Spring is in the air, and that means it’s time to fire up the lawn mower! But what if you’ve been storing your trusty machine all winter and it’s full of old, stale gas? Starting your mower with old fuel can lead to problems, from poor performance to engine damage. That’s why it’s crucial to know how to properly clean out old gas from your lawn mower before you start the season.
This comprehensive guide will walk you through the process step-by-step, covering everything from understanding why you need to remove old gas to the best methods for draining and replacing it. We’ll also explore important safety tips and provide helpful advice on how to prevent future gas problems. So, let’s get started!
Why You Need to Clean Out Old Gas
Gasoline deteriorates over time, becoming less volatile and losing its ability to combust effectively. This is due to a process called oxidation, which causes the fuel to break down and form harmful deposits. These deposits can gum up your mower’s fuel system, leading to issues like:
- Difficult starting: Old gas may not ignite easily, making your mower hard to start.
- Poor performance: The engine may sputter, lose power, or run unevenly.
- Engine damage: Deposits in the carburetor and fuel lines can clog fuel injectors and damage engine parts.
Therefore, it’s important to remove old gas from your lawn mower before starting it up each spring.
How to Drain Old Gas from Your Lawn Mower
The process of draining old gas from your lawn mower is relatively simple and can be completed in a few steps. Here’s a comprehensive guide:
Step 1: Prepare Your Workspace
- Safety First: Always wear safety glasses and gloves when handling gasoline.
- Locate a Suitable Spot: Choose a well-ventilated area outdoors, away from any ignition sources like flames or sparks.
- Gather Supplies: You’ll need a gas can, a funnel, and rags or absorbent materials to clean up any spills.
Step 2: Drain the Gas Tank
- Cool Down the Engine: If you recently used your mower, allow it to cool completely before proceeding.
- Find the Gas Cap: Locate the gas cap on your mower’s tank and remove it.
- Position the Fuel Can: Place your gas can under the mower’s tank.
- Open the Drain Valve: If your mower has a drain valve (usually located near the bottom of the tank), open it to drain the gas into the can.
- If No Drain Valve: If your mower doesn’t have a drain valve, you can tilt the mower slightly and pour the fuel out into the can. Be cautious to avoid spilling fuel.
Step 3: Clean the Carburetor
- Remove the Gas Line: Disconnect the fuel line from the carburetor.
- Clean the Carburetor: Using a carburetor cleaner, spray the carburetor thoroughly to remove any built-up debris or deposits.
- Reassemble: Once clean, reattach the gas line and ensure a secure connection.
Step 4: Refill with Fresh Gas
- Add Fresh Fuel: Fill the gas tank with fresh, high-octane gasoline.
- Prime the Engine: If your mower has a primer bulb, pump it a few times to introduce fuel into the carburetor.
Step 5: Start Your Mower
- Start the Engine: With fresh gas in the tank, try starting your lawn mower.
- Monitor Performance: Listen for any unusual sounds or performance issues. If you notice any problems, consult your owner’s manual or a qualified mechanic.
Preventing Old Gas Problems
Once you’ve drained and refilled your lawn mower with fresh gas, you can take some preventative steps to avoid issues in the future:
1. Use Fuel Stabilizer
Adding fuel stabilizer to your gas tank helps prevent oxidation and extends the shelf life of gasoline.
How to Use Fuel Stabilizer:
- Choose a High-Quality Stabilizer: Look for a stabilizer specifically designed for gasoline engines.
- Follow Instructions: Carefully read and follow the manufacturer’s instructions for proper dosage.
- Mix Thoroughly: Shake or stir the gas tank to ensure the stabilizer mixes completely with the gasoline.
2. Store Your Mower Properly
Proper storage is essential for keeping your lawn mower in good condition.
Storage Tips:
- Empty the Gas Tank: If your mower will be stored for a prolonged period, empty the gas tank completely.
- Run the Engine Dry: Before storage, run the mower for a few minutes to use up any remaining gas in the carburetor.
- Store in a Dry Place: Store your mower in a dry, well-ventilated area.
3. Regularly Check Fuel Lines
Periodically inspect your fuel lines for signs of cracking, leaks, or blockage. Replace any damaged fuel lines as needed.
4. Clean the Carburetor Annually
Even with fuel stabilizer, it’s a good practice to clean your carburetor at least once a year to remove any accumulated debris or deposits.
Conclusion
Cleaning out old gas from your lawn mower is a simple yet essential maintenance task that will help ensure your machine runs smoothly and efficiently. By following the steps outlined in this guide and implementing preventative measures, you can avoid future gas-related problems and keep your lawn mower in top shape for years to come.
Remember, safety is paramount when working with gasoline, so always take necessary precautions and consult your owner’s manual for specific instructions for your model. Now, go forth and enjoy a hassle-free mowing season!
Frequently Asked Questions
What are the dangers of leaving old gas in a lawn mower?
Leaving old gas in your lawn mower can lead to a variety of problems. The most significant issue is the formation of varnish and gum. These substances can clog the fuel lines, carburetor, and other vital parts of the engine, making it difficult or impossible to start the mower. Additionally, old gas can become acidic, corroding the internal components of the engine. This can damage your mower and lead to costly repairs.
Finally, old gas is also a fire hazard. It can ignite easily and is more likely to explode than fresh gas. By emptying and cleaning your mower’s fuel system regularly, you can prevent these issues and ensure your mower runs smoothly and safely.
How often should I change the gas in my lawn mower?
While most manufacturers recommend changing your lawnmower gas every 30 days, it’s best to check the condition of your gas before every use. If you see signs of sediment or the gas has a strong odor, it’s time for a change. Gas degrades over time, even if it’s stored in a sealed container.
The best practice is to use the gas you’ve stored in your mower as soon as possible to reduce the risk of it going bad. If you don’t use your mower frequently, you can always add a fuel stabilizer to the gas to extend its life.
What should I do if I have a lot of old gas?
If you have a large amount of old gas, it’s not recommended to dump it down the drain or into the ground as this can cause environmental damage. Instead, take it to a local recycling center or hazardous waste disposal facility. Many gas stations and automotive parts stores also offer gas disposal services.
You can also use the old gas to run a generator or other small engines, but be aware that it might not perform as well as fresh gas. You might want to consider blending it with fresh gas, or using it for tasks that don’t require maximum engine performance.
What is the best way to remove old gas from my lawn mower?
The best way to remove old gas from your lawn mower is to first disconnect the spark plug wire to prevent accidental ignition. Next, you’ll want to tilt the mower on its side, carefully draining the gas tank into a suitable container. You can use a siphon pump or a small container to help with the process.
Be sure to wear appropriate safety gear, such as gloves and eye protection, during this process. Once the tank is drained, you can clean the fuel tank and lines using a gas line cleaner or a clean cloth.
How can I prevent old gas from forming in my lawn mower?
To prevent old gas from forming in your lawn mower, it’s crucial to use fresh fuel and store it properly. Always use a fuel stabilizer when storing gas for extended periods. This helps to prevent the formation of varnish and gum, and can extend the life of your gas up to 6 months.
Additionally, it’s good practice to run your lawnmower for a few minutes after each use to ensure that the carburetor remains clean. This will help prevent the buildup of fuel residue that can lead to engine problems.
What if my lawn mower won’t start after cleaning out the old gas?
If your lawn mower still won’t start after cleaning out the old gas, there are a few things you can try. First, check the spark plug to ensure it is clean and functioning properly. You can also try cleaning the carburetor to remove any remaining residue.
If these steps don’t solve the problem, you may need to have your lawn mower serviced by a qualified technician. They can diagnose any underlying issues and ensure your lawn mower is running efficiently.
Can I use the old gas for anything else?
While it’s not recommended to use old gas in your lawn mower, you can use it for other purposes. You can use it in a gas-powered generator, pressure washer, or other small engines.
However, keep in mind that old gas may not perform as well as fresh gas, so it might not be ideal for tasks that require maximum engine performance. You can try blending it with fresh gas to improve its performance.