Yes, you can do it yourself in about 15 minutes – learning how to change spark plug on Troy Bilt snow blower is a simple job that saves you money and gets your machine running right.
I’ve changed dozens of these plugs over the years. It’s one of the first things I check when my snow blower won’t start.
You don’t need to be a mechanic. With a few basic tools and the right part, you’ll have it done fast.
This guide walks you through each step. I’ll show you the common mistakes to avoid, too.
Why You Need to Know How to Change Spark Plug
Your snow blower’s spark plug is a small part with a big job. It makes the spark that starts the engine.
Over time, the plug gets dirty or the gap wears out. This causes hard starting or rough running.
Knowing how to change spark plug on Troy Bilt snow blower means you fix this fast. You won’t be stuck in the cold.
It’s cheap maintenance. A new plug costs less than ten bucks at most stores.
Changing it once a season keeps your machine reliable. I do mine every fall before the first snow.
It’s a skill you’ll use for years. Once you learn, you can do it on any small engine.
Tools You Need for the Job
You only need a few tools. I bet you have most of them already.
First, get a spark plug socket. This is a deep socket with a rubber insert inside.
The insert holds the plug so it doesn’t fall. A regular socket won’t work as well.
You’ll need a ratchet or a wrench to turn the socket. A 3/8-inch drive ratchet is perfect.
Grab a gap tool or feeler gauge. This checks the space on the new plug’s electrode.
Have a wire brush handy. It cleans the area around the plug before you remove it.
That’s really it. You don’t need fancy gear to learn how to change spark plug on Troy Bilt snow blower.
Finding the Right Spark Plug
Using the correct plug matters a lot. The wrong one can hurt your engine.
Check your owner’s manual first. It lists the exact plug type for your model.
Don’t have the manual? Look on the engine itself. There’s often a sticker with model numbers.
You can also check the old plug. The part number is stamped on the ceramic part.
Common Troy Bilt plugs include Champion RC12YC or NGK BPR5ES. But always verify for your machine.
Take the old plug to the store with you. This makes matching it up easy.
Buy a quality brand. I stick with Champion or NGK for my small engines.
Step-by-Step: How to Change Spark Plug on Troy Bilt Snow Blower
Let’s get to the actual work. Follow these steps in order.
First, make sure the engine is off and completely cool. You don’t want to burn your hand.
Disconnect the spark plug wire. Pull on the rubber boot, not the wire itself.
Use your wire brush to clean any dirt around the plug. You don’t want grit falling into the engine.
Fit your spark plug socket onto the plug. Turn it counter-clockwise to loosen.
The plug should come out easily. If it’s stuck, don’t force it. You might need penetrating oil.
Once it’s out, look at the old plug. Its condition tells you about your engine’s health.
Inspecting the Old Spark Plug
Don’t just throw the old plug away. Look at it first.
A normal plug has a light tan or gray color on the tip. That means your engine is running well.
Black, sooty deposits mean the engine is running rich. Too much fuel is getting in.
White or blistered tips can mean the engine is running too hot. This might need more checking.
Oily deposits point to oil getting into the combustion chamber. This could mean worn engine parts.
Check the electrode gap even if you’re replacing it. Compare it to the new plug’s gap.
This inspection is a key part of learning how to change spark plug on Troy Bilt snow blower. It gives you clues.
Gapping the New Spark Plug
Most new plugs come pre-gapped. But you should always check it yourself.
The gap is the space between the center and side electrode. It needs to be just right.
Find the correct gap in your manual. For many Troy Bilt engines, it’s 0.030 inches.
Take your gap tool. Slide the correct thickness blade between the electrodes.
You should feel a slight drag. If it’s too loose or too tight, you need to adjust.
To adjust, gently bend the side electrode. Use the tool’s bending notch, not your fingers.
Check the gap again. Do this until it’s perfect. A good gap ensures a strong spark.
Installing the New Spark Plug
Now put the new plug in. Do this by hand at first.
Thread it into the hole clockwise. Be very careful not to cross-thread it.
If it doesn’t turn in smoothly, back it out and start again. Cross-threading strips the head.
Once it’s hand-tight, use your socket and ratchet. Give it another quarter to half turn.
Don’t over-tighten it. You can crack the ceramic insulator or damage the threads.
It should be snug, not super tight. Think firm handshake, not bone-crusher grip.
Reattach the spark plug wire. Push the boot on until you feel it click into place.
Common Mistakes to Avoid
I see people make the same errors. Let’s avoid them.
Never force a plug that’s stuck. Soak it with penetrating oil and try again later.
Don’t forget to disconnect the wire first. You could get a nasty shock if the engine kicks.
Avoid using the wrong socket. A regular socket can break the ceramic insulator.
Don’t skip checking the gap. Even “pre-gapped” plugs can be off from the factory.
Never over-tighten. This is the biggest mistake when learning how to change spark plug on Troy Bilt snow blower.
Avoid getting dirt in the cylinder. Clean the area well before you remove the old plug.
When to Change Your Spark Plug
How often should you do this? I follow a simple rule.
Change it once per season. Do it in the fall before you need the machine.
Also change it if you have starting problems. A bad plug is a common cause of no-starts.
If the engine runs rough or lacks power, check the plug. It’s a quick and easy fix to try.
After about 25 hours of use, think about a new plug. That’s a general small engine guideline.
Keep a spare plug in your garage. They’re cheap and good to have on hand.
Knowing how to change spark plug on Troy Bilt snow blower means you’re always ready.
What If It Still Doesn’t Start?
You changed the plug, but the engine won’t crank. Now what?
Check the fuel first. Old gas is a huge problem. Use fresh fuel with stabilizer.
Look at the fuel line and filter. A clog here stops gas from reaching the engine.
Make sure the choke is set right. On a cold start, it should be in the closed position.
Check the ignition switch and safety keys. These must be in the “on” or “run” position.
Inspect the spark plug wire for cracks. A damaged wire won’t deliver the spark.
If you’ve checked all this, you might need a pro. But the plug fix solves most issues.
Safety Tips and Precautions
Always put safety first. A few simple steps keep you safe.
Work in a well-lit area. You need to see what you’re doing.
Let the engine cool completely. The exhaust and engine head get very hot.
Disconnect the spark plug wire before you touch the plug. This is the golden rule.
Wear safety glasses. Little bits of dirt or metal can fly into your eyes.
Don’t smoke or have open flames nearby. Gas fumes can linger around the engine.
Keep your work area clean. Tripping over tools is no fun.
Maintenance Beyond the Spark Plug
A spark plug change is just one part of upkeep. Do these other tasks, too.
Change the engine oil once a season. Old oil doesn’t lubricate well.
Use fuel stabilizer in your gas. This prevents gum and varnish in the carburetor.
Check the auger and drive belts for wear. Replace them if they look cracked.
Lubricate the chute control and auger shaft. This keeps things moving smoothly.
Store your snow blower properly in the off-season. Run it dry of fuel or use stabilizer.
Learning how to change spark plug on Troy Bilt snow blower is a great start. Combine it with these other tips for a machine that lasts.
Frequently Asked Questions
How often should I change the spark plug on my Troy Bilt snow blower?
Change it once per season for best results. I do mine every fall before the first snow. If you use it a lot, think about changing it after 25 hours of run time.
What size socket do I need to change the spark plug?
Most Troy Bilt snow blower spark plugs need a 5/8-inch spark plug socket. This is the standard size for small engines. Always use a socket with a rubber insert to protect the plug.
Can a bad spark plug stop my snow blower from starting?
Yes, a bad plug is a very common reason for no-start issues. If the electrode is worn or fouled, it won’t create a good spark. Learning how to change spark plug on Troy Bilt snow blower is the first fix to try.
What is the correct gap for my Troy Bilt spark plug?
Check your owner’s manual for the exact number. For many models, the gap is 0.030 inches. Always verify with a feeler gauge, even if the box says the plug is pre-gapped.
Do I need any special tools to change the plug?
You just need a spark plug socket and a ratchet. A gap tool is also helpful for setting the electrode distance. A wire brush cleans the area before you start. That’s about it.
Is it hard to learn how to change spark plug on Troy Bilt snow blower?
Not at all. It’s one of the easiest repairs you can do. If you can use a wrench, you can change a spark plug. The whole job takes about 15 minutes once you know the steps.
Conclusion
So, now you know how to change spark plug on Troy Bilt snow blower. It’s a simple skill that pays off big time.
You’ll save money on service calls. You’ll get your machine running faster after summer storage.
Grab a socket and a new plug. Give it a try this weekend. You’ll feel great doing it yourself.
Remember to check the gap and don’t over
