The crisp scent of freshly cut grass, the gentle hum of the engine, and the satisfying feeling of a job well done – these are the joys of lawn mowing. But what happens when that satisfying hum turns into a sputtering cough, and your lawn mower refuses to start? Sometimes, the answer lies in a little boost of starting fluid, but knowing where to apply it can be crucial. This article will guide you through the process of using starting fluid safely and effectively, explaining where to apply it, the different types of starting fluid, and important safety considerations.
Short Overview: Starting fluid, also known as ether, is a highly flammable liquid used to help cold engines ignite. It’s typically used in small engines like those found in lawn mowers, but it’s essential to use it correctly and with caution.
Understanding Starting Fluid and Its Uses
Starting fluid is primarily used to aid in the combustion process in engines that are struggling to start, especially when cold. It’s a volatile liquid that ignites easily, providing a quick burst of energy to help the engine fire up. It’s most commonly used in:
- Small engines: Lawn mowers, snowblowers, generators, and other small gasoline-powered equipment.
- Engines that haven’t been used recently: When an engine sits unused for an extended period, fuel can evaporate, leaving behind a difficult-to-ignite mixture.
Why Does a Lawn Mower Need Starting Fluid?
There are a few reasons why your lawn mower might require starting fluid:
- Cold weather: In cold temperatures, the fuel in your lawn mower can thicken, making it difficult for the engine to ignite. Starting fluid helps to create a more volatile mixture.
- Old or stale fuel: Fuel that has been sitting in the tank for a long time can degrade, becoming less efficient in combustion. Starting fluid can jumpstart the engine.
- Carburetor issues: If your carburetor is clogged or not functioning properly, the fuel-air mixture might be too lean, making it difficult to start. Starting fluid can provide a temporary fix.
Where to Put Starting Fluid in a Lawn Mower
The most common type of starting fluid is ether-based. This type of starting fluid is highly flammable and should be handled with extreme caution. Here’s how to use it properly:
Step 1: Locate the Air Intake
Most lawn mowers have a rectangular or round air intake located near the carburetor. It’s usually made of metal or plastic and has a small opening where air enters the engine.
Important Note: If your lawn mower has a choke, it’s generally not recommended to use starting fluid while the choke is engaged. The choke restricts air flow, making the engine run rich, and using starting fluid could lead to flooding the engine.
Step 2: Apply a Small Amount
Do not overspray! Starting fluid is highly volatile and a small amount goes a long way.
- Hold the can upright: Aim the nozzle directly into the air intake.
- Give a quick burst: A short spray of about half a second is usually enough.
- Avoid spraying near the spark plug: Starting fluid is highly flammable, and any direct contact with the spark plug can lead to a dangerous fire.
Step 3: Attempt to Start the Engine
After applying the starting fluid, quickly turn the ignition key and attempt to start the engine. Do not hold the key down for extended periods. If the engine starts, immediately release the key.
What if the Engine Doesn’t Start?
If your lawn mower still doesn’t start, there are a few things to consider:
- Fuel problem: If you haven’t used the lawn mower in a long time, the fuel might be stale or contaminated. You may need to drain the fuel tank and add fresh gasoline.
- Carburetor issue: A clogged or malfunctioning carburetor can prevent the engine from starting. You might need to clean or adjust the carburetor.
- Spark plug issue: A fouled or worn spark plug can prevent a spark, making it impossible to start the engine.
Safety Precautions When Using Starting Fluid
Starting fluid is highly flammable and must be handled with extreme caution. Here are some important safety guidelines to follow:
1. Keep Away from Open Flames and Heat Sources:
- Always use starting fluid in a well-ventilated area, far away from any potential heat sources or open flames.
- Never use starting fluid near a fire, grill, or other heat sources.
- Keep starting fluid away from direct sunlight or hot surfaces.
2. Use in Short Bursts:
- Do not hold the starting fluid nozzle down for extended periods.
- A short burst of half a second is usually sufficient.
3. Avoid Overspray:
- Overspraying can result in excessive fuel in the engine, leading to a dangerous fire.
- Use the starting fluid sparingly and only as needed.
4. Wear Protective Gear:
- Starting fluid can irritate the skin and eyes.
- Always wear safety glasses and gloves when using starting fluid.
5. Store Properly:
- Store starting fluid in a cool, dry, and well-ventilated location.
- Keep starting fluid away from children and pets.
- Never store starting fluid in a hot car or other enclosed spaces.
6. Know the Symptoms of Ether Poisoning:
- Ether poisoning can cause dizziness, nausea, headaches, and even loss of consciousness.
- If you experience any of these symptoms, get fresh air immediately and seek medical attention.
Different Types of Starting Fluid
While ether-based starting fluid is the most common, there are other options available:
- Diethyl ether: This is the most common type of starting fluid, known for its volatility and quick-acting properties. It’s highly flammable and should be handled with extreme caution.
- Petroleum-based starting fluid: This type of starting fluid is less volatile than ether-based options and often contains additives to protect the engine. However, it might not be as effective in extreme cold weather.
- Starting fluid with lubricants: Some starting fluids contain lubricants to help protect the engine from wear and tear.
When to Seek Professional Help
Using starting fluid occasionally can help get a stubborn engine running, but it shouldn’t be used as a permanent solution. If you find yourself using starting fluid frequently, it’s a sign that there might be a more significant problem with your lawn mower.
Here are a few signs that it’s time to call a professional:
- Your lawn mower won’t start even with starting fluid. This could indicate a more serious issue with the engine, like a clogged carburetor or a faulty spark plug.
- Your lawn mower runs poorly even after using starting fluid. This might be a sign of a fuel problem, a carburetor issue, or a problem with the engine’s air intake.
- You experience repeated problems with your lawn mower. Instead of repeatedly relying on starting fluid, it’s best to address the underlying issue.
Conclusion
Using starting fluid can be a quick fix for a stubborn lawn mower, but it’s essential to use it safely and correctly. Remember to apply it to the air intake in short bursts, avoiding overspray and keeping it away from any heat sources. Always prioritize safety and seek professional help if you suspect a more significant problem with your lawn mower. By understanding the proper use of starting fluid and addressing underlying issues, you can keep your lawn mower running smoothly and enjoy those satisfying moments of a freshly cut lawn.
FAQs
Where should I put starting fluid in a lawn mower?
Starting fluid should be sprayed directly into the carburetor throat of your lawnmower. The carburetor throat is the opening where air enters the engine. You can usually find it by following the air filter hose.
Be careful not to spray directly into the air filter as this can damage the engine. Always use a short burst of starting fluid, as too much can cause the engine to run too hot or even catch fire.
How often should I use starting fluid?
Starting fluid should only be used as a last resort when a lawnmower won’t start. Using it too frequently can damage the engine, and it’s not a long-term solution.
It’s best to identify the underlying problem preventing your mower from starting and address it properly. This might involve cleaning the carburetor, replacing spark plugs, or checking the fuel system.
Is starting fluid harmful to my lawn mower?
Starting fluid is highly flammable and can be harmful to your lawn mower if used improperly. Excessive use of starting fluid can damage the engine, including the spark plugs, carburetor, and piston rings.
It can also lead to increased emissions and fuel consumption. If you find yourself using starting fluid frequently, it’s a sign that your lawn mower has a bigger problem that needs addressing.
What type of starting fluid should I use?
Use a starting fluid specifically designed for gasoline engines. Avoid using starting fluid intended for diesel engines, as it can damage your lawnmower.
It’s also essential to choose a starting fluid with a low ether content, as high ether concentrations can harm your engine. Look for products labeled as “low-ether” or “safe for small engines.”
How do I know if my lawnmower needs starting fluid?
If your lawn mower is difficult to start, even after several attempts, and you can’t seem to find the problem, you may consider using starting fluid as a last resort.
However, remember that using starting fluid is a temporary solution. It is not a replacement for proper engine maintenance and troubleshooting.
What should I do if my lawn mower won’t start after using starting fluid?
If your lawn mower still won’t start after using starting fluid, it’s likely that there is a more significant problem with the engine. You should avoid using starting fluid again and try to identify the cause of the problem.
Possible causes include a faulty spark plug, a clogged air filter, or a problem with the fuel system. You can consult a repair manual or a qualified technician for assistance.
Can I use starting fluid in any lawnmower?
Using starting fluid in your lawnmower depends on its type and age. Generally, it’s okay to use starting fluid in older mowers with carburetors.
However, newer lawn mowers with fuel injection systems are more sensitive to starting fluid. Using it in these models can damage the engine and should be avoided.