Bad Fuel Symptoms. Gasoline for lawn mowers

Bad Fuel Symptoms

You make your way to the garage or shed, ready to tackle the day’s yard work, only to find that your lawn mower won’t start.

Did you know that bad gas is one of the most frequent causes of small engines not starting? Read on to learn about how to diagnose and treat engines affected with bad gas.

fuel, symptoms, gasoline, lawn

How long can gas be stored before it goes bad?

Whether in a gas can or in your mower, gas can go stale and lose its volatility in as little as 30 days. Using Sta-Bil Storage Fuel Stabilizer can increase storage time up to 24 months. Of course, many factors contribute to how long gas can be stored, including storage location, temperature, condition of the fuel container, and more.

What are the symptoms of bad gas?

If your lawn mower is difficult to start, idles roughly, stalls out, or makes a “pinging” sound, you may have a case of “bad gas”. And no, we’re not talking about the after-effects of dinner at your favorite Mexican restaurant.

How can I tell if the gas has gone bad?

The easiest way to diagnose gas is to smell the fuel in question. Oxidized gas has a sour smell and is much stronger smelling than fresh gas. The other method is to drain a sample from your machine’s fuel tank or your gas can into a clear glass container. If the gas is dark in color, it has more than likely gone bad. See the image below for a comparison between the color of fresh gas (Left) to gas that has oxidized (Right) and should not be used in your equipment.

fuel, symptoms, gasoline, lawn

Note the color of fresh gas (Left) compared to gas that has oxidized (Right)

What should I do if my equipment has bad fuel?

The best solution is to drain the gas from your equipment and replace with fresh gas. Remember to properly dispose of the old fuel.

How can bad gas affect my lawn mower?

If fuel was stored in the unit for an extended period, areas such as fuel lines and the metering needle may have become gummed up from the old fuel mixture. As gas ages, hydrocarbons in the fuel mixture evaporate and the remaining fuel becomes tacky or varnish-like. This can cause deposits and blockages in your equipment’s fuel system. In severe cases, professional cleaning of the carburetor and a possible carburetor rebuild are the only cure for this situation.

To verify this condition, remove the spark plug(s). If you can’t smell fuel in the combustion cylinder or see or smell fuel on the bottom of the spark plug, the fuel passageways are likely obstructed. If the carburetor is clogged, the use of spray carburetor cleaner and pressurized air may clear the obstruction. If this fails, then you should contact an experienced engine service center to have the system professionally and thoroughly cleaned.

Get the Parts and Tools You Need to Maintain Your Equipment Here at MTD Parts!

Spark plug wrench or socket tool (common sizes are 5/8″, 3/4″ and 13/16″)

Choosing Between Gas Vs. Electric Lawn Mower

fuel, symptoms, gasoline, lawn

A lush, beautiful lawn requires more than a sprinkle of water and a weekly mow. Lawn maintenance is an intricate science requiring proper feeding, aeration, and pest control for optimal protection from weeds, insects, and diseases that can wreak havoc on your grassy paradise. With the proper care program in place, you can rest assured knowing your flowers, shrubs grass are well-defended against all manner of lawn-damaging pests.

Mowing your lawn is not only necessary for a pristine appearance but also essential to ensure the health and strength of each blade. By mowing regularly, you’ll guarantee that every part of your grass receives adequate sunlight, water, and fertilizers – promoting strong growth with time. over, during each trimming session, the strongest blades will thrive while weaker ones wither away – providing optimal results. You can take care of the lawn and garden better using Smart home gardening products. These products integrate technology with lawn and garden maintenance, making your work easier. To achieve this, you need to use the premium garden tools in the market.

When it comes to choosing the right lawn mower, consumers have two lawn mower types: gas-powered or electric. Both models offer unique advantages, so here’s a look at which option best fits your needs.

Comparison Of Electric and Gas Lawn Mowers

Choosing between an electric lawn mower and a gas-powered lawn mower can be a difficult process. With both mowers offering their distinct benefits, it’s essential to consider the pros and cons of each before making your final choice.

What Is an Electric Lawn Mower?

Battery-powered electric lawn mowers are considered as one of the best-rated garden tools and are more powerful and efficient than ever before, providing the convenience of cordless operation while being better for the environment than gas models.

On the other hand, a corded electric mower is an economical alternative to a battery-powered lawnmower, but it requires being plugged into a nearby outlet while in use.

You can expect both electric mowers to be lightweight, with some models weighing a little over 34 pounds. This makes them easy to maneuver and store after each trimming session. The noise output of electric mowers is significantly lower as well, making them an excellent choice for those who prefer a quieter operation.

How Do Electric Mowers Work?

The lawn-and-garden industry has two types of electric mowers that operate with electricity, yet the distinction between them lies in their power source. There are two primary types of tools: corded and cordless. It’s evident that the main difference is cords versus no cords; however, there are a few more differences between them.

Corded Mower

Corded electric mowers are perfect for small lawns due to their unlimited run time as long as they can access an adequate power source. However, the larger the yard size is, the longer cord you will need to reach everywhere. That being said, corded electric mowers offer a reliable and continuous supply of energy that makes them suitable for cutting grass over short distances seamlessly.

Cordless Mower

Cordless mowers are powered by batteries, meaning you must charge them for extended periods to continue trimming your grass. Once the battery runs out, so does your grass-cutting session – like any other battery-operated device. It is essential to properly charge up its power source to maximize cutting times and get the most use out of a cordless mower.

Benefits Offered by an Electric Mower

If you have a small yard and mostly flat terrain with few obstacles, then an electric lawnmower can truly elevate your mowing experience. Here are some reasons why battery-powered mowers are the better choice for yards up to two acres:

  • Lower Maintenance Cost – Since electric mowers do not use oil, clutch, throttle, belts, and gears, you’ll avoid a lot of maintenance compared to their gas counterparts. You wouldn’t have to bother about refilling on petrol either; that equates to no more fuss with spills or extra expenditure for fuel!
  • Zero Emissions.Electric-powered mowers provide an eco-friendly, zero-emission ride. Exhaust, carbon monoxide, and unburned hydrocarbons are not emitted from the onboard power source for a healthier environment. Not only does this benefit the planet, but it also helps you breathe cleaner air!
  • Quieter Operation – A battery-powered mower can generate up to 82 decibels, lower than the threshold for a person to experience harmful exposure. On the other hand, gasoline mowers are much louder and boast 95 decibels- similar in sound volume to a motorcycle! Using an electric lawnmower will be significantly less disruptive for your neighbors if you reside in an urban or suburban area.
  • Easier Maneuverability – Electric lawnmowers are not as heavy as their gas-powered counterparts. Due to this, this weed removal machine is easier to maneuver around tight corners and navigate through your yard.

What Is A Gas Lawn Mower?

Gas-powered mowers depend on the capacity of their fuel tank for runtime. Most lawnmowers have a one-gallon gas tank that is enough to finish cutting a sizable family-sized yard in one go from start to finish. Refilling the tank is possible when you run out, but remember to add oil as well! A two-stroke motor calls for this lubrication so it can operate efficiently and its engine parts glide seamlessly.

How Do Gas Mowers Work?

A gas-burning mower combines air and fuel to generate an internal explosion inside the cylinder. The machine then captures this blast and converts it into kinetic energy that powers it forward.

Don’t assume what type of fuel your lawn mower needs – it could be detrimental to the engine and even lead to voiding its warranty. To avoid mishaps, check the owner’s manual for your model’s specific requirements. However, most mowers require high-grade unleaded fuel or a mix of oil and gas.

Two-stroke engines necessitate a combination of gas and oil, with the proportions varying according to brand. Additionally, if you don’t plan on using your lawnmower for over 30 days, then make sure to add a fuel stabilizer into a full tank of gasoline, as this will protect the machine’s carburetor and engine from deteriorating due to stale petrol.

Benefits Offered by a Gas Mower

Gas mowers offer plenty of advantages over electric models, particularly when it comes to larger lawns or yards with hills. You can expect the following benefits from this type of machine:

  • Longer Operational Time – Gas-powered lawn mowers come in a variety of styles, with the largest versions packing up to two gallons of fuel capacity. Nevertheless, most models boast one-gallon tanks that are perfect for keeping your backyard looking neat and tidy! You can easily take on larger yards with this much fuel without stopping mid-mow.
  • Plenty of Power – With a gas-powered lawnmower, getting the job done has never been easier! These machines are designed to slice through even the toughest grasses effortlessly as soon as you turn them on. Plus, with more affordable models possessing powerful motors that can handle any terrain or climate condition, your mowing experience is sure to be second to none.
  • Suitable for Wet Grass – A gas-powered lawnmower is the ultimate solution for managing moist turf. Its high-torque motor can easily breeze through the grass with maximum efficiency, running for extended periods without issue.
  • Strong and Durable – Gas-powered lawnmowers are incredibly indestructible compared to electric models. This is because the solid motor efficiently cuts through even long grass with minimal effort and for a longer duration than electric models. Plus, you get more value for your money since one pass will suffice, unlike regular electric mowers that require multiple passes over areas to achieve an acceptable result.

Which Is Better: Electric Vs. Gas Lawn Mowers?

Gas-powered lawnmowers are still the go-to choice for many homeowners. Gas mowers offer more power than battery-powered models to handle challenging conditions and longer grass – even in the hottest temperatures!

On the other hand, electric lawnmowers make less noise and are more eco-friendly than gas-powered motors. They are also much more lightweight and easier to maneuver, so they’re great for smaller lawns.

Overall, the choice between electric vs. gas lawnmowers comes down to your needs, budget, and preferred features. An electric mower may be the perfect option if you have a small or flat yard with limited obstacles and like quiet operation. However, a gas-powered mower could be the better choice if you have a larger yard with thick or damp grass. Consider all your options and select the best lawn-mowing solution that fits your needs!

In conclusion, these lawn mower types offer their benefits and drawbacks. Ultimately it is up to you and your preferences to choose the best type of mower for your lawn. Consider factors such as the size of the yard, terrain, budget, and environmental impact when selecting the perfect lawn mower for your needs. With either option – electric or gas – you can get a beautiful, healthy lawn that will make any homeowner proud.

Do You Mix Oil and Gas for Lawnmower? (What You Need to Know)

If you’re a new lawnmower owner, you might be wondering, “Do you mix oil and gas for a lawnmower?” And if so, what’s the oil and gas ratio you should add?

The short answer is that 2-cycle engine lawnmowers require a gas and oil mixture for fuel, while 4-cycle engines run on straight gasoline. The most common gas and oil mix ratio for lawnmowers are 50:1, but you’ll want to refer to your owner’s manual for your particular model’s recommended gas and oil mixture ratio.

This can be confusing, primarily if you’ve never owned a lawnmower.

In the following paragraphs, we’ve provided all the information you need to help you answer any questions you may have regarding this topic, so stick around.

Do You Mix Oil and Gas for Lawn Mower?

You might be able to mix oil and gas and add them to a lawnmower. However, it’ll all depend on the type of engine your mower has.

Some engines allow you to add oil and gas together, while others will only work if you add them separately. This is why it’s essential to know the type of engine your unit is housing before you start mixing oil and gas.

What Engines Can You Mix Gas and Oil In?

Lawnmowers typically house one of two types of engines. The first is the two-cycle/cylinder engine, and the second is a four-cycle/cylinder engine.

If you own a two-cycle engine, you can add a mix of gas and oil. But, per contra, if you own a four-cycle engine, you need to refrain from mixing the gas and oil, or it may damage your engine.

If you checked and saw that you own a four-cycle engine, you’ll also notice that there are different tanks and openings where you can add oil and gas separately.

How to Know If You Own a Two-Cycle or Four-Cycle Engine?

There are many ways you could differentiate between a two-cycle engine and a four-cycle one. The most common way is to check the engine’s port. If it only has a single opening, then it’s a two-cycle engine, and you can add your oil and gas mix without any worries.

If you find two ports separating two tanks, then it’s a four-cycle engine, and you’ll need to add your gas and oil separately.

Another way to recognize the engine’s type is by checking if there are any warning stickers against mixing oils and fuel. You might also find them already labeling the engine as either two-cycle or four-cycle—they can also be called two-stroke or four-stroke, respectively.

If you have any trouble finding out the type directly from the engine, you can check the user’s manual that came with the mower. The manufacturer will always mention whether it’s a two or four-cycle engine in the manual.

What Is the Correct Oil-Gas Ratio to Add to Your Lawn Mower?

If you checked your engine type and found it to be a two-cycle, you can now add in your gas and oil mix. But before you do, you need to make sure you’re adding the appropriate amount.

The amount of gas and oil mixture you add will depend on how much your engine requires. Some two-cycle engines use a 50:1 gas to oil ratio; others use 40:1. Some older models may use 32:1.

You can check the ratio your engine uses by checking the port. Most engines will have the ratio written on the cover. If it’s not there, you’ll find it written in the user’s manual.

If you found that your engine uses a 50:1 ratio, you’ll need to mix around 2.6 ounces of oil with 1 gallon of gas.

If your engine uses a 40:1 ratio, add 3.2 ounces of oil to 1 gallon of gas. The 32:1 ratio will need 4 ounces of oil added to 1 gallon of gas.

What Type of Oil and Gas Should You Use?

Most manufacturers will include what type of oil and gas you should use on your grass cutter in their manuals. So checking the manual is a must.

If you have any trouble with the user’s manual, you can refer to the recommended type for each engine.

It’s advised for both two-cycle and four-cycle engines to use an unleaded gas with a minimum 87 octane rating and a maximum of 10% ethanol.

Most gas stations sell fuel with more than 15% ethanol, so be sure to check the ethanol percentage when buying your gas. It shouldn’t exceed 10%, or it may damage your engine.

As for the oil, there are oils available specifically for two and four-cycle engines, respectively, so it’s best to use them for your lawnmower depending on the type of engine you have.

How to Mix Your Gas and Oil Before Use?

Now that you have the gas and oil you need, you can start preparing your mix to use on your mower. Refer to the previous section to know the correct gas to oil ratio you should use.

The first thing you’ll need to do now is to prepare an empty gas bottle. Then, make sure it’s completely clean before adding the new gas.

Afterward, you can add in your oil and then start mixing. You can mix it up by stirring or shaking the bottle well. That should get your mixture ready for use.

Please note that you’ll need to use this gas-oil mixture for one month, or it’ll start losing its effect.

What Happens If You Add the Oil and Gas Mix to a Four-Cycle Engine?

All the previously mentioned steps are specifically for two-cycle engine use. Now, what if you accidentally added this newly made mix into a four-cycle engine instead?

As long as you notice the mistake quickly, there shouldn’t be much of a problem. You’ll need to drain all the mixture you just added out and replace it with the correct gas or oil per tank.

If you turn on your mower before you drain the mixture, it may, unfortunately, be too late, and you’ll start noticing your lawnmower smoking up.

Using an oil and gas mix on a four-cycle engine will cause it to overheat and eventually break down. So it’s best to be entirely sure of which type of engine your lawnmower has before use to avoid causing any damage.

How Often Should You Change Your Gas and Oil?

It’s recommended to replace your gas and oil mix after three weeks to one month of use. You can wait until two months to replace it, but it won’t be as effective anymore.

That’s why it’s better to use a new mixture every three weeks to get the best results and make sure you don’t exhaust your engine.


Lawnmowers tend to have two types of engines, and depending on which type they have, they can use a gas and oil mix, or you’ll need to separate the oil and gas from each other.

If you have a two-stroke engine, you can mix gas and oil without any problems. However, if your mower is equipped with a four-stroke engine, you can’t mix gas and oil. That’s why you need to know the difference before using it.

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I love working in the yard and coming up with projects around the house. In addition, I am blogger. I’ve decided to start this blog to share stuff I learn about yard work, or any projects that are house related. These days I blog about everything related to anything pertaining to the outside of the home. Everything in this blog should be used for educational purposes only. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Privacy Policy

Gas For A Lawn Mower – What You Should Know

Gas for a lawnmower is a tricky subject. It seems like everyone has an opinion on what type of gas to use and how much to put in the mower. The truth is that many different factors go into choosing which fuel will work best for your lawnmower. In this guide, we’ll discuss some of those factors so you can make an informed decision when it comes time to fill up the tank!

The type of gas you use depends on the engine in your lawnmower. Most lawnmower brands specify the best kind of fuel in the owner’s manual. If it’s a four-stroke engine, you can use unleaded gasoline with an octane rating of 87 but NOT higher. Some engines are also acceptable to use gas with 10% ethanol and don’t forget to use a fuel stabilizer.

Best gas for lawn mower

fuel, symptoms, gasoline, lawn

  • Genuine OEM STIHL Part
  • A 50:1 mixture of premium non-ethanol, high-octane motor fuel, and High-Quality Ultra Oil ensures great performance. The Premixed Fuel eliminates the hassle of mixing your own 2-stroke fuel.
  • TruFuel is specifically designed for outdoor power equipment and allows you to have a convenient fuel mix that will save you time
  • Spectrum fuels TruFuel for 2-cycle engines with the correct 40:1 mix ratio to ensure excellent performance delivers superior performance and ensures proper break-in for new gear.

What kind of gas is best for lawn mower engines?

Many people wonder what kind of gas is best to use. There are a few different types, but two that seem most popular for lawn mowers are ethanol-free gasoline and premium octane fuel. The type you choose depends on the engine design of your specific model and how much power it produces when running at peak efficiency. Keep in mind that not every type will work with all engines, so if you have questions about whether or not one of these fuels would suit your needs, then be sure to check instructions for your engine!

Premium octane has been shown to burn more smoothly than other options and produce fewer emissions, which means many manufacturers recommend this option for those who want their equipment’s lifespan extended while also experiencing a quieter, smoother ride.

Ethanol-free gasoline is often the best option for equipment with smaller engines and those who are looking to save on fuel costs in general, but it’s not ideal if you’re worried about long-term wear and tear or want to maximize power at all times!

The type of gas used can make an impact on how much maintenance your lawnmower needs too. Premium octane has been shown to reduce engine knocking when gas gets too low, while ethanol-free gasoline may lead to more frequent clogs and other problems down the line. Consider these factors before deciding which fuel will work best for your specific needs!

Once you know the type of engine in your lawnmower, you can quickly determine the type of gas necessary to keep your machine working.

Four-Stroke Engines

The most popular type of engine for lawn mowers is a four-stroke. It’s also the safest and most reliable option as it requires far less maintenance than other types, making it perfect if you’re looking to avoid any unnecessary problems in the future!

A four-stroke engine can be identified by two valves that open at different times during an operation cycle; one opens on the downward stroke while the second valve stays closed until after combustion has occurred. This means there are two power strokes per revolution instead of just one like with a three-cycle engine.

When considering which fuel would work best for your specific needs, many things come into play: You have to make sure you use gas without ethanol (if possible) and with a high octane rating (usually 91 or higher). This type of fuel has been shown to reduce engine knocking, which means you’ll need less maintenance over time.

If your goal is to maximize power at all times, then be sure that the gas you use contains premium additives to increase the energy released during combustion.

The best option for those who want their equipment’s lifespan extended while also experiencing quieter operation would be ethanol-free gasoline, as it burns more smoothly than other types! Be aware that these fuels may cost more, but they’re worth it if long-term wear and tear is something you care about.

Two-Stroke Engines

The other type of engine found on a lawnmower is the two-stroke. This design has been around since the late 1800s and offers some different benefits over its popular counterpart. Still, it requires more frequent maintenance than others to keep operating reliably.

A two-cycle gasoline engine’s piston will turn twice for every crank revolution instead of once like with a four-stroke engine; this means that there is just one power stroke per crankshaft rotation, unlike with a four-stroke model where there are two.

Some people might be wary about using ethanol fuels as they have fewer octane levels than premium gas or regular fuel, so you’re likely going to need to make sure your equipment isn’t exposed to extreme temperatures if you want to avoid experiencing engine knock.

Two-stroke engines are more responsive than four-strokes, but they do require a bit more gas simultaneously, which may make them less economical in the long run versus other types of equipment!

You also have an option when it comes down to oil for your engine; depending on what type is used will depend on how often you need to change it and whether or not maintenance checks should be done annually instead of semi-annually (which is usually recommended). Be sure that whatever type is selected has been tested for use with two-stroke gasoline mowers before applying anything!

These instructions can save you from any unnecessary breakdowns, so be sure to follow all guidelines carefully when refueling your machine.

Do I need a Fuel Stabilizer for a lawnmower?

For those who have a gas-powered lawnmower, one of the most important questions you may face is how to store gasoline for use properly. A fuel stabilizer will keep your gas fresh and avoid any problems that might arise when using it next season if stored in an appropriate container or tank.

If you decide not to add a stabilizer, make sure your mower has been fully drained from all fluids before storing, as this can help prevent corrosion and other issues from arising over time.

You also need to consider whether or not the type of gas offered meets EPA standards so that you’re able to protect yourself against future fines! All fuels should contain no more than 15% ethanol by volume, but some fuels will have a higher ethanol content than those that are not, and you’ll need to look for information about this if you’re concerned.

If the gas pump doesn’t offer any labeling or has just an “E” on it, then be sure to ask before filling up your tank!

How much gas does a lawnmower use?

A lawnmower typically uses around one gallon of gasoline for each hour it runs. That’s 0.25 gallons per minute or roughly four to five minutes driving time, which is how fast most people motor about properties with a gas-powered machine in tow. For instance, if you use the mower on your yard for two hours every week, then you would be using eight gallons of gas per year—or 56 depending on the price!

Where to buy gas for a lawnmower?

Where gas for lawn mower is sold depends on where you live. In rural areas, it may be possible to find a gas station where one can fill up their tank with gasoline or other fuel; in more densely populated areas such as towns and cities, this will not always be the case. Alternatively, many independent shops specialize exclusively in selling fuels of all types. Here’s what we recommend:

  • Some major chains sell both oil-based (gasoline) products and ethanol blends like E85 from time to time but don’t guarantee they’ll have them all year round.
  • Gas stations also come in several different varieties and sizes–some customers prefer full-service pumps while others would rather self-serve.
  • Since gas stations are generally either self-service or full-service, it’s important to know what type you’re looking for when deciding where to buy gas. Full-serve fuels may be more expensive, but they offer additional benefits such as free air and water (some customers find useful). Fuel fluctuate a great deal from coast to coast and country to country, so if you need help figuring out how much your fuel will cost ahead of time, we recommend using GasBuddy.
  • Some areas offer specific types of gasoline that can sometimes lead people who ignore spending extra money on something their vehicle doesn’t actually require–for example, in the United States, most cars run just fine on regular unleaded gasoline even though there are alternative blends available.
  • For those who choose to buy gas in a canister or jerrycan, there’s more work required since the fuel must be poured into the mower tank and then transferred using an additional hose (which may not come with your purchase). The upside is that it will last for months as opposed to being used up pretty quickly.
  • Finally, if you know what kind of engine your lawn equipment has–whether it runs on gasoline or ethanol-blended fuels like E85–you’ll have a better idea about where you should go when looking for gas.
  • A quick word about prices: Gasoline costs vary from place to place, so while one town might offer regular unleaded at 0.97 a gallon, the next town over might have it priced at 0.91 a gallon.
  • In addition to that difference in pricing, gas is also sold by volume, so you’ll see listed per liter or quart.
  • Gasoline with ethanol can be cheaper than gasoline without ethanol if your car’s engine is compatible–read more about compatibility below!
  • If one lives somewhere where there are plenty of stations nearby, and competition between them keeps low, they will likely find their best deal on fuel for lawn mower buying from the “lowest price” station (instead of paying whatever cost happens to be posted).

Learn How to Gas Up Your Lawn Mower

You’ll need to know the type of lawnmower by the engine. Your owner’s manual should provide you with the exact type of engine and even the best fuel.

There are typically two types of lawnmower engines: four-stroke and two-stroke engines. However, most lawn mowers today have four-stroke engines. Larger engines will have 140-cc to 190-cc. These are made for taller, more robust grass and leaf mulching (for instance, you can find the best lawnmowers for 1 acre here).

How to fill a lawnmower with gas

When purchasing a lawnmower, you should always check that the gas tank and oil chamber are easy to find, as you’ll be maintaining these fuels throughout the lifetime of your mower.

Step 1: Locate the Gas Tank

Most walk-behind lawnmowers have a small plastic tank on the side of the mower or at the back. It’s typically located on one side towards the back in riding mowers, just like a car.

Other mowers have a covered gas tank that’s hidden. You may have to find it underneath a cap or symbol.

Step 2: Remove Gas Cap

Just like a car, you’ll typically need to remove a cap by twisting it counterclockwise. There may also be caps that lock in place or others that require a key.

Step 3: Fill Up Your Tank

Determine what gas is best for your engine. If it’s fresh, unleashed gasoline, you can get the same fuel at a gas station.

It’s best to use a nozzle or funnel to spill gas as you pour. Take your time as you pour and pay attention to the fill line in your gas tank.

Step 4: Tighten the Gas Cap and Go!

After you fill the tank, make sure to put the gas cap back on and tighten it. Your mower should be ready to go.

Mistakes to Avoid When Filling Up Lawn Mower

Lawnmowers can be finicky machines. This is because they are typically left in storage for many months when it gets colder or used too frequently to cut moist grass. If not cleaned properly, your lawnmower may stop firing up at all.

  • Draining the tank harms your lawn mower’s carburetor
  • Small droplets of gas are left behind and typically start to get sticky, like a varnish
  • If gas gets stuck in the needle valve tip, the carburetor will be damaged and won’t work properly
  • Gas tanks shouldn’t sit empty for long periods as water vapor can get in the tank and start to condense, triggering rust and corrosion
  • Use a gas stabilizer agent instead when storing your lawnmower

To use a gas stabilizer, you’ll fill your tank almost entirely with fresh, clean unleaded gasoline. Then add a fuel stabilizer. You can use this with old fuel, but it’s best to use it when fresh.

Turn on your lawnmower and let the engine run for a few minutes to get the stabilizer running through your fuel lines and carburetor. Your lawn mower should be ready for storage now.

Do You Put Same Gas as Cars in Lawn Mowers?

Most lawnmowers work with the same gas you put in your car, but be sure to search for your lawnmower model and see what other people recommend online!

Older models of lawnmowers often don’t handle ethanol well.

Today’s gasoline contains up to 10% ethanol, so always check first before filling up at a gas station near you.

To make it easier on our lawnmower, we use automotive 87-octane gasoline with a fuel stabilizer.

Do You Add Oil Separately in Lawn Mower?

When it comes to maintaining your lawnmower, you’ll need to check and replace the oil from time to time.

You should change the oil for all new mowers after the first five hours of use; then, you’ll change it before a new mowing season in spring or summer. This also equates to about 50 hours of use.

Most lawn mowers have a separate oil chamber with an oil plug. You’ll need to check the oil filter to see if it’s filled with oil debris. If so, this should be replaced as well.

Lawn Mower Filters

Did you know that your lawnmower may also have oil and air filters? Depending on your model, you may have multiple filters that need to be checked periodically.

It’s best to replace an oil filter once a year or before heavy-duty lawn mowing in early spring and summer.

Doyle Mathews Lawn Expert

Pro Tip: Mower air filters should also be replaced every three months if consistently mowing each week. For many, you are replacing your air filter once per year before summer is enough. There are also two filter types for specific mower models, including the primary filter and a foam filter.

Most mowers have paper air filters that prevent any large particles from getting into the combustion chamber. You can find these filters located beneath the cover of your lawnmower, but it’s best to check your manual specifications.

TruFuel 4-Cycle Ethanol-Free Fuel – Best fuel for lawnmowers

TruFuel is the world’s cleanest fuel. With a pre-blended mix, TruFuel starts quickly and runs at peak performance. TruFilters keep you running smoothly with no smoke—meaning it’s easy to tell when it’s time to get new filters. Rest assured that this fuel will not void your warranty or reduce equipment life due to fouling from high aromatic content fuels. Made for outdoor power equipment, TruFuel delivers superior performance in all four-cycle engines and helps extend the life of your machinery. You’ll even enjoy easier start-up, increased trigger response, smoother idling, cleaner-burning without smoke!

  • Save on fuel costs
  • Cleaner-burning fuel, so your equipment will last longer
  • Quick start uptime

VP Small Engine Fuels 6208 Ethanol-Free 4-Cycle Fuel

fuel, symptoms, gasoline, lawn

VP Small Engine Fuels are engineered to maintain your fuel system not only for the day but for years ahead. With our new VP Fuel Ethanol Free 4-Cycle Fuel, you won’t have to worry about it attracting moisture or oxidizing and forming gummy deposits in your carburetor. Plus, with a flashpoint of.22 degrees Fahrenheit, this fuel burns cleaner, maintaining maximum performance without jeopardizing engine life!

  • No Ethanol, No Additives.
  • Great for sensitive engines like hand-held lawnmowers and blowers
  • Non-Premium but with all the benefits of Premium Fuel
  • Great for California because there’s no risk of Blended E10 Fuels
  • Leak issues during shipping

STIHL 7010 871 0203 Motomix 50:1 2 Cycle PreMix Fuel

fuel, symptoms, gasoline, lawn

STIHL is the name to trust when it comes to dependable garden implements, and now you can trust them with your prized 2-Cycle engine. Get the best of both worlds with a convenient 50:1 premixed fuel that makes life so much easier! Trust STIHL for everything from auto repairs, home appliances, power tools, lawn equipment, and tractor attachments – as well as this handy little pre-mixed fuel. It’s a no-brainer when it comes to small engine mixers. Make a good investment in your favorite gear by going with nothing but the finest quality like STIHL Premix Fuel Motomix 50:1 available right here.

  • No more mixing gas and oil, just open the can
  • Easy to pour and use for backup fuel
  • Works perfectly with any 2-cycle small engine
  • Reduces downtime because of keeping a peace of mind
  • Overpriced

TruFuel 2-Cycle 40:1 Pre-Blended Fuel

fuel, symptoms, gasoline, lawn

TruFuel is your pre-blended fuel for portable gas-powered equipment; it has been specifically designed to work best with 2-cycle engines and provides consistent performance. Whether you’re using air dampers or throttles to control oil and fuel delivery, TruFuel ensures that there will be no smoke from your engine. With higher quality synthetic oils in the mix that protect against heat build-up and virtually zero aromatics, which lead to better burning, you can be sure you’re getting an excellent product here. The convenient aspect, in particular, is a big highlight – TruFuel saves time by delivering everything perfect for usage without any messy mixing yourself! And those handy benefits all go hand in hand with reducing chemical emissions into our environment!

  • Long-term engine health
  • Ethanol-free fuel that meets international standards
  • 100% synthetic oil that exceeds test requirements for ISO L EGD and API TC
  • Stabilizer to help prevent deposits on the valve seat, cylinderhead and pistons
  • Too expensive for pro lawn service use

Goplus 20 Liter (5 Gallon) Jerry Fuel Can with Flexible Spout

fuel, symptoms, gasoline, lawn

Some might call it a “filler” fuel can, but we prefer to call it peace of mind. This 20 liter (5 gallons) Jerry fuel can from Goplus is perfect for transporting, storing, and dispensing oil- or gas-, based liquids in various environments with its tough steel construction and anti-corrosive coated paint inside and outside that eliminates the risks of rusting! Each can comes with a safety spout that locks onto the tank conveniently on one side to prevent spills–perfect when refueling your vehicle at an off-road destination!

The size and weight of these cans are compact and convenient for easy storage and transport. One Jerrycancano provides you with enough gas for 1 hour of mowing on a lawn – they can act as an emergency fuel supply in your car or home if the unfortunate should happen!

  • 5 gallons
  • Locking Lid Anti-Leak Protection
  • EPA and CARB Approved
  • Prevent leakage with the spill-proof seal, provide a more secure guarantee
  • Lightweight with compact size, easy to carry to any places you want
  • Top-grade material and fine workmanship ensure its good durability and reliability
  • Empty the can in seconds with the unique air breather
  • Spot welded handles indicate that the manufacturer is from China, not the US


How To Remove Gas From A Lawn Mower?

First of all, you need the fuel line disconnected (spark plug on lawnmower should be without fuel pipe). Secondly, take a liquid hand pump. one side should be in the gas tank, another in the gas can, and start pumping. That’s it!

What Fuel Do You Use?

Whatever the manual calls for. Because different manufacturers make their own standards for various engines.

How much gas does a zero-turn mower hold?

The capacity of a zero-turn mower varies by model, but most can hold anywhere from.75 to over one gallon. Many owners purchase two or three gas cans when they buy their mowers toy with enough fuel available for extended projects without refueling constantly.


Fuel is essential to maintaining a long lifespan for your lawnmower. When considering the type of gas that would be best for your mower, keep in mind what kind of engine it has and how much power it needs. Most riding mowers use the same type of gas as cars, but there are some differences when using high ethanol gasoline, so avoid this if possible. You should also monitor oil levels and change filters regularly to optimize performance. What other tips can you think of?

Gas Mowers

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Choosing the Right Gas Mower for Your Yard

When selecting the correct lawn mower that will meet your needs, you should consider your yard size and landscape, clipping disposal options and engine preference. And depending if you want a little workout or none at all, choose from Push Mowers, Self-Propelled Mower models.

How To Handle Grass Clipping

The cutting deck on your gas lawn mower will determine how your grass clippings will be managed. The options include:

Mulching Mowers:Mulching mowers feature a high dome deck that contains clippings as they are cut into fine pieces and redistributed to your lawn, adding helpful nutrients.

Bagging Mowers: Bagging mowers provide your cleanest-looking lawn option. A rear bag collects clippings for disposal or composting. Rear bags, as well as mulching mowers, are most convenient for mowing near fences, trees and other obstacles from either side of the mower.

Side Discharge: disperses clippings across the lawn as you mow. It is most effective with high grass or wet lawn conditions that prevent bagging or mulching.

How to Chose Between Push Mowers and Self-Propelled Mowers

Push Mowers: Best for smaller, flat yards up to 1/4 acre with few obstacles. The operator pushes the mower as the gas engine powers the blade. These simple to-operate mowers are economically-priced.

Ideal for inclines, uneven or hilly terrain and for yards between 1/3 to 1/2 acre. The engine powers both the blade and the wheels. Available in front, rear wheel or all-wheel drive for even greater traction.

Additional Features to Consider when Purchasing a Gas Lawn Mower

Electric Key Start: Starts with a simple turn of an automotive-style ignition key.

Speed Control: Self-propelled models feature variable speeds for adjustment without stopping the mower. You’re able to easily slow down around obstacles and speed up in open areas.

High Wheels: Rear high wheels improve maneuverability and reduce effort on hilly or uneven terrain.

Deck Wash-out Port: Your garden hose connects to the deck port to clean and maintain air flow.

Count on True Value for all your lawn care needs. In addition to our gas lawn mowers, we also carry a line of riding, electric and reel mowers. Troy-Bilt, Husqvarna, Black Decker, and DeWALT to name a few. Get ready to add curb appeal to your home today.

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