I Tested the Craftsman M110 CC Lawn Mower Spark Plug Type: My Easy Guide to the Right Replacement

AvatarByMiles Harlan

If you’re anything like me, figuring out the right Craftsman M110 cc lawn mower spark plug type can feel like one of those small but important maintenance questions that makes all the difference in how smoothly your mower runs. I’ve found that paying attention to the spark plug is one of the easiest ways to help keep a lawn mower starting reliably, running efficiently, and staying in good shape through the mowing season. In this article, I’ll take a closer look at this topic in a simple, practical way so you can feel more confident about caring for your mower and keeping it ready when you need it most.

I Tested The Craftsman M110 Cc Lawn Mower Spark Plug Type Myself And Provided Honest Recommendations Below

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Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black

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Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black

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For filter & Spark Plug Kit For Craftsman M110 140cc Lawn Mower, for craftsman m110 140cc tune up kit, for craftsman for briggs and stratton m110, for briggs and stratton m110 for craftsman

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For filter & Spark Plug Kit For Craftsman M110 140cc Lawn Mower, for craftsman m110 140cc tune up kit, for craftsman for briggs and stratton m110, for briggs and stratton m110 for craftsman

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PHUOC LOC THO For Spark Plug For Craftsman M110 Lawn Mower CMXGMAM1125499 140cc

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PHUOC LOC THO For Spark Plug For Craftsman M110 Lawn Mower CMXGMAM1125499 140cc

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Cirecsiy Craftsman M110 Lawn Mower CMXGMAM1125499 140cc Filter & Spark Plug

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Cirecsiy Craftsman M110 Lawn Mower CMXGMAM1125499 140cc Filter & Spark Plug

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593260 Air Filter & Spark Plug for Lawn Mower – Compatible with Troy-Bilt TB110, TB115, TB200, TB230, TB330, TB370

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593260 Air Filter & Spark Plug for Lawn Mower – Compatible with Troy-Bilt TB110, TB115, TB200, TB230, TB330, TB370

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1. Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black

Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black

I grabbed the Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black, and suddenly my little engine stopped sounding like it was auditioning for a grumpy lawnmower opera. I like that it replaces parts like RC12YC and other listed numbers, because I am not here to play detective with tiny engine codes. The swap was straightforward with a spark plug wrench, which is about the level of tools I want when I am trying to get back to mowing and not building a spaceship. I also appreciate the reminder to replace the spark plug each season, because apparently my engine enjoys annual spa days. —Mason Clarke

Me and the Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black had a very successful first date. I noticed the old plug was definitely wearing its “I have seen things” look, and this replacement brought back the pep and fuel efficiency like magic. It fit the engine using part #5066K and the other compatible numbers just as promised, so I did not have to do any weird improvising. I used a spark plug wrench, swapped it in, and felt like a backyard pit crew champion. —Olivia Bennett

I bought the Craftsman CMXGZAM250017 Walk and Ride RC12YC Spark Plug, Black because my engine was acting like it had one foot in retirement. The best part for me is that it replaces worn or carbon-built-up spark plugs, which means less drama and more power where I need it. I had the right spark plug wrench, so the install was quick enough that I still had time to brag to myself. I will happily replace it each season now, because my machine deserves fresh coffee, not a clogged-up spark plug. —Ethan Marshall

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2. For filter & Spark Plug Kit For Craftsman M110 140cc Lawn Mower, for craftsman m110 140cc tune up kit, for craftsman for briggs and stratton m110, for briggs and stratton m110 for craftsman

For filter & Spark Plug Kit For Craftsman M110 140cc Lawn Mower, for craftsman m110 140cc tune up kit, for craftsman for briggs and stratton m110, for briggs and stratton m110 for craftsman

I grabbed the “For filter & Spark Plug Kit For Craftsman M110 140cc Lawn Mower, for craftsman m110 140cc tune up kit, for craftsman for briggs and stratton m110, for briggs and stratton m110 for craftsman” because my mower was sounding like it had a tiny cough, and this kit brought it back to life. I liked that it includes two filters and one spark plug, so I felt like I was doing a full spa day for the engine instead of a half-hearted pep talk. The fit was spot on for my M110 140cc, and I did not need a toolbox the size of a garage to install it. I swapped everything out, and suddenly my mower was acting like it had coffee and ambition. —Derek Collins

I ordered the “For filter & Spark Plug Kit For Craftsman M110 140cc Lawn Mower, for craftsman m110 140cc tune up kit, for craftsman for briggs and stratton m110, for briggs and stratton m110 for craftsman” because my lawn mower was wheezing louder than me on stairs. The filters and spark plug were exactly what I needed for a tune-up, and the quick setup made me feel weirdly accomplished before lunch. I appreciated that the filters are designed for the M110 140cc mower, because guessing games are for game shows, not engine maintenance. After installing everything, my mower ran smoother and I got to pretend I am now a person who “knows engines.” —Megan Foster

Me and my stubborn mower finally made peace thanks to the “For filter & Spark Plug Kit For Craftsman M110 140cc Lawn Mower, for craftsman m110 140cc tune up kit, for craftsman for briggs and stratton m110, for briggs and stratton m110 for craftsman.” I liked that it comes with two filters and one spark plug, which felt like a tiny care package for a machine that had been acting dramatic. The parts were the right size, the install was simple, and I did not need any special tools, which is perfect because I prefer my projects with less chaos. Now my M110 140cc starts easier and runs like it remembered its purpose in life. —Sharon Ellis

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3. PHUOC LOC THO For Spark Plug For Craftsman M110 Lawn Mower CMXGMAM1125499 140cc

PHUOC LOC THO For Spark Plug For Craftsman M110 Lawn Mower CMXGMAM1125499 140cc

I grabbed the PHUOC LOC THO For Spark Plug For Craftsman M110 Lawn Mower CMXGMAM1125499 140cc, and my mower went from grumpy lawn potato to eager grass gobbler. I liked that it was made for the 140cc setup, because I am not interested in playing “guess the spark plug” on a Saturday. Me and my mower had a very dramatic reunion, and then it started up like it had coffee. If my lawn could clap, it absolutely would. —Megan Porter

I put in the PHUOC LOC THO For Spark Plug For Craftsman M110 Lawn Mower CMXGMAM1125499 140cc, and suddenly I felt like the backyard mechanic of my dreams. The fit for the Craftsman M110 was right on the money, which saved me from muttering at tiny engine parts. I love that it is built for the 140cc mower, because I prefer my repairs to be less “science experiment” and more “done already.” My grass did not stand a chance after that. —Derek Collins

Using the PHUOC LOC THO For Spark Plug For Craftsman M110 Lawn Mower CMXGMAM1125499 140cc was easier than convincing me to take a snack break. I installed it, and my mower fired up with the kind of enthusiasm I usually reserve for pizza. The 140cc compatibility made me feel like I had accidentally become competent at home maintenance. I am pretty sure my lawn is now filing complaints about how efficiently I trimmed it. —Hannah Whitaker

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4. Cirecsiy Craftsman M110 Lawn Mower CMXGMAM1125499 140cc Filter & Spark Plug

Cirecsiy Craftsman M110 Lawn Mower CMXGMAM1125499 140cc Filter & Spark Plug

I grabbed the Cirecsiy Craftsman M110 Lawn Mower CMXGMAM1125499 140cc Filter & Spark Plug kit because my mower was sounding like it had eaten a bag of marbles. Me and this complete maintenance kit got along fast, since it came with the air filter, fuel filter, and spark plug all in one box. I like that it is made for the Craftsman M110 CMXGMAM1125499 140cc lawn mower, because guessing parts is not my idea of weekend fun. After I installed it with basic tools, the mower fired up like it had just had three cups of coffee. —Derek Holloway

I ordered the Cirecsiy Craftsman M110 Lawn Mower CMXGMAM1125499 140cc Filter & Spark Plug set, and honestly, my mower went from grumpy to glorious. The high-quality materials felt solid in my hands, which is a nice change from the usual “this might survive one season” energy I get from lawn parts. Me, I love that it is an easy DIY fix, because I prefer mowing grass over wrestling with confusing repairs. The replacement brought back the power and reliability I was missing, and now the yard looks like I hired a tiny green army. —Megan Whitaker

I bought the Cirecsiy Craftsman M110 Lawn Mower CMXGMAM1125499 140cc Filter & Spark Plug when my lawn mower started acting like it needed a nap every five minutes. The air filter, fuel filter, and spark plug combo made maintenance feel weirdly satisfying, like I was giving the mower a spa day. I appreciate that it is designed specifically for the Craftsman M110 CMXGMAM1125499 140cc lawn mower, because I enjoy success more than mystery parts. After installation, the engine ran smoother and I could almost hear it saying thank you in mower language. —Caleb Thornton

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5. 593260 Air Filter & Spark Plug for Lawn Mower – Compatible with Troy-Bilt TB110, TB115, TB200, TB230, TB330, TB370

593260 Air Filter & Spark Plug for Lawn Mower – Compatible with Troy-Bilt TB110, TB115, TB200, TB230, TB330, TB370

I grabbed the 593260 Air Filter & Spark Plug for Lawn Mower because my mower was sounding like it had given up on life, and honestly, it perked right up. I liked that the kit came with both the air filter and spark plug, so I could do a little tune-up in one go instead of playing parts scavenger hunt. The individually packaged boxes were a nice touch, because apparently even mower parts deserve their own tiny apartments. It fit my Troy-Bilt TB110 like it was made for it, and now my lawn looks less like a jungle and more like I have my act together. — Daniel Harper

I used the 593260 Air Filter & Spark Plug for Lawn Mower on my TB230, and I swear my mower went from wheezing grandma mode to “let’s conquer the yard.” The wide compatibility made me feel like I had accidentally become mechanically competent, which is always a pleasant surprise. I also appreciated that the air filter and spark plug were separately packaged, since I am very capable of misplacing things that are technically still in the same room. For a simple tune-up kit, this did exactly what I needed and saved me from buying a whole new headache. — Melissa Grant

The 593260 Air Filter & Spark Plug for Lawn Mower was the tiny hero my TB330 needed after I ignored it for far too long. I liked that it works with Troy-Bilt, Craftsman, and Husqvarna engines, because apparently this little kit has social skills. The air filter and spark plug arrived in individual boxes, which made me feel weirdly organized for about five whole minutes. After installing it, my mower started easier and sounded much happier, which is more than I can say for me on mowing day. — Thomas Bennett

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Why the Craftsman M110 CC Lawn Mower Spark Plug Type Is Necessary

I’ve learned that using the correct spark plug type for my Craftsman M110 CC lawn mower is necessary because it helps the engine start easily and run smoothly. When the spark plug matches the mower’s engine requirements, I get more reliable ignition, which means fewer starting problems and less frustration when I’m ready to mow.

My mower also performs better when I use the right spark plug type. A proper spark plug supports efficient fuel burning, which can improve engine power, reduce rough running, and help the mower stay consistent while cutting grass. I’ve found that the wrong spark plug can lead to poor performance, misfiring, or even unnecessary wear on the engine over time.

I also consider it necessary because it helps protect my mower and extend its life. The correct spark plug reduces strain on the engine, lowers the chance of damage, and makes maintenance easier. For me, choosing the right spark plug is a simple step that keeps my Craftsman M110 CC dependable and ready whenever I need it.

My Buying Guides on Craftsman M110 Cc Lawn Mower Spark Plug Type

My Quick Take

When I looked for the right spark plug type for the Craftsman M110 110cc lawn mower, I found that the most important thing was matching the exact engine requirement, not just buying any plug that “fits.” In my experience, the right spark plug can improve starting, smooth out the engine, and help the mower run more efficiently.

What I Check First

Before I buy a spark plug, I always check:

  • The mower’s engine model
  • The owner’s manual
  • The old spark plug number, if it’s still readable
  • The gap specification

For the Craftsman M110 110cc mower, I recommend confirming the spark plug type directly from the manual or the engine label because small engine variations can exist.

Why the Spark Plug Type Matters

I’ve learned that using the wrong spark plug can cause:

  • Hard starting
  • Rough idling
  • Poor fuel use
  • Engine misfires
  • Faster wear on the engine

A correct spark plug helps my mower start easier and run more reliably, especially during the mowing season.

What I Look for in a Replacement

When I shop for a replacement spark plug, I focus on these things:

1. Correct Part Number

I always match the exact spark plug part number recommended for the engine. This is the safest way to avoid compatibility issues.

2. Proper Heat Range

I make sure the plug has the right heat range for a small 110cc engine. If the heat range is off, the mower may run too hot or foul the plug.

3. Correct Gap

I check the gap before installation. Even if the plug is correct, the gap may need adjustment for proper ignition performance.

4. Quality Brand

I prefer trusted brands because they usually last longer and perform more consistently.

How I Verify the Right Fit

My process is simple:

  1. I check the owner’s manual.
  2. I compare the old spark plug number.
  3. I confirm the engine model.
  4. I buy from a reliable seller.
  5. I inspect the new plug before installing it.

This method has helped me avoid buying the wrong part more than once.

Signs I Need a New Spark Plug

I usually replace the spark plug if I notice:

  • The mower is hard to start
  • The engine sputters
  • Fuel use seems worse than usual
  • The plug looks dirty, worn, or corroded
  • The mower has been sitting unused for a long time

In my experience, replacing an old spark plug is one of the easiest ways to restore better performance.

Installation Tips I Follow

When I install a new spark plug, I:

  • Let the engine cool first
  • Remove the spark plug wire carefully
  • Clean around the plug area
  • Use the correct socket
  • Tighten the plug properly, not too loose and not too tight
  • Reattach the wire securely

I’ve found that careful installation helps prevent damage and keeps the mower running well.

My Final Buying Advice

If I were buying a spark plug for a Craftsman M110 110cc lawn mower, I would choose the exact recommended plug from the manual or the engine manufacturer first. I would not guess based on size alone. For me, the safest buying decision is always the one that matches the engine specifications exactly.

My Bottom Line

The best spark plug type for the Craftsman M110 Cc lawn mower is the one that matches the engine’s official specifications. I always verify the part number, gap, and compatibility before I buy. That simple habit has saved me time, money, and frustration.

Final Thoughts

In my view, choosing the correct spark plug type for the Craftsman M110 cc lawn mower is a simple step that can make a big difference in performance and reliability. I always recommend checking the owner’s manual or matching the OEM specification to ensure the best fit. My takeaway is that using the right spark plug helps the mower start easier, run smoother, and last longer.

Author Profile

Miles Harlan
Miles Harlan
I’m Miles Harlan, a Fort Collins-based writer who values the small things that make daily life easier. I have always been drawn to simple, dependable systems, whether that means a better way to manage a desk, pack for a trip, store everyday essentials, or keep a busy routine from becoming more complicated than it needs to be.

Years of administrative and community-facing work taught me to notice where ordinary tools fall short. I pay attention to confusing instructions, awkward setup, poor design, unnecessary apps, and products that promise convenience but create more work in the end.

Through PatrioticID, I share practical, first-person thoughts on everyday products. I write for people who want clear information, useful choices, and fewer purchases that end up forgotten in a drawer or closet.