The end of summer is here, and your trusty lawn mower has earned a well-deserved rest. But before you tuck it away in the garage, a crucial question arises: should you empty the gas tank? It’s a common dilemma, and the answer isn’t always straightforward. This article delves into the pros and cons of emptying your lawn mower’s gas tank, exploring the potential benefits and risks involved. By the end, you’ll have the knowledge to make an informed decision for your own mower and storage situation.
In short, while emptying your lawn mower’s gas tank is generally recommended for long-term storage, it’s not always necessary for short-term breaks or if you use fuel stabilizers. Let’s examine the factors involved in this decision to understand why.
The Case for Emptying Your Lawn Mower’s Gas Tank
Emptying your lawn mower’s gas tank before storing it offers several potential advantages, making it a popular choice for many homeowners. Here’s why:
Preventing Fuel Degradation:
The Aging Process:
Gasoline, like any organic compound, deteriorates over time. It undergoes a process called “oxidization,” where it reacts with oxygen in the air, causing it to break down into gum and varnish. These deposits can clog fuel lines, carburetors, and other vital engine parts.
The Impact on Performance:
This deterioration can result in a sluggish engine, difficulty starting, or even complete failure. The older the gas, the more likely it is to cause problems.
Reducing Fire Hazards:
The Risk of Spills:
Storing a lawn mower with a full gas tank increases the risk of spills or leaks, especially if the mower is moved or jostled. Gasoline is highly flammable, and a small spill can quickly ignite, creating a dangerous situation.
Accidental Ignition:
Even a small spark, like the static electricity from your clothing, can trigger a fire in a volatile environment like a garage. Emptying the gas tank minimizes the risk of a fire hazard.
Simplifying Maintenance:
A Clean Start:
Emptying the tank before storage allows you to perform a thorough cleaning of your lawn mower. This is particularly important if you use older fuel or if your mower has been sitting for a while. A clean engine runs more efficiently and is less prone to problems.
Avoiding Ethanol Issues:
Modern gasoline often contains ethanol, a biofuel that attracts moisture. This moisture can condense in the fuel system, causing corrosion and other issues. Emptying the tank eliminates this risk.
The Case Against Emptying Your Lawn Mower’s Gas Tank
While emptying your lawn mower’s gas tank offers clear advantages, it’s not always the most convenient or practical option. Here are some factors to consider when making your decision:
Potential Waste and Inconvenience:
Fuel Disposal:
Disposing of gasoline properly can be tricky. It’s usually not a good idea to pour it down the drain or on the ground, as this can contaminate water sources. Most gas stations will accept used gasoline, but you may have to pay a small fee.
Time and Effort:
Emptying your gas tank requires a bit of time and effort, especially if you need to find a place to safely dispose of the fuel.
Fuel Stabilizers as an Alternative:
The Benefits of Fuel Stabilizers:
A good fuel stabilizer can effectively prevent gasoline degradation and protect your lawn mower’s engine during storage. These additives are readily available at most hardware stores and auto parts retailers.
Easy Application:
Simply add the stabilizer to your gas tank and run your mower for a few minutes to distribute it throughout the fuel system. This solution offers a convenient alternative to emptying the tank.
Short-Term Storage:
No Need for Emptying:
If you plan to use your lawn mower again within a few weeks, it’s generally not necessary to empty the gas tank. The risk of fuel degradation is minimal in this timeframe.
Using Fuel Stabilizers:
For short-term storage, it’s still a good idea to use a fuel stabilizer to prevent any potential issues.
Making the Decision: When to Empty and When to Stabilize
Ultimately, the decision of whether to empty your lawn mower’s gas tank or use fuel stabilizer depends on your individual circumstances and storage plans.
- Long-Term Storage: If you plan to store your lawn mower for an extended period (several months or longer), emptying the gas tank is recommended to minimize the risk of fuel degradation and fire hazards.
- Short-Term Storage: If you intend to use your lawn mower again within a few weeks, using a fuel stabilizer is a convenient and effective alternative to emptying the tank.
Always prioritize safety: Ensure you store your lawn mower in a well-ventilated area away from any potential ignition sources, even if you use fuel stabilizers.
Additional Tips for Storing Your Lawn Mower
Here are some extra steps you can take to ensure your lawn mower is properly stored and ready for use next season:
- Clean your mower: Remove any accumulated grass clippings or debris from the mower deck and engine. This will prevent corrosion and other issues.
- Change the oil: Fresh oil protects your engine during storage.
- Sharpen the blades: Sharpened blades ensure a clean cut next season.
- Check the air filter: Replace or clean the air filter to ensure optimal engine performance.
- Cover your mower: Protect it from dust and moisture with a dedicated lawn mower cover.
By following these tips and making an informed decision about your gas tank, you can ensure your lawn mower is properly prepped for a long and healthy life.
FAQ
Q1: Is it really necessary to empty the gas from my lawn mower?
It is not strictly necessary to empty the gas from your lawn mower every time you store it, but it’s highly recommended. Gas goes bad over time, becoming stale and less effective. This stale gas can gum up your carburetor and fuel lines, leading to difficult starts and even engine damage. While modern gas can last for several months, it’s best to avoid prolonged storage with gas in the tank for optimal performance and longevity.
Q2: How long can gas stay in a lawn mower without going bad?
The shelf life of gasoline depends on various factors like storage conditions, fuel stabilizer additives, and gasoline quality. Generally, untreated gasoline can last for 3-6 months, while gasoline with a fuel stabilizer can last for 12 months or even longer. However, it’s advisable to use up the existing gas within 30 days for optimal performance.
Q3: What happens if I leave gas in my lawn mower for a long time?
Leaving gas in your lawn mower for an extended period can lead to several problems. The gasoline can evaporate, leaving behind a sticky residue that clogs the carburetor and fuel lines. This can cause difficulty starting the engine, poor performance, and ultimately engine damage. Additionally, stale gas can attract moisture, promoting corrosion and rust within the fuel system.
Q4: How do I empty the gas from my lawn mower safely?
The safest way to empty the gas is to use a siphon pump. This allows you to transfer the gas from the tank to a separate container without spilling. Always use the siphon pump in a well-ventilated area, away from any open flames or heat sources. You can also drain the gas by tilting the mower and letting it flow out of the tank, but be careful not to spill it.
Q5: What should I do with the gas I remove from my lawn mower?
The gas you remove from your lawn mower can be disposed of in several ways. You can try to use it up in another gas-powered device, like a generator or a weed trimmer. If you can’t use it, consider taking it to a local recycling center or a designated hazardous waste collection site. Do not pour the gas down the drain or into the ground, as it can contaminate the environment.
Q6: How can I prevent gas from going bad in my lawn mower?
To prevent gas from going bad in your lawn mower, consider using a fuel stabilizer. Fuel stabilizers are additives that help to prevent the breakdown of gasoline, extending its shelf life. You can also store your lawn mower in a cool, dry place to minimize the rate of evaporation and moisture absorption.
Q7: Should I add fuel stabilizer to my lawn mower every time I fill it up?
It’s not strictly necessary to add fuel stabilizer every time you fill up your lawn mower, especially if you plan to use the gas within a few weeks. However, adding fuel stabilizer can be beneficial if you’re storing your lawn mower for longer periods or if you live in a humid climate. It will help ensure that the fuel stays fresh and prevents any potential problems from arising due to stale gas.