How to Start an Old Lawn Mower: Quick & Easy Tips
Having an old lawn mower sitting in your backyard can be frustrating, especially when you want to start mowing your lawn and it refuses to cooperate. But fear not! Starting an old lawn mower doesn’t have to be a daunting task. With a little know-how and some simple steps, you can breathe new life into that dusty relic and have it running smoothly in no time.
So grab your tool belt and let’s get started on reviving that old mower!
๐ฑ Stay Connected with Our Gardening Community! ๐ฑ
Want to stay updated with the latest gardening tips, trends, and personalized solutions? Subscribe to our newsletter at BackyardLord.com! Our team of experts and fellow gardening enthusiasts will keep you informed and inspired on your gardening journey.
Why Subscribe to Our Newsletter?
- ๐ฟ Get customized gardening solutions delivered straight to your inbox.
- ๐ฟ Connect with like-minded individuals passionate about gardening.
- ๐ฟ Share your knowledge and learn from others' experiences.
- ๐ฟ Stay updated on the latest gardening trends, tools, and techniques.
Don't miss out on valuable gardening insights and updates! Subscribe to our newsletter today and let's grow together.
Introduction
Having trouble starting your old lawn mower? Don’t worry, you’re not alone! Starting an old lawn mower can sometimes be a bit of a challenge, especially if it hasn’t been used in a while. But with the right techniques and a little bit of patience, you can get that old mower up and running again in no time. The first thing you’ll want to do is make sure you have a fresh supply of gasoline in the mower.
Old gas can become stale and cause starting problems, so it’s best to start with a full tank of new fuel. Next, check the spark plug. A worn or dirty spark plug can prevent the engine from starting, so it’s a good idea to clean or replace it if necessary.
Once you’ve taken care of the fuel and spark plug, the next step is to prime the engine. This means pumping the primer bulb (located on the side of the engine) a few times to send fuel into the carburetor. This helps create the right fuel-to-air ratio for starting.
Now comes the moment of truth: pulling the starter cord. Give it a firm, steady pull and listen for the sound of the engine trying to start. If it doesn’t start on the first try, don’t panic.
Give it a couple more pulls, making sure to use a smooth and steady motion. If the engine still doesn’t start, you may need to check the air filter. A dirty or clogged air filter can restrict airflow to the engine and prevent it from starting.
Remove the air filter and clean or replace it if necessary. Another thing to consider is the carburetor. Over time, the carburetor can become clogged with dirt and debris, causing starting problems.
Why starting an old lawn mower may be difficult
starting an old lawn mower, difficult Introduction: Starting an old lawn mower can be a real challenge. If you’ve ever found yourself frustratedly pulling on the starter cord repeatedly, only to be met with a loud sputter or worse, silence, then you know exactly what I’m talking about. But why is it so difficult to start an old lawn mower? Well, let’s dive into some of the common reasons and solutions for this common problem.
Importance of proper starting technique
starting technique Introduction: Proper starting technique is a crucial aspect of any physical activity or sport. Whether you are a runner, a weightlifter, or a gymnast, how you initiate your movements can greatly impact your performance and reduce the risk of injury. Many people underestimate the importance of starting technique and focus more on the end result.
However, a strong and efficient start sets the foundation for success. In this blog post, we will explore why starting technique is vital, how it can improve your performance, and some tips to develop better starting techniques in different sports and activities. So, let’s dive in and discover the secrets of a powerful start!
Step 1: Check the fuel
So, you’ve got an old lawn mower gathering dust in the garage and you’re wondering how to bring it back to life? Well, the first step is to check the fuel. Over time, the fuel in your mower’s tank can become stale and clog the carburetor, making it difficult to start. To check the fuel, start by emptying any old fuel from the tank and giving it a good clean.
Then, fill the tank with fresh, clean fuel. Make sure to use the correct type of fuel as recommended by the manufacturer. Once you’ve done that, give the mower a few pumps or pulls to prime the fuel system.
Now, try starting the engine and see if it fires up. If it does, congratulations! You’re one step closer to getting that old mower running again. If not, don’t worry, there are more steps to try.
But for now, let’s just focus on step one: checking the fuel.
Ensure there is enough fuel in the tank
In order to ensure a smooth and uninterrupted journey, it is essential to have enough fuel in your vehicle’s tank. Checking the fuel level should be the first step before embarking on any trip. Imagine heading out on a road trip and suddenly realizing that the tank is almost empty! It would not only be frustrating but also could leave you stranded on the side of the road.
Just like how we ensure we have enough energy to get through the day, our vehicles need fuel to keep running smoothly. So, before you hit the road, take a moment to check the fuel level and top it up if needed. It’s better to be safe than sorry!
Inspect the fuel for any signs of contamination
When it comes to inspecting the fuel for any signs of contamination, there are a few key steps to follow. First and foremost, you’ll want to visually inspect the fuel to see if there are any obvious signs of contamination. This could include things like dirt, water, or debris floating in the fuel.
Additionally, you’ll want to check the fuel’s color. Fuel that is dark or discolored could indicate the presence of contaminants. Another important step is to check for any unusual smells coming from the fuel.
If the fuel has a strong or foul odor, it could be a sign that it is contaminated. Taking the time to carefully inspect the fuel before using it can help ensure that your equipment or vehicle runs smoothly and efficiently.
Step 2: Inspect the spark plug
When it comes to starting an old lawn mower, one crucial step is to inspect the spark plug. The spark plug plays a vital role in igniting the fuel in the engine and getting the mower up and running. Over time, the spark plug can become dirty or worn out, which can impede its ability to create a strong spark.
To inspect the spark plug, start by removing the spark plug wire from the top of the spark plug. Then, use a spark plug wrench to remove the plug from the engine. Take a close look at the electrode and the porcelain insulator.
If there is a buildup of carbon or the electrode is worn down, it’s time to replace the spark plug. If the spark plug looks clean and in good condition, you can try cleaning it with a wire brush or a specialized spark plug cleaner. By inspecting and maintaining the spark plug, you can ensure that your old lawn mower starts smoothly and efficiently.
Locate and remove the spark plug
To properly inspect a spark plug, the first step is to locate and remove it from the engine. The spark plug is a crucial component of the ignition system, responsible for igniting the air-fuel mixture in the combustion chamber. To locate the spark plug, you may need to refer to the owner’s manual or consult a professional for guidance.
Once you have located the spark plug, you will need to remove it using a spark plug socket and ratchet. It’s important to be gentle when removing the spark plug to avoid damaging the threads or breaking the ceramic insulator. Once the spark plug is removed, you can proceed with inspecting it for any signs of damage or wear.
Check for fouling or damage
In step 2 of inspecting your spark plug, it’s important to check for any fouling or damage. But what exactly does that mean? Fouling refers to the buildup of deposits on the spark plug, which can happen over time due to the combustion process. These deposits can be caused by oil or fuel additives, and they can affect the performance of your spark plug.
Damage, on the other hand, can come in various forms, such as a cracked insulator or a worn electrode. It’s essential to inspect your spark plug carefully for any signs of fouling or damage because these issues can lead to misfires, poor fuel efficiency, and even engine damage. So, take a close look at your spark plug and ensure it’s in good condition before reinstalling it in your engine.
Clean or replace the spark plug if necessary
In the world of lawn care, one of the most important factors for ensuring your lawn mower functions properly is the spark plug. So, in step 2 of our maintenance guide, it’s time to inspect the spark plug. Why is this important? Well, the spark plug is responsible for igniting the fuel in the combustion chamber, which in turn powers the engine.
Over time, the spark plug can become dirty or worn out, leading to problems with starting, poor performance, or even engine misfires. To inspect the spark plug, you’ll want to remove it from the engine using a spark plug socket and extension. Take a close look at the electrode and center insulator.
If there is heavy carbon buildup or the electrode is worn down, it’s time to clean or replace the spark plug. Cleaning can be done using a wire brush and some solvents. However, if the spark plug is damaged or heavily worn, it’s best to replace it with a new one.
Taking the time to inspect and maintain the spark plug will help to ensure optimal performance and keep your lawn mower running smoothly.
Step 3: Clean the air filter
Now that you’ve taken care of the spark plug and fuel, it’s time to move on to the next step in starting an old lawn mower: cleaning the air filter. Over time, debris and dirt can clog the air filter, restricting airflow and making it harder for your lawn mower to start. Cleaning the air filter is a relatively simple process and can make a big difference in getting your mower up and running.
Start by locating the air filter housing, usually located near the carburetor or the engine’s side panel. Remove the cover or casing and take out the air filter. Inspect it for any visible dirt or debris.
If it looks dirty, rinse it off with water or lightly brush it to remove any buildup. Once it’s clean, allow it to dry completely before reinstalling it. This simple step can greatly improve the performance and lifespan of your old lawn mower.
Locate the air filter housing
“air filter housing” The air filter housing is an important part of your vehicle’s engine system. It is usually located under the hood, near the front of the car. You may need to refer to your carโs user manual or check online for the exact location of the air filter housing in your specific make and model.
Once you have located it, you can proceed to clean the air filter. Cleaning the air filter is essential for proper engine performance and fuel efficiency. Over time, dust, dirt, and debris can accumulate in the filter, restricting airflow and causing your engine to work harder.
Cleaning the air filter regularly will help to maintain optimal air flow and keep your engine running smoothly.
Remove the air filter and inspect it
When cleaning your car’s air filter, it’s important to first remove it and inspect it for any dirt or debris. The air filter plays a crucial role in ensuring that clean air enters the engine, so any clogs or buildup can affect the performance of your vehicle. Removing the air filter is usually a straightforward process, as it is typically located in a plastic housing near the engine.
Once removed, hold it up to the light and inspect it for any signs of dirt or damage. If you notice a significant amount of dirt or debris, it’s time to clean or replace the filter. Cleaning the air filter involves using compressed air or tapping it gently to remove any loose particles.
However, if the filter appears to be damaged or excessively dirty, it’s best to replace it altogether for optimal engine performance. Keeping your air filter clean is essential for maintaining good air quality and ensuring that your engine runs smoothly.
Clean or replace the air filter if needed
clean or replace air filter, air filter maintenance When it comes to maintaining your HVAC system, one important task is to clean or replace the air filter regularly. The air filter plays a crucial role in keeping the air in your home clean and free from dust, pollen, and other harmful particles. Over time, the air filter can become clogged with dirt and debris, reducing its efficiency and causing the system to work harder.
This can lead to higher energy bills and poor indoor air quality. To clean the air filter, you can start by turning off the HVAC system and locating the filter. Remove the filter and inspect it for any signs of damage or excessive dirt buildup.
If the filter is still in good condition, you can use a vacuum cleaner or a soft brush to remove the dirt and debris. However, if the filter is damaged or extremely dirty, it is best to replace it with a new one. Replacing the air filter is a relatively easy task that can greatly improve the performance of your HVAC system and the air quality in your home.
It is recommended to check the air filter every month and replace it every 3 to 6 months, depending on the level of dust and allergens present in your home. By regularly cleaning or replacing the air filter, you can ensure that your HVAC system runs efficiently and provides clean, healthy air for you and your family.
Step 4: Prime the engine
So you’ve finally found that old lawn mower hidden away in the garage or shed. Maybe it was your parents’ or even your grandparents’ prized possession. Now it’s time to give it new life and get it up and running again.
But where do you start? Well, step 4 in our guide on how to start an old lawn mower is to prime the engine. Priming the engine is an essential step when starting a lawn mower, especially if it hasn’t been used in a while. To prime the engine, locate the primer bulb on the side of the carburetor – it’s usually a small, rubber bulb that you can press.
Give it a few pumps until you can see fuel flowing through the clear fuel lines, or until you feel resistance in the bulb. This will ensure that the carburetor and engine have enough fuel to start properly. Think of priming the engine like giving it a little boost of energy, just like when you drink a cup of coffee in the morning to wake you up before starting your day.
It helps to get the fuel flowing and prepares the engine for ignition. Once you’ve primed the engine, you’re ready to move on to the next step โ starting it up! Remember, it’s important to follow the manufacturer’s instructions when priming the engine, as each lawn mower may have slightly different requirements. And don’t forget to check that you have enough fuel in the tank before you start.
So go ahead, give your old lawn mower the love it deserves and prime that engine!
Locate the primer bulb or choke
“primer bulb” and “choke” When starting up a small engine, such as on a lawnmower or snowblower, it’s important to prime the engine before attempting to start it. The primer bulb or choke is a key component in this process. To locate the primer bulb or choke, you’ll want to look for a small rubber button or lever near the engine.
It is often easily accessible on the side or top of the engine. The primer bulb serves to draw fuel into the carburetor to ensure there is adequate fuel in the system for starting. The choke, on the other hand, restricts the amount of air entering the engine, which can help to enrich the fuel mixture and aid in starting the engine when it is cold.
Once you’ve located the primer bulb or choke, you’ll want to use it to prime the engine. This typically involves pressing the bulb or pulling the choke out. The number of times you’ll need to press or pull will depend on the specific engine, so it’s a good idea to consult the owner’s manual for your equipment.
Typically, you’ll want to perform this step before attempting to start the engine, especially if it hasn’t been used in a while or if it’s cold outside. By priming the engine with the primer bulb or choke, you’re ensuring that there is an adequate fuel-air mixture present in the carburetor, which is crucial for starting the engine. Neglecting to prime the engine properly can result in difficulty starting, or the engine failing to start altogether.
So, remember to locate the primer bulb or choke on your small engine and give it a few pumps or pulls before starting up.
Press the primer bulb or engage the choke as instructed by the manual
To start up your lawnmower or other small engine, it’s important to follow the instructions in the manual. In step 4 of the process, you’ll need to prime the engine. This can be done by pressing the primer bulb or engaging the choke, as indicated in the manual.
The primer bulb is a small rubber bulb that helps to draw fuel into the carburetor. It’s usually located on the side of the engine, near the fuel tank. When you press the primer bulb, it creates a vacuum that pulls fuel into the carburetor, making it easier to start the engine.
Engaging the choke, on the other hand, restricts the air supply to the engine, making it easier to start by allowing a richer fuel mixture. This is especially useful when starting the engine from a cold start. By following the instructions in the manual, you’ll ensure that the engine is properly primed and ready to start.
This process will help to ensure a smooth start and prevent any potential issues that could arise from a lack of fuel or an insufficient air-fuel mixture. So be sure to press that primer bulb or engage the choke as instructed to get your engine running smoothly.
Step 5: Pull the starter rope
So, you’ve managed to get your old lawn mower up and running and you’re ready to start mowing your lawn. But now you’re faced with the task of actually starting the engine. Don’t worry, it’s not as complicated as it may seem.
The first step is to pull the starter rope. This may require a bit of strength, especially if the mower hasn’t been used in a while. So, grab hold of the starter rope and give it a good, firm pull.
You may need to do this a few times before the engine actually starts. If you’re having trouble, try gripping the handle of the mower with one hand and using that leverage to give the starter rope a strong, steady pull. And remember, don’t give up too easily.
Starting an old lawn mower can sometimes require a bit of perseverance.
Find the starter rope handle
In this step, we will find the starter rope handle and prepare to give it a good pull. The starter rope handle is usually located on the side of the mower, near the engine. It may be covered by a small plastic or rubber cap, so you may need to remove it to access the handle.
Once you’ve located the handle, make sure you have a firm grip on it. Give it a quick tug to ensure it moves smoothly and doesn’t get stuck. This will help prevent any unexpected jerks or jolts when you start the mower.
Now that you’ve found the starter rope handle, it’s time to move on to the next step and give it a pull to get the engine running.
Hold the handle firmly and pull the rope in a smooth, quick motion
When it’s time to start up your lawnmower or other small engine, pulling the starter rope might seem like a simple task. But there’s actually a technique to it that can ensure a smooth and successful start every time. To begin, make sure you have a firm grip on the handle of the starter rope.
This will give you the control you need to pull it with enough force. Then, with a quick motion, pull the rope towards you. The key here is to be smooth and quick, rather than slow and jerky.
This will help to engage the engine and get it going. Just remember to keep a firm grip on the handle and use a smooth, quick motion. With a little practice, you’ll become a pro at starting your small engine in no time.
So go ahead, give it a try!
Step 6: Adjust the throttle
Now that you’ve gone through the previous steps and got your old lawn mower running, it’s time to fine-tune the engine. Adjusting the throttle is an important part of starting an old lawn mower, as it controls the amount of air and fuel that enters the engine. This adjustment is necessary to ensure the engine runs smoothly and efficiently.
To adjust the throttle, locate the throttle lever on your mower. It is typically located near the engine and may have different settings such as “slow” and “fast”. Start by setting the throttle lever to the “slow” position.
Before starting the engine, make sure the spark plug wire is disconnected to prevent any accidental starts. Now, slowly move the throttle lever from the “slow” position to the “fast” position and listen to the sound of the engine. The goal is to find the sweet spot where the engine sounds smooth and steady.
If the engine sounds rough or sputters, you’ll need to adjust the throttle. To do this, locate the throttle adjustment screw, which is usually located on the carburetor. Turning the screw clockwise will increase the throttle, while turning it counterclockwise will decrease the throttle.
Start by turning the screw a quarter of a turn in one direction and listen to the engine. If it improves, keep turning the screw in that direction until the engine sounds smooth. If the engine gets worse, turn the screw in the opposite direction.
Continue adjusting the screw in small increments until you find the optimal throttle setting for your lawn mower. Once you’ve found it, tighten any screws or nuts that may have loosened during the adjustment process. Remember, it may take a few tries to find the perfect throttle setting, so be patient and keep experimenting.
Locate the throttle control
The throttle control is an essential component of a car’s engine system. It determines how much fuel is delivered to the engine and, in turn, controls the speed and power of the vehicle. To locate the throttle control, start by looking at the accelerator pedal.
The accelerator pedal is connected to the throttle control by a system of cables or electronic sensors. The throttle control is usually located at the engine end of this connection. In most cars, it is attached to the intake manifold, which is the part of the engine that delivers air and fuel to the cylinders.
It may be a lever or a valve that can be adjusted to control the amount of fuel entering the engine. Locate the throttle control and adjust it according to the specific instructions provided in your car’s manual. It is important to follow these instructions carefully to ensure proper functioning of the engine.
Set the throttle to the appropriate position for starting
When it comes to starting your engine, one important step that is often overlooked is adjusting the throttle to the appropriate position. The throttle controls the amount of air and fuel that enters the engine, and setting it correctly is essential for a smooth start. To adjust the throttle, you’ll need to locate the throttle control lever, which is usually found on the side of the engine.
Depending on the type of engine you have, there may be different positions for starting. For example, if you have a lawnmower, the throttle may need to be set to the “choke” position for starting. On the other hand, if you have a car, the throttle may need to be set to a specific RPM (revolutions per minute) for starting.
It’s important to consult your owner’s manual or do some research to determine the correct position for your specific engine. Once you’ve set the throttle to the appropriate position, you’re ready to move on to the next step in starting your engine.
Troubleshooting tips
So, you’ve got an old lawn mower sitting in your shed that you want to fire up again? Don’t worry, with a little troubleshooting, you can get that trusty machine running smoothly in no time. The first thing you’ll want to do is check the fuel. If the lawn mower has been sitting idle for a while, the fuel may have gone stale or evaporated entirely.
If that’s the case, drain the old fuel and replace it with fresh gasoline. Another common issue with old lawn mowers is a clogged carburetor. This can prevent fuel from reaching the engine, causing it to fail to start.
To fix this, remove the carburetor and clean it thoroughly. You may also want to check the spark plug. Over time, the spark plug can become dirty or worn out, making it difficult for the engine to ignite the fuel.
If the spark plug looks damaged, replace it with a new one. And finally, be sure to check the oil level. A lack of oil can cause the engine to seize up and prevent the lawn mower from starting.
If the oil is low, top it up with the recommended type and amount. By following these troubleshooting tips, you’ll be able to revive your old lawn mower and get back to mowing the lawn in no time.
If the mower doesn’t start after several attempts, troubleshoot the problem
troubleshoot, mower, start, attempts, problem. So, you’ve tried starting your lawn mower a few times and it just won’t start. Frustrating, right? Well, don’t worry – troubleshooting the problem might be easier than you think.
There could be a few reasons why your mower isn’t starting, but let’s start with the most common one: a clogged air filter. Over time, the air filter can become dirty and blocked, preventing air from getting into the engine and causing the mower to stall. One simple fix is to remove the air filter and give it a good clean or replace it with a new one if needed.
Another thing to check is the spark plug. If it’s dirty or worn out, it may not be producing enough spark to ignite the fuel and start the engine. In this case, simply cleaning or replacing the spark plug should do the trick.
Lastly, you’ll want to make sure that your fuel tank isn’t empty and that your fuel is fresh. Old or stale fuel can lead to starting issues, so it’s always a good idea to refill with fresh fuel if needed. So, before you call for professional help, give these troubleshooting tips a try – you might just be able to get your mower up and running again in no time!
Common issues and possible solutions
“Common issues and possible solutions”
Conclusion
In conclusion, starting an old lawn mower is like rekindling an old flame. You have to approach it with patience, determination, and a touch of charm. Just like winning over the heart of your crush, you need to set the stage by giving it a clean and magical touch.
Then, you must show it some love by giving it the attention it deserves. And finally, with a little bit of finesse and a dash of skill, you can ignite that spark that brings this vintage beast back to life. So, dust off your cap, grab your tools, and get ready to woo your old lawn mower into roaring action.
Remember, when it comes to starting an old lawn mower, it’s all about igniting the passion and reviving the old flame!”
Regular maintenance can help prevent starting issues
Regular maintenance plays a crucial role in keeping your vehicle in top shape and preventing starting issues. By taking the time to regularly inspect and service your car, you can catch potential problems before they become major headaches. One troubleshooting tip is to check the battery connections and ensure they are clean and secure.
Loose or corroded connections can prevent the battery from delivering a strong charge to the starter, resulting in difficulty starting the engine. Another tip is to check the spark plugs, as worn or fouled plugs can interfere with the ignition process and cause starting issues. Additionally, it’s important to inspect the fuel system, including the fuel filter and injectors, as clogged or dirty components can restrict the flow of fuel to the engine, making it harder for the car to start.
Regular maintenance not only helps prevent starting issues but also promotes overall performance and longevity of your vehicle. So, take the time to give your car the attention it deserves and save yourself from the frustration of a car that won’t start.
Following these steps will increase the likelihood of starting an old lawn mower
Starting an old lawn mower can be a frustrating task, but with a few troubleshooting tips, you can increase the likelihood of getting it up and running. First, check the fuel. Make sure the gas tank is filled with fresh gasoline and that the fuel filter is clean.
If the fuel is old or contaminated, it may be preventing the engine from starting. Next, check the spark plug. Over time, the spark plug can become worn or dirty, inhibiting its ability to ignite the fuel-air mixture.
Remove the spark plug and clean or replace it if necessary. Another common issue with old lawn mowers is a clogged carburetor. To fix this, remove the carburetor and clean it thoroughly with carburetor cleaner.
Lastly, check the air filter. A dirty air filter can prevent proper airflow, which is necessary for combustion. Clean or replace the air filter if it is dirty or worn.
By following these troubleshooting steps, you can increase the chances of starting your old lawn mower and getting your yard back in shape.
FAQs
Why won’t my old lawn mower start?
There could be several reasons why your old lawn mower won’t start. It could be due to a clogged carburetor, a dirty air filter, a faulty spark plug, or insufficient fuel. Check these components and ensure they are clean and working properly.
How do I clean the carburetor on an old lawn mower?
To clean the carburetor on an old lawn mower, first, locate the carburetor. Remove the air filter and then the carburetor cover. Use a carburetor cleaner to spray and clean the inside of the carburetor, paying attention to any clogs or dirt build-up. Reassemble the carburetor and try starting the lawn mower again.
What could be causing a weak spark on my old lawn mower?
A weak spark on an old lawn mower can be caused by a faulty spark plug or a problem with the ignition coil. Check the spark plug for any signs of damage or wear, and replace it if necessary. If the problem persists, have the ignition coil tested and replaced if needed.
How do I troubleshoot a dirty air filter on an old lawn mower?
If your old lawn mower has a dirty air filter, it can impede the engine’s performance and cause starting issues. To troubleshoot a dirty air filter, remove it from the lawn mower and inspect it for dirt or debris. If it’s dirty, clean or replace the air filter with a new one. Reinstall the air filter and try starting the lawn mower again.
What should I do if my old lawn mower is not getting fuel?
If your old lawn mower is not getting fuel, start by checking the fuel tank for any blockages or clogs. Ensure the fuel line is not kinked or damaged. If these components are fine, inspect the carburetor for any fuel-related issues. Clean or replace the carburetor if necessary.
How often should I change the oil in my old lawn mower?
It is recommended to change the oil in your old lawn mower every 25 hours of use or at least once per season. Regular oil changes will help keep the engine running smoothly and prevent any performance issues.
Can I use ethanol-blended gasoline in my old lawn mower?
It is generally not recommended to use ethanol-blended gasoline in old lawn mowers, as ethanol can cause damage to the carburetor and other engine components. Stick to using regular unleaded gasoline for better performance and longevity of your lawn mower.