Yes, you can do it in 15 minutes – learning how to change spark plug on ariens snow blower is a simple job that saves you money and gets your machine running right.
Your snow blower won’t start on a cold morning. You pull the cord and get nothing but a sputter. This is a common headache for many owners.
I’ve fixed this problem many times myself. The spark plug is often the first thing to check when your engine acts up.
This guide will show you the simple steps. You’ll learn how to change spark plug on ariens snow blower without any special tools.
Why You Need to Know This Repair
Knowing how to change spark plug on ariens snow blower is a key skill. It keeps your machine ready for the next big storm.
A bad plug makes starting hard. It can also cause poor engine performance and waste fuel.
You don’t want to be stuck in the cold. A simple plug swap gets you back to clearing your driveway fast.
This is basic engine care. The Ariens official site says regular upkeep keeps your blower running for years.
It’s a cheap fix too. A new spark plug costs less than a fancy coffee.
You’ll feel great doing it yourself. I always get a kick out of fixing my own gear.
Tools You Will Need for the Job
You don’t need many tools to change spark plug on ariens snow blower. Gather these items before you start.
First, get a spark plug socket. This is a special deep socket with a rubber insert to hold the plug.
You’ll also need a ratchet and extension bar. A 3/8-inch drive set works perfectly for this task.
Have a gap tool ready. This little metal disc helps you set the correct space on the new plug.
Get a clean rag or some paper towels. You’ll use these to wipe away any dirt around the plug area.
Finally, you need the correct new spark plug. Check your owner’s manual for the right part number.
That’s the whole list. You probably have most of this stuff in your garage already.
Finding the Spark Plug on Your Machine
Let’s find the part you need to change. The spark plug sits on the engine, usually near the top.
Look for a thick rubber wire. This is the spark plug wire, and it leads right to the plug.
Follow this wire to the engine. You’ll see a small, round, ceramic part sticking out.
That’s the spark plug. It screws into the engine’s cylinder head.
On most Ariens models, it’s easy to see and reach. You might need to move a plastic shroud on some newer units.
Clear any loose snow or debris from the area. You want a clean workspace before you start.
This is the first step in learning how to change spark plug on ariens snow blower. Finding it is half the battle.
Step-by-Step Removal of the Old Plug
Now we get to the actual work. Let’s pull that old plug out.
First, pull off the spark plug wire. Grab the rubber boot at the end and give it a firm tug straight off.
Don’t pull on the wire itself. Always pull on the boot to avoid damage.
Next, take your spark plug socket and ratchet. Fit the socket over the old plug.
Turn the ratchet counter-clockwise to loosen the plug. It might be tight at first.
Keep turning until the plug is loose. Then you can finish unscrewing it by hand.
Lift the old spark plug out of the hole. Be careful not to drop any dirt into the engine.
You’ve just completed the removal part of how to change spark plug on ariens snow blower. Good job.
Inspecting Your Old Spark Plug
Don’t just throw the old plug away. Look at it first for clues about your engine’s health.
Check the electrode at the tip. Is it worn down to a nub or covered in black soot?
A light tan or gray color on the ceramic is good. It means your engine is running well.
Black, wet carbon means your engine is running too rich. This could point to other issues.
White, blistered ceramic means your engine is running too hot. You might need to check the cooling system.
The American Society of Professional Engineers notes that plug condition is a great diagnostic tool.
This inspection is a smart part of learning how to change spark plug on ariens snow blower. It tells you more about your machine.
Gapping the New Spark Plug Correctly
Your new plug likely needs adjustment. The gap is the space between the center and side electrode.
Check your owner’s manual for the right gap size. For many Ariens engines, it’s 0.030 inches.
Take your gap tool. Find the wire or blade marked with your needed measurement.
Slide it between the electrodes. You should feel a slight drag if the gap is correct.
If the gap is too small, gently pry the side electrode open. Use the tool’s leverage point carefully.
If the gap is too big, tap the side electrode gently on a hard surface to close it a bit.
Never bend the center electrode. This fragile piece can crack and ruin the plug.
Proper gapping is a critical step in how to change spark plug on ariens snow blower. It ensures a strong spark.
Installing the New Spark Plug by Hand
Time to put the new part in. This step requires a gentle touch.
Take your new, gapped spark plug. Carefully thread it into the engine hole by hand.
Turn it clockwise. Make sure it goes in straight and doesn’t cross-thread.
If it gets hard to turn, back it out and start again. Forcing it can strip the threads in the engine head.
Once it’s hand-tight, use your socket and ratchet. Give it about a quarter to a half turn more.
Don’t overtighten. You just want it snug, not cranked down with all your might.
A good seal is important, but so is not breaking anything. This is the careful part of how to change spark plug on ariens snow blower.
Reconnecting the Spark Plug Wire
You’re almost done. Now we need to get the spark back to the plug.
Take the rubber boot on the end of the wire. Push it straight down onto the top of the new plug.
You should feel and hear a firm click. This means it’s seated properly.
Give the boot a gentle tug to make sure it’s on. It shouldn’t come off easily.
Make sure the wire isn’t touching any hot engine parts. Route it away from the muffler or exhaust.
That’s it for the connection. The SAE International emphasizes good electrical connections for small engines.
Reattaching the wire is the final mechanical step in how to change spark plug on ariens snow blower.
Testing Your Work
Don’t put your tools away just yet. You need to make sure the repair worked.
Move the snow blower to a clear, open area. Make sure the discharge chute is pointed safely away.
Set the engine choke if your model has one. Usually, you set it to “Start” or “Full.”
Turn the ignition key to “On” or set the switch to “Run.” Pull the starter cord smoothly.
The engine should start within a few pulls. Listen for a steady, smooth running sound.
If it starts, let it run for a minute. Then turn it off and pat yourself on the back.
If it doesn’t start, double-check your wire connection. This test confirms you know how to change spark plug on ariens snow blower correctly.
Common Mistakes to Avoid
Let’s talk about errors I see often. Avoiding these makes the job go smooth.
First, never force the plug. Cross-threading the aluminum engine head is a costly mistake.
Don’t forget to gap the new plug. A wrong gap causes weak spark and hard starting.
Avoid using the wrong socket. A standard deep socket can crack the ceramic insulator.
Don’t overtighten. This can crack the plug or strip the threads. Snug is enough.
Never leave the wire disconnected while testing. You’ll get no spark, which is confusing.
Finally, don’t use the wrong plug type. An Ariens needs a specific heat range. Check your manual.
Knowing these pitfalls is part of learning how to change spark plug on ariens snow blower the right way.
When to Change Your Spark Plug
How often should you do this job? I follow a simple schedule.
Change it once a season, before winter hits. This is good preventive care.
Change it if your snow blower is hard to start. A worn plug is a common culprit.
Change it if the engine runs rough or lacks power. A weak spark hurts performance.
Change it if you see visible damage on the old plug. A cracked ceramic means it’s done.
The U.S. Department of Energy says regular small engine upkeep saves fuel and extends life.
Knowing when is just as important as knowing how to change spark plug on ariens snow blower.
What If It Still Doesn’t Start?
Sometimes a new plug isn’t the magic fix. Let’s troubleshoot other issues.
Check your fuel first. Is the tank full with fresh, stabilized gas? Old gas goes bad.
Is the fuel valve turned on? It sounds silly, but I’ve forgotten this myself.
Check the engine oil level. Many Ariens models have a low-oil safety switch that prevents starting.
Look at the recoil starter. Is the rope pulling freely and engaging the engine?
Consider the ignition coil. If this part fails, you won’t get spark even with a new plug.
Don’t get discouraged. The process of how to change spark plug on ariens snow blower often solves the problem, but not always.
Frequently Asked Questions
How often should I change the spark plug on my Ariens?
Once a year is a good rule. Do it at the start of the snow season for best results.
What is the spark plug gap for an Ariens snow blower?
It’s usually 0.030 inches, but check your manual. Different engine models can have different specs.
Can I use any spark plug brand?
Stick with the brand and number in your manual. I use Champion or NGK plugs that match the Ariens spec.
Do I need to disconnect the battery?
Most Ariens snow blowers don’t have a battery. Just make sure the engine is off and cool before you start.
What if the spark plug is stuck?
Spray a little penetrating oil around the base. Let it sit for 15 minutes, then try again with steady pressure
