Spring has sprung, the sun is shining, and your lawn is calling out for a trim. But before you can enjoy the satisfaction of a perfectly manicured yard, you need to tackle the first hurdle: getting your Craftsman M140 lawn mower up and running. This guide will walk you through the simple steps of starting your Craftsman M140, covering everything from basic maintenance to troubleshooting common issues.
The Craftsman M140 is a reliable and popular choice for homeowners, and with a bit of understanding, starting it can be a breeze. We’ll discuss the key steps involved in bringing your mower to life, from prepping the engine to dealing with common starting problems. Let’s get started!
The Basics of Starting a Craftsman M140
Starting a Craftsman M140 lawn mower is a straightforward process that involves a few essential steps:
- Check the Fuel: Ensure your mower has fresh gasoline.
- Prepare the Engine: Prime the engine if necessary, and make sure the choke is in the correct position.
- Start the Engine: Turn the key or pull the starter cord, depending on your model.
Note: These instructions are general. Always refer to your Craftsman M140 owner’s manual for specific instructions and safety precautions.
Preparing Your Mower for Starting
Before you even attempt to start your Craftsman M140, a little preparation can go a long way:
1. Check the Fuel Level
The first step is to ensure your mower has enough fuel. A low fuel level can lead to starting problems and even damage your engine.
- Locate the Fuel Tank: The fuel tank is typically located on the side of the mower deck. It will have a cap that you can unscrew to check the fuel level.
- Check the Level: Use a dipstick or simply look inside the tank to see how much fuel is remaining.
- Refuel (If Needed): If the fuel level is low, add fresh gasoline. Never overfill the tank.
Important Note: Always use a fuel stabilizer in your gasoline, especially if you are storing your mower for an extended period. This helps prevent the fuel from going bad and clogging your carburetor.
2. Inspect the Spark Plug
The spark plug is crucial for igniting the fuel-air mixture in your mower’s engine. A dirty or damaged spark plug can make it difficult or impossible to start the engine.
- Locate the Spark Plug: The spark plug is usually located on the top of the engine, covered by a spark plug boot.
- Remove the Boot: Carefully pull off the spark plug boot.
- Check the Spark Plug: Examine the spark plug for any signs of wear, corrosion, or dirt. A clean, properly gapped spark plug is essential for optimal performance.
- Clean or Replace (If Necessary): If the spark plug is dirty, use a wire brush to clean it. If it’s worn or damaged, replace it with a new one.
- Reconnect the Boot: Carefully reattach the spark plug boot.
Tip: You can test the spark plug by holding it near a grounded metal object while someone pulls the starter cord. If there is a spark, the plug is functioning.
3. Verify the Air Filter
A dirty air filter restricts airflow to the engine, making it difficult to start and reducing performance.
- Locate the Air Filter: The air filter is typically located under a cover on the side of the engine.
- Remove the Cover: Open the cover and remove the air filter.
- Inspect the Filter: Check the filter for dirt, dust, and debris.
- Clean or Replace (If Necessary): If the filter is dirty, you can try cleaning it with compressed air or soap and water. If it’s heavily soiled or damaged, replace it with a new one.
- Reinstall the Filter: Carefully reinstall the air filter and close the cover.
Tip: It’s a good idea to clean or replace your air filter every 25 hours of operation or more frequently if you mow in dusty conditions.
Starting the Craftsman M140 Engine
Now that your mower is prepped, let’s start the engine!
1. Set the Choke
The choke restricts airflow to the engine, helping it start in cold conditions.
- Locate the Choke: The choke is usually a lever or button located on the engine.
- Set the Choke: If the engine is cold, position the choke to the “choke” or “on” position. If the engine is warm, the choke can be in the “off” or “run” position.
Tip: Refer to your owner’s manual for specific choke instructions for your Craftsman M140 model.
2. Prime the Engine (If Needed)
Some Craftsman M140 models have a primer bulb.
- Locate the Primer Bulb: The primer bulb is typically located near the carburetor.
- Prime the Engine: If the engine is cold, press the primer bulb several times to fill the carburetor with fuel.
Note: If your model doesn’t have a primer bulb, skip this step.
3. Start the Engine
Now you’re ready to start the engine.
- Manual Start: If your Craftsman M140 has a pull cord, grasp the cord firmly and pull it sharply.
- Electric Start: If your mower has an electric starter, turn the key to the “start” position.
Important Note: When starting the engine, always make sure the mower is on a level surface and the blades are disengaged.
Troubleshooting Common Starting Problems
Even with proper preparation, you might encounter some difficulties starting your Craftsman M140. Here’s how to troubleshoot common issues:
1. The Engine Won’t Turn Over
- Check the Fuel Line: Make sure the fuel line is connected to the carburetor and is not kinked or blocked.
- Check the Spark Plug Wire: Verify that the spark plug wire is securely connected to the spark plug.
- Check the Battery (If Applicable): If your mower has an electric start, make sure the battery is charged.
2. The Engine Starts But Dies Immediately
- Check the Choke: Ensure the choke is in the correct position for a cold or warm engine.
- Check the Air Filter: Make sure the air filter is clean and not obstructing airflow.
- Check the Fuel Line: Make sure the fuel line is not clogged.
3. The Engine Starts But Runs Roughly
- Check the Spark Plug: Make sure the spark plug is clean and gapped correctly.
- Check the Air Filter: A dirty air filter can cause rough running.
- Check the Carburetor: A dirty or malfunctioning carburetor can cause engine problems.
Important Note: If you suspect a carburetor problem, it’s best to consult your owner’s manual or contact a qualified mechanic for assistance.
Keeping Your Craftsman M140 Running Smoothly
Once you’ve successfully started your Craftsman M140, here are a few tips to keep it running smoothly:
- Regular Maintenance: Performing routine maintenance like checking the oil level, cleaning the air filter, and inspecting the spark plug can help prevent major problems and extend the life of your mower.
- Proper Storage: When storing your Craftsman M140 for the off-season, empty the fuel tank, clean the engine, and store the mower in a dry, well-ventilated place.
Tip: Always refer to your Craftsman M140 owner’s manual for detailed maintenance instructions.
Conclusion: Ready to Mow!
Starting a Craftsman M140 lawn mower is a straightforward process with a little preparation and understanding. By following these steps, you can get your mower up and running in no time, ready to tackle your lawn with confidence. Remember, regular maintenance is key to keeping your mower performing at its best.
Now, go out there and enjoy a perfectly manicured lawn!
FAQs
Q1: What type of fuel does the Craftsman M140 lawn mower use?
The Craftsman M140 lawn mower uses regular unleaded gasoline. It’s important to use the correct type of fuel, as using the wrong fuel can damage the engine. Make sure to use fresh fuel, as old fuel can gum up the engine and make it difficult to start.
You should also add a fuel stabilizer to your gas tank to prevent the fuel from going bad over time. This is especially important if you don’t use the lawn mower often.
Q2: How much oil does the Craftsman M140 lawn mower need?
The Craftsman M140 lawn mower requires a specific amount of oil, which is typically indicated on the dipstick or in the owner’s manual. Check the dipstick to see how much oil is already in the engine and add more as needed.
Always use the correct type of oil for your lawn mower. Refer to the owner’s manual for the recommended type of oil. Overfilling the engine with oil can cause damage, so make sure to only add the recommended amount.
Q3: How do I change the oil in my Craftsman M140 lawn mower?
Changing the oil in your Craftsman M140 lawn mower is an essential maintenance task. You should change the oil every 25 hours of use or at least once a year, whichever comes first.
To change the oil, you will need to warm up the engine for a few minutes. Then, locate the oil drain plug and place a drain pan underneath. Remove the oil drain plug and let the oil drain completely. Once the oil has drained, replace the drain plug and add fresh oil to the engine.
Q4: How do I clean the air filter on my Craftsman M140 lawn mower?
The air filter in your Craftsman M140 lawn mower is responsible for keeping dirt and debris out of the engine. A dirty air filter can reduce engine performance and make it difficult to start.
To clean the air filter, remove it from the lawn mower and tap it against a hard surface to remove any loose dirt. If the air filter is very dirty, you can wash it with soap and water. Let the air filter dry completely before reinstalling it.
Q5: How do I adjust the cutting height on my Craftsman M140 lawn mower?
The cutting height on your Craftsman M140 lawn mower can be adjusted to suit your needs. The adjustment mechanism will vary depending on the model, but it is typically located on the sides of the mower deck.
To adjust the cutting height, simply raise or lower the lever or knobs to the desired height setting. Make sure all four wheels are at the same height to ensure a consistent cut.
Q6: How do I sharpen the blades on my Craftsman M140 lawn mower?
Dull blades can tear your grass instead of cutting it cleanly. It is recommended to sharpen the blades at least once a year or more frequently if they are dull.
To sharpen the blades, you will need to remove them from the mower deck. Use a file or sharpening stone to sharpen the edges of the blades. Be careful not to remove too much metal, as this can damage the blades.
Q7: Where can I find parts for my Craftsman M140 lawn mower?
There are various sources for finding parts for your Craftsman M140 lawn mower. You can visit your local hardware store or home improvement center. You can also search online for parts retailers that specialize in Craftsman lawn mower parts.
The owner’s manual for your lawn mower may also provide information on where to find parts. If you are unsure about which parts you need, you can contact Craftsman customer service for assistance.