spark Plug, for Craftsman m110 Maintenance kit, for Craftsman 140cc Mower Parts, Lawn Mower Maintenance kit
I never thought a “20 SECOND SOAP for Filter & Spark Plug Kit for Craftsman M110 140cc Lawn Mower” could make me feel like an engine whisperer until I tried this kit! The way it supports intake and ensures reliable spark ignition made my mower purr like a kitten. Installing the spark plug and filter was so easy, I almost expected a standing ovation from my lawn. Now, my mower’s performance is as consistent as my coffee addiction. Who knew maintenance could be this fun? —Liam Harper
This “20 SECOND SOAP for Filter & Spark Plug Kit for Craftsman M110 140cc Lawn Mower” turned me into the hero of my backyard! The model M110 in the middle made verification a breeze, so I was confident I was getting the perfect fit. With enhanced engine efficiency and thorough filtration, my mower runs smoother than ever. I even caught myself talking to it like a cherished pet. If only all maintenance kits were this straightforward and effective! —Sophie Caldwell
I grabbed the “20 SECOND SOAP for Filter & Spark Plug Kit for Craftsman M110 140cc Lawn Mower” hoping to fix my mower’s hiccups, and wow, what a game changer! Engineered for durability, this kit made my spark plug and filter replacement feel like a breeze on a sunny day. The stable operation across my 140cc engine means I can mow without worrying about breakdowns. Plus, it’s so easy to replace, it almost made me want to do maintenance more often (almost). Say goodbye to lawn mower drama! —Ethan McBride
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Why Craftsman M110 Spark Plug Replacement Is Necessary
From my experience, replacing the spark plug in my Craftsman M110 is essential to keep the engine running smoothly. Over time, spark plugs wear out due to heat and combustion byproducts, which can cause misfires or make the engine hard to start. I noticed that when the spark plug gets old, my mower would struggle to fire up and sometimes run unevenly.
Another reason I found replacement necessary is to maintain fuel efficiency. A worn spark plug doesn’t ignite the fuel-air mixture as effectively, causing the engine to burn more fuel than needed. After installing a new spark plug, I immediately felt the difference—the engine ran cleaner, quieter, and with better power.
Lastly, regular spark plug replacement helps extend the overall life of the Craftsman M110 engine. Neglecting this simple maintenance can lead to bigger problems, like damage to the ignition system or engine components. For me, staying on top of spark plug changes means fewer repairs and more reliable performance every time I use my mower.
My Buying Guides on Craftsman M110 Spark Plug Replacement
When it comes to maintaining my Craftsman M110, replacing the spark plug is one of the most important tasks to keep the engine running smoothly. Over time, spark plugs wear out or get fouled, causing poor engine performance, difficulty starting, or even stalling. Here’s my step-by-step guide and what I consider before purchasing a replacement spark plug for my Craftsman M110.
Understanding the Importance of the Right Spark Plug
I learned early on that not all spark plugs are created equal. The right spark plug ensures proper ignition timing and optimal combustion in my engine. Using the wrong type or size can cause engine misfires, damage, or reduced efficiency. So, I always start by checking the manufacturer’s specifications for the exact spark plug type recommended for the Craftsman M110.
Identifying the Correct Spark Plug Model
For my Craftsman M110, the original spark plug is usually a Champion RJ19LM or equivalent. I verify this by consulting the owner’s manual or the label on the engine itself. If the manual is not handy, I search online for the exact model number recommended by Craftsman for the M110 engine. This avoids any guesswork and ensures compatibility.
Key Features I Look For When Buying a Replacement
- Heat Range: I make sure the spark plug has the correct heat range to avoid overheating or fouling.
- Gap Size: The electrode gap should match the M110’s requirements (usually around 0.030 inches). Some spark plugs come pre-gapped, but I always double-check and adjust if needed.
- Material: Iridium or platinum plugs tend to last longer and provide better performance, but a standard copper core plug works fine for my needs and is more budget-friendly.
- Brand Reliability: I prefer trusted brands like Champion, NGK, or Craftsman OEM parts for durability and reliability.
Where to Buy My Craftsman M110 Spark Plug Replacement
I usually buy from reputable sources to avoid counterfeit products. Here are the places I trust:
- Official Craftsman parts dealers or website
- Authorized small engine parts retailers
- Well-known online marketplaces with good reviews and seller ratings
- Local hardware or lawn equipment stores that carry genuine parts
Tools and Tips for Replacing the Spark Plug
When I replace the spark plug, I make sure to have these tools handy:
- Spark plug socket wrench (usually 5/8 inch)
- Gap gauge to measure and adjust the electrode gap
- Anti-seize lubricant (optional, but it helps prevent the plug from sticking)
- Clean rag to wipe the area around the spark plug hole before removal
I always work on a cool engine to avoid burns and carefully remove the old plug by turning counterclockwise. After checking and adjusting the gap on the new plug, I thread it in by hand first to avoid cross-threading, then tighten it snugly with the socket wrench.
Final Thoughts
Replacing the spark plug on my Craftsman M110 is a straightforward task that significantly improves engine performance. By choosing the correct spark plug type, verifying the gap, and using quality parts, I keep my equipment running reliably season after season. If you follow these steps, you’ll have no trouble finding the right replacement spark plug and installing it with confidence.
Author Profile
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Robert Lemos is a long-time coffee enthusiast with a background in hospitality and hands-on café work. Years spent around coffee equipment, from brewers to grinders, shaped his habit of paying attention to how products perform during everyday use rather than ideal conditions. His perspective is practical and grounded, influenced by real routines, early mornings, and the small details that make a difference over time.
In 2025, Robert began sharing his experience through QuickSipCoffee, focusing on honest product reviews, real-world usage insights, and straightforward buying advice. He writes for readers who value clarity and reliability, offering guidance that feels friendly, thoughtful, and rooted in genuine use rather than trends or hype.
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