The warm weather is finally here, and your lawn is starting to grow. You pull out your trusty Craftsman M140 lawn mower, ready to tackle the green wilderness, only to find it won’t start. Frustrating, right? But don’t despair! This article will guide you through the process of starting your Craftsman M140 lawn mower, providing step-by-step instructions and troubleshooting tips to get you back to mowing in no time. We’ll cover everything from checking the basics like fuel and spark plugs to diagnosing more complex issues, so you can confidently handle any starting problem your M140 might throw your way.
A Quick Overview
Starting a Craftsman M140 lawn mower, or any gas-powered mower for that matter, usually involves a straightforward process:
- Prepare the Mower: Ensure the mower is on a level surface, the fuel tank is topped up, and the blade is free of debris.
- Engage the Choke: This restricts air flow to the engine, helping it start more easily.
- Prime the Engine: This adds a small amount of fuel to the carburetor, assisting with ignition.
- Start the Engine: Pull the starter cord with a swift, firm motion.
- Disengage the Choke: Once the engine is running, gradually disengage the choke to allow the engine to run smoothly.
Let’s delve deeper into each step, providing essential details and troubleshooting tips.
Preparing Your M140 for Starting
1. Check the Fuel Level
The first step in starting your Craftsman M140 is to ensure there’s enough fuel. An empty tank is an obvious reason for a non-starting mower.
- Locate the fuel tank: It’s usually located on the side of the mower, near the engine.
- Check the fuel gauge: Most Craftsman M140 mowers have a fuel gauge to indicate the fuel level.
- Refuel if needed: If the tank is low, use fresh, high-quality gasoline.
- Avoid mixing fuel: Never mix gasoline with oil. This can damage the engine.
2. Inspect the Blade and Mower Deck
A clogged blade or debris buildup in the mower deck can hinder performance and make starting difficult.
- Remove any debris: Use a brush or cloth to clean the blade and the underside of the mower deck.
- Check the blade for damage: Inspect the blade for any bends or cracks. A damaged blade should be replaced immediately.
- Ensure the blade is properly installed: Make sure the blade is securely fastened to the engine shaft.
3. Position the Mower on a Level Surface
A stable platform is crucial for starting your Craftsman M140.
- Find a flat area: Avoid starting the mower on a slope or uneven ground.
- Ensure the wheels are in contact with the ground: The mower should be sitting securely and not wobbling.
Starting the M140 Engine
1. Engage the Choke
The choke restricts airflow to the engine, enriching the fuel mixture for easier starting.
- Locate the choke lever: It’s typically found on the side of the engine, usually with a red or orange handle.
- Engage the choke fully: Move the choke lever to the “choke” or “on” position.
2. Prime the Engine
Priming introduces a small amount of fuel into the carburetor, aiding in the starting process.
- Locate the primer bulb: It’s usually a red rubber bulb located near the carburetor.
- Prime the engine by pressing the bulb: Pump the primer bulb 3-5 times, adding fuel to the carburetor.
3. Pull the Starter Cord
Now it’s time to bring the engine to life!
- Locate the starter cord: It’s a thick rope attached to the engine.
- Hold the cord handle firmly: Wrap your hand around the handle and pull it steadily.
- Pull the cord with a swift, firm motion: Avoid jerking the cord, as this can damage the engine.
4. Disengage the Choke Gradually
Once the engine starts, you’ll need to gradually disengage the choke.
- Listen to the engine: As the engine starts to run, it will likely sputter or sound rough.
- Slowly move the choke lever: Gradually move the choke lever back to the “off” position.
- Monitor the engine: Continue to adjust the choke lever until the engine runs smoothly.
Troubleshooting Starting Issues
1. Engine Doesn’t Start at All
If the engine won’t even attempt to start, there are a few things to check.
- Ensure the fuel line is not clogged: Inspect the fuel line for any kinks or blockages.
- Replace the spark plug: A worn-out or fouled spark plug can prevent the engine from starting.
- Check the air filter: A clogged air filter can restrict airflow and hinder starting.
- Inspect the carburetor: The carburetor may need cleaning or adjusting if it’s not delivering fuel properly.
2. Engine Starts but Dies Immediately
If the engine starts but dies almost instantly, here are some possible causes.
- Choke is not fully engaged: Ensure the choke lever is in the “choke” position when starting.
- Engine is flooded: If you’ve primed the engine too much, it may be flooded with fuel. Allow it to sit for a few minutes before trying to start again.
- Spark plug is faulty: A failing spark plug can cause the engine to run intermittently.
3. Engine Runs Rough or Stalls
A rough-running engine could be a sign of several issues.
- Choke is not fully disengaged: Ensure the choke lever is fully “off” once the engine is running.
- Fuel is old or stale: Old gasoline can cause the engine to run poorly. Use fresh, high-quality fuel.
- Air filter is dirty: A clogged air filter can restrict airflow and cause the engine to run poorly.
- Carburetor needs cleaning or adjustment: The carburetor may need cleaning or adjustment if it’s not delivering fuel properly.
Safety Tips When Starting Your M140
Always prioritize safety when working with your Craftsman M140 lawn mower.
- Wear appropriate clothing: Avoid wearing loose clothing that could get caught in the mower’s moving parts.
- Use safety glasses: Protect your eyes from debris and flying objects.
- Keep children and pets away: Never allow children or pets near the running mower.
- Never start the mower inside: Starting the mower in an enclosed space can create dangerous carbon monoxide fumes.
Conclusion
Starting your Craftsman M140 lawn mower should be a straightforward process, but even the simplest machines can sometimes throw a wrench in the works. Remember to follow the steps outlined in this article, and don’t be afraid to troubleshoot any issues you encounter. With a little patience and attention to detail, you’ll have your Craftsman M140 running smoothly in no time, ready to tackle your lawn with ease. Now get out there and enjoy the summer sunshine!
FAQ
1. What are the basic steps to starting a Craftsman M140 lawn mower?
Starting a Craftsman M140 lawn mower is a simple process. First, ensure the fuel tank has enough fuel. Then, make sure the choke lever is in the “choke” position, and the engine switch is turned to the “on” position. Next, prime the engine by pressing the primer bulb several times until you see fuel flowing in the carburetor. Now, pull the starter cord slowly until you feel resistance, then pull it quickly and firmly to start the engine. Once the engine is running, gradually move the choke lever to the “run” position.
If the engine doesn’t start, check the fuel line for any blockages and ensure the spark plug is clean and has a good connection. Finally, let the engine warm up before using the mower.
2. What should I do if my Craftsman M140 lawn mower won’t start?
There are a few reasons why your Craftsman M140 might not start. First, check the fuel tank to ensure it has enough fuel. You can also check the fuel line for any kinks or blockages. Additionally, ensure the spark plug is clean and has a good connection. If the spark plug is fouled, you can clean it with a wire brush or replace it with a new one. If the engine still won’t start, it might be an issue with the ignition system. You may need to check the spark plug wire, the ignition coil, or the starter.
If you have checked all these components and the engine still won’t start, you may need to consult a professional mechanic.
3. How do I change the oil on my Craftsman M140 lawn mower?
Changing the oil in your Craftsman M140 lawn mower is a regular maintenance task that helps ensure its smooth operation. To do this, first, allow the engine to cool down completely. Then, place a drain pan beneath the engine and unscrew the oil drain plug. Let the oil drain completely into the pan. Now, replace the drain plug and tighten it securely. Next, remove the oil fill cap and pour in the recommended amount of new oil. Ensure you use the correct oil type specified in your owner’s manual. Finally, replace the oil fill cap and start the engine for a few minutes to ensure the oil circulates properly.
By changing the oil regularly, you help prevent engine wear and tear and extend the life of your lawn mower.
4. What are some tips for using my Craftsman M140 lawn mower safely?
Using your Craftsman M140 lawn mower safely is crucial. Always wear safety glasses and sturdy footwear when operating the mower. Additionally, make sure the area is clear of debris and obstructions. It’s also important to avoid operating the mower on steep slopes to prevent accidents. Be sure to read and understand the safety instructions in your owner’s manual before using the mower.
Regularly inspect the mower for any damage or wear and tear and ensure the blades are sharp and balanced. Finally, always shut off the engine and disconnect the spark plug wire before performing any maintenance on the mower.
5. How do I adjust the cutting height on my Craftsman M140 lawn mower?
Adjusting the cutting height on your Craftsman M140 is a simple process. Most Craftsman M140 models have a lever or lever system located near the wheels. To raise or lower the cutting height, simply move the lever to the desired position. The cutting height should be marked on the lever or on the mower’s frame.
It’s important to note that adjusting the cutting height should only be done with the engine off. Additionally, ensure the mower is on a level surface before adjusting the cutting height.
6. How often should I service my Craftsman M140 lawn mower?
Regular servicing is vital for keeping your Craftsman M140 lawn mower running smoothly and extending its lifespan. You should service the mower at least once a year before the start of the mowing season. This includes changing the oil, checking and cleaning the air filter, replacing the spark plug, and sharpening or replacing the mower blades.
You should also inspect the belts, fuel lines, and other components for any signs of wear and tear. If you find any issues, it’s best to consult a qualified mechanic for repair or replacement.
7. Where can I find a user manual for my Craftsman M140 lawn mower?
Finding a user manual for your Craftsman M140 lawn mower is essential for understanding its operation, maintenance, and safety procedures. You can try looking for the manual online through the Craftsman website or by searching on general search engines.
Another option is to check with your local Craftsman retailer or a lawn mower repair shop. They may have copies of the manual available, or they can help you locate one. You can also check the user manual that came with the mower. If you can’t find the user manual, you can also contact Craftsman customer support directly for assistance.