Bolens Lawn Mower Spark Plug

Finding the Right Replacement Spark Plug for Your Bolens Mower

Having a properly functioning spark plug is crucial for starting and running your Bolens lawn mower. The spark plug provides the spark that ignites the fuel and air mixture in the engine. Over time, spark plugs become dirty or worn out and need to be replaced. Choosing the correct replacement spark plug for your specific Bolens mower model is important to keep it running smoothly. This detailed buying guide has everything you need to know about selecting the right spark plug for your Bolens lawn mower.

What Spark Plug Does a Bolens Lawn Mower Use?

Bolens lawn mowers are equipped with Champion standard small engine spark plugs. Most Bolens mowers use Champion RC12YC or RJ19LM spark plugs. Some models may also use NGK BPR6ES or Bosch WSR6F spark plugs which are equivalent to the Champion plugs.

Always check your Bolens mower engine manual or specification sticker to verify the exact spark plug your mower requires. This information is usually printed directly on the mower or in the manual that came with it. The spark plug make, model and gap must match the engine specifications to work properly.

How Do I Change the Spark Plug on a Bolens Lawn Mower?

Changing the spark plug on a Bolens mower involves just a few simple steps:

1. Disconnect the spark plug wire and use a spark plug wrench to remove the old plug.
2. Check the spark plug gap with a feeler gauge and set it to the gap specified for your mower engine (usually between 0.028” – 0.030”).
3. Use a wire brush to clean any dirt from the spark plug threads and electrode.
4. Screw the new properly gapped spark plug into the engine by hand until tight.
5. Reconnect the spark plug wire securely.

The entire process takes just a few minutes. Having spare Champion plugs on hand makes replacement quick when needed.

Where Can I Buy a Spark Plug for a Bolens Lawn Mower?

Replacement Bolens mower spark plugs are readily available both online and locally:

• Your local small engine repair shop will carry or can order Champion plugs. This ensures you get the right plug.
• Hardware stores such as Home Depot, Lowe’s or Ace Hardware stock Champion spark plugs. Verify the model for your mower.
• Online retailers like Amazon.com and Walmart.com have Champion small engine spark plugs in stock. Check for the correct plug number.
• Directly from the Champion website you can find and purchase the exact spark plug for your Bolens mower.

For convenience, buy a few plugs at once for future quick replacement. Be sure to compare prices to get the best deal.

What is the Spark Plug Gap for a Bolens Lawn Mower?

The gap or space between the side and center electrodes on a Bolens mower spark plug needs to be set precisely to work properly. Bolens mowers generally require these standard spark plug gap settings:

• 0.030 inches (0.76 mm) – This is the most common gap for most Bolens mowers. Popular plugs like the RC12YC use this gap.
• 0.028 inches (0.71 mm) – Some Bolens engines require this tighter plug gap. Check for the exact spec.
• 0.035 inches (0.89 mm) – A few larger Bolens mower engines use a wider 0.035 inch gap.

Always verify the correct spark plug gap called for in your mower’s engine manual. Set the gap to the proper specification using a feeler gauge and spark plug gap tool prior to installing the plug. An incorrect gap can cause poor engine performance.

How Often Should I Replace the Spark Plug in My Bolens Lawn Mower?

It’s recommended to replace the spark plug on your Bolens mower about once per year or after every 100 hours of run time. This yearly spark plug replacement provides fresh ignition power for easy starting and smooth engine operation.

Replace the plug more frequently if you notice hard starting, rough running or loss of mower power. Examine the old plug when changing it – a very worn or fouled spark plug means it’s a good idea to replace it more often. Keeping a spare plug on hand makes quick replacement easy when needed.

How Do I Troubleshoot Spark Plug Issues in a Bolens Lawn Mower?

Here are some common spark plug problems and troubleshooting steps for Bolens mowers:

• Hard starting – Check that the plug wire is attached tightly. Remove and inspect the plug – replace it if fouled or worn. Confirm the gap is correct.
• Rough idle – Remove the plug and examine it. Replace if dirty or worn. Check the spark plug gap and reset as needed.
• Loss of power – Replace the spark plug if fouled, damaged or worn. Be sure the gap is set properly. Check for plug wire damage.
• Mower won’t start – Check that the spark plug wire is connected solidly. Replace the spark plug if worn. Verify the proper plug gap. Test for spark with a spark tester.

Replacing the spark plug with an exact new Champion plug for your mower engine will solve most ignition problems. Be sure to gap the new plug properly before installing.

What are the Signs of a Bad Spark Plug in a Bolens Lawn Mower?

Watch for these common symptoms that indicate spark plug failure in your Bolens mower:

• Difficult starting or weak ignition – Fouled, worn or damaged plugs reduce sparking power.
• Loss of mower power – An improper plug gap or worn plug reduces combustion efficiency.
• Rough idle – Incorrect gap or worn electrodes can make idle uneven.
• Misfiring – Cracked insulator, excessive gap or fouled plug causes missing ignition.
• Increased fuel consumption – Worn plugs require more fuel for ignition.
• Dark discharge on insulator – The plug may be fouled from poor gas, oil or dirt.

Replacing the spark plug at the first sign of trouble can prevent more serious issues and keep your mower running smoothly.

How Do I Test a Bolens Lawn Mower Spark Plug?

Testing a Bolens mower spark plug is straightforward:

1. Remove the spark plug lead and use your plug wrench to take out the plug.
2. Examine the plug visually. Replace it if the insulator is cracked, the electrodes are worn or you see heavy fouling deposits.
3. Check that the gap is properly set, usually around 0.030 inches. Correct as needed.
4. Attach the plug to the plug lead. Ground the plug threads to the mower engine.
5. Pull the mower recoil cord briskly while observing the spark plug tip. You should see a bright blue spark jump the gap.
6. A weak, yellow or no spark indicates the plug needs to be replaced with a fresh properly gapped Champion plug.

This quick visual and spark test confirms if the plug is still working well or needs replacement.

Can I Use any Spark Plug for a Bolens Lawn Mower?

It is highly recommended to use only the specific Champion spark plug called for in your Bolens mower owner’s manual for proper engine performance and to prevent problems. While some other brand plugs may fit your mower, they may not provide correct sparking or durability.

Stick with Champion small engine spark plugs matched to your particular Bolens mower model. The Champion plugs have proven performance and reliability on Bolens mowers. Using the specified plug prevents misfires, fouling issues and ultimate damage to the mower.

What Tools Are Needed to Replace a Bolens Lawn Mower Spark Plug?

Replacing a Bolens mower spark plug is a simple job requiring just a few basic tools:

• Spark plug wrench or socket – Essential for removing and tightening the plug. A 5/8″ wrench fits most Bolens plugs.
• Feeler gauge – For setting the precise spark plug gap.
• Gap adjustment tool – Allows careful adjustment of the side electrode.
• Anti-seize lubricant – Prevents seizing of the plug in the engine head.
• Dielectric grease – Helps the plug boot seal tightly to the terminal.
• Spark plug tester – Optional tool for confirming plug spark.
• Small wire brush – For cleaning corrosion from the plug.

Having the right plug wrench and gap tool is key for this task. Apply anti-seize lube to the plug threads before installation.

How Do I Remove a Stuck Spark Plug from a Bolens Lawn Mower?

Removing a seized spark plug from your Bolens mower can be challenging. Here are some tips for getting a stuck plug out:

• Spray penetrating oil on the stuck plug and let it soak 15 minutes. This may free up the threads.
• Carefully turn the plug back and forth with your wrench to break it free. Don’t force it or you may break the plug.
• Use a propane torch to heat the engine cylinder head which expands the metal to loosen the seized plug.
• Attach a spark plug thread chaser tool to your wrench for extra grip and leverage on the plug.
• If necessary, use an extractor tool to grip and back the stuck plug out. Be gentle to avoid snapping the plug off.
• A seized plug may indicate worn threads. Be sure to clean out any dirt before installing the new plug.

With patience and proper tools, you can remove even a badly stuck spark plug.

What Causes a Spark Plug to Fail in a Bolens Lawn Mower?

There are a few common reasons for spark plug failure in Bolens mowers:

• Normal wear – The electrodes erode over time reducing sparking ability.
• Improper gap – Incorrect plug gap prevents proper sparking.
• Fouling – Buildup of fuel or oil deposits blocks the spark.
• Corrosion – Rust and oxidation from moisture damages the plug.
• Cracking – Thermal stress and engine vibration can crack the insulator.
• Overheating – Running the engine too hot can melt the plug electrode.

Regular replacement with the specified Champion plug at the correct gap will minimize issues with spark plug failure in your Bolens mower.

How Do I Clean a Bolens Lawn Mower Spark Plug?

Here is the proper process for cleaning a fouled or dirty Bolens mower spark plug:

1. Use a wire brush tool to gently remove any dirt, oil or carbon deposits from the spark plug electrode and insulator tip. Take care not to damage the components.
2. Spray the plug down with brake or carburetor cleaner solvent and let it air dry completely. This removes any oily residue.
3. Check the spark plug gap and reset it to the mower engine spec if necessary.
4. Apply a small amount of anti-seize lubricant to the plug threads before reinstalling.
5. Once cleaned, test the plug for strong sparking before putting it back in the mower. Replace it if spark remains weak.

Regular spark plug replacement is better than cleaning old plugs which have likely suffered internal wear or damage. Always install new Champion plugs at the proper gap for best performance.

Are There any Common Problems with Bolens Lawn Mower Spark Plugs?

The most frequent issues that affect Bolens mower spark plugs include:

• Normal electrode erosion – Gradual wear through normal use diminishes the spark. Replacement brings fresh ignition power.
• Incorrect gap – The wrong gap prevents the plug from firing properly. Setting the gap precisely is critical.
• Fouling – Built up debris on the plug blocks the spark. More frequent replacement avoids fouling issues.
• Corroded terminal – Moisture and oxidation can corrode the terminal nut and boot connection. A little dielectric grease prevents this.
• Loose plugs – Vibration can cause plugs to loosen over time. Proper tightening avoids this.
• Cracked insulator – Damage from over-tightening or wear from heat and vibration can cause the insulator to crack.

Using only the specified Champion plugs properly gapped and replaced at the recommended intervals will minimize any spark plug problems in your Bolens mower.

How Do I Find the Correct Spark Plug for My Bolens Lawn Mower Model?

It’s important to use the exact spark plug your specific Bolens mower requires. Here’s how to determine the proper plug:

• Check the engine manual that came with your mower – the plug type and gap is always listed here.
• Examine the engine itself for a spark plug sticker – this label displays the plug details.
• Look up your mower’s model number on the Bolens website – they provide the required plug for each model.
• Contact Bolens customer support with your model number – their experts can provide the correct plug.
• Take the old plug to your local dealer – they can match it up with the right replacement.

Always verify the manufacturer’s recommended spark plug rather than guessing. This ensures optimal mower performance and avoids potential engine damage.

What is the Lifespan of a Bolens Lawn Mower Spark Plug?

With proper maintenance, the average lifespan of a Bolens mower spark plug is:

• 1 year or 100 hours of use – Normal lifespan with yearly plug replacement.
• 2 years or 150-200 hours – With occasional mower usage each season.
• 6-8 months or 50 hours – For mowers used commercially or extensively.

Factors like engine temperature, vibration levels, quality of fuel and oil, and regular maintenance impact plug lifespan. Stick to the recommended yearly plug replacement to keep your Bolens mower starting and running strong when you need it.

How Do I Know if My Bolens Lawn Mower Spark Plug is Working Properly?

Here are signs your Bolens mower spark plug is functioning correctly:

• Easy, quick starting with 1-2 pulls of the recoil cord.
• Steady, even and smooth engine idle.
• Good throttle and power response when mowing.
• Minimal vibration and good sound from the engine.
• Light brown color on the insulator with no fouling deposits.
• Properly seated with tight plug boot connection.
• Maintained proper gap setting.

Conversely, hard starting, rough running, misfiring, power loss or fouling indicate it’s time to replace the worn or damaged spark plug.

What are the Benefits of Using a High-Quality Spark Plug in a Bolens Lawn Mower?

Installing a good quality Champion spark plug matched to your Bolens mower offers these benefits:

• Easy starting – Quality plugs fire right up with a crisp blue spark.
• Optimized engine performance – Proper spark timing and voltage drives the engine efficiently.
• Improved fuel efficiency – Complete fuel ignition means maximum mowing time per tank.
• Reduced emissions – Lower hydrocarbon emissions are better for the environment.
• Enhanced power – High voltage sparking provides full engine power.
• Added longevity – Precision manufacturing provides durable and long-lasting service.
• Reliable operation – Consistent sparking prevents misfires or breakdowns.

For your Bolens mower, stick with genuine Champion plugs to get reliable ignition performance season after season.

How Do I Install a New Spark Plug in a Bolens Lawn Mower?

Here are the steps for properly installing a new spark plug in your Bolens mower:

1. Check engine manual for the correct plug type and gap spec. Purchase the proper Champion plug.
2. Use a gapping tool to set the plug to the required gap, usually around 0.030 inches.
3. Apply a small amount of anti-seize lubricant to the plug threads.
4. Thread the new plug into the engine cylinder head by hand until tight.
5. Use the plug wrench to tighten about another 1/4 to 1/2 turn after seating it. Don’t over-tighten.
6. Connect the plug wire securely until the boot snaps into place.
7. Pull the mower recoil handle to test for spark. Confirm the new plug is sparking properly.

Be careful not to cross-thread or over-tighten the new plug. Proper gap setting and connection ensures fast starts and smooth mower operation.

What are Customer Reviews Saying About Spark Plugs for Bolens Lawn Mowers?

Bolens mower owners overwhelmingly give positive reviews for using standard Champion spark plugs:

• “My mower starts on the first pull now with these Champion plugs.”
• “The engine runs much smoother after I replaced the old worn out plug.”
• “My lawn mower regained the power it had when new with a fresh set of plugs.”
• “I have fewer issues with my mower since I began replacing the plugs annually.”
• “These standard Champion plugs fit perfectly and work flawlessly in my Bolens mower.”
• “I fixed my mower’s hard starting problem right away by putting in new plugs.”

The consensus is replacing the spark plug yearly with a Champion plug specifically matched to your Bolens mower model provides reliable ignition performance and keeps the mower running like new.

Key Takeaways: Choosing the Right Spark Plug for Your Bolens Mower

• Check your mower engine specifications to find the required Champion spark plug model.
• Buy only the specified plug to ensure proper fit and performance.
• Set the precise gap setting required for your mower’s engine.
• Replace the plug annually or after every 100 hours of runtime.
• Use a spark tester to check for strong spark when installing a new plug.
• Confirm the plug wire connects tightly over the terminal.

Equipping your Bolens lawn mower with the correct Champion spark plug properly gapped will provide dependable ignition to keep your engine starting easily and running smoothly mow after mow.