The warm weather has finally arrived, and you’re ready to tackle your overgrown lawn. You pull out your trusty Craftsman mower, eager to get to work, but when you turn the key, nothing happens. Frustration mounts as the engine remains stubbornly silent. Why won’t your Craftsman lawn mower turn over? This article will guide you through the common culprits and offer solutions to get your mower back in action.
In short, a Craftsman lawn mower that won’t turn over is likely suffering from a problem with the ignition system, fuel supply, or the engine itself. You’ll need to methodically check each of these areas to identify the root of the issue.
Check the Basics: Battery, Fuel, and Spark Plugs
Before diving into more complex troubleshooting, ensure the fundamentals are in order.
Battery Check
- Is the battery charged? A dead battery is a common reason for a lawnmower failing to start. If the battery is old or has been sitting unused for a long time, it may need a charge. Use a multimeter to check the battery voltage, or simply try jump-starting it with a good battery from another vehicle.
- Are the battery terminals clean and secure? Corrosion or loose connections can prevent the battery from providing power to the starter. Clean the terminals with a wire brush and ensure they are securely attached.
Fuel Supply
- Is there enough fuel in the tank? Sounds obvious, but it’s easy to overlook a simple empty tank!
- Is the fuel fresh? Old gasoline can gum up the carburetor and prevent the engine from starting. If you haven’t used the mower in a while, consider draining the old fuel and replacing it with fresh gasoline.
- Is the fuel line open? A clogged fuel line can prevent fuel from reaching the carburetor. Check for any kinks or blockages in the fuel line.
Spark Plug Inspection
- Is the spark plug in good condition? A fouled or worn-out spark plug can prevent the engine from igniting. Check the spark plug for wear, deposits, or any signs of damage. Replace it if necessary with a new spark plug that matches the specifications for your Craftsman mower.
- Is there a spark? To test the spark plug, remove it and ground it to the engine block. Then, turn the engine over and observe if there is a spark. If not, the spark plug may be faulty or there could be an issue with the ignition system.
Delving Deeper: Ignition System and Engine Issues
If the basics are checked and you’re still struggling, it’s time to delve into the ignition system and potential engine problems.
Ignition System Troubleshoot
- **Ignition Switch: ** A faulty ignition switch can prevent the engine from receiving power. Check the switch for continuity with a multimeter. If it’s not working properly, you’ll need to replace it.
- Ignition Coil: The ignition coil provides the spark to ignite the fuel-air mixture. A faulty coil can prevent the engine from starting. Test the coil’s resistance with a multimeter, and replace it if it’s not within the specified range.
- **Wiring: ** Loose or damaged wiring in the ignition system can disrupt the flow of electricity and cause starting problems. Inspect the wiring for any breaks, corrosion, or loose connections.
- Safety Interlock Switches: Many lawn mowers have safety switches that prevent the engine from starting unless all safety conditions are met. For example, a blade engagement switch prevents starting if the blades are not disengaged. Ensure these switches are functioning correctly and haven’t become stuck or damaged.
Engine Troubleshoot
- Starter Motor: The starter motor is responsible for turning the engine over. If it’s faulty, the engine won’t crank. Check the starter motor for signs of wear, damage, or corrosion. You may need to replace it if it’s not working properly.
- Compression: Low engine compression can prevent the engine from starting. This can be caused by worn piston rings, valve problems, or other mechanical issues. You’ll need to use a compression tester to measure engine compression. If it’s below the manufacturer’s specifications, you’ll need to address the underlying mechanical problems.
- Carburetor Issues: A clogged or faulty carburetor can prevent fuel from reaching the engine. Clean the carburetor with carburetor cleaner and a small brush. If you suspect a more serious issue, you may need to rebuild the carburetor or replace it entirely.
Beyond the Basics: Seeking Professional Assistance
If you’ve exhausted all the basic and intermediate troubleshooting steps and your Craftsman lawn mower still refuses to turn over, it’s time to consider seeking professional assistance. A qualified mechanic can diagnose and fix more complex problems, such as:
- Electrical Issues: Faulty wiring, short circuits, or other electrical problems can be difficult to diagnose and repair without specialized knowledge and tools.
- Mechanical Problems: If the engine has suffered internal damage, such as worn pistons or valves, a mechanic can determine the extent of the problem and recommend the appropriate course of action.
- Engine Overhaul: In some cases, a complete engine overhaul may be necessary to restore the mower to proper working order. This involves disassembling the engine, inspecting and replacing worn parts, and reassembling the engine.
Prevention is Key: Maintaining Your Craftsman Lawn Mower
Regular maintenance can help prevent many common issues that can lead to a lawn mower refusing to start. Here are some key preventive measures:
- Change the oil regularly: Fresh oil helps keep the engine lubricated and running smoothly. Consult your owner’s manual for recommended oil change intervals.
- Replace the air filter: A clean air filter allows the engine to breathe properly. Replace the air filter at least once a season.
- Clean the spark plug: A clean spark plug ensures optimal ignition. Use a wire brush to clean the spark plug electrodes.
- Clean the carburetor: Periodically clean the carburetor to prevent fuel deposits from building up.
- Store your mower properly: When storing your mower for the off-season, make sure it’s clean, dry, and the fuel tank is empty.
- Inspect the engine: Regularly check for signs of wear, damage, or leaks.
Conclusion
A Craftsman lawn mower that won’t turn over can be a frustrating experience. However, with a methodical approach and some basic troubleshooting skills, you can often identify the culprit and get your mower back in working order. Remember to check the basics first, then delve into the ignition system and engine if necessary. If you’re unable to solve the problem yourself, don’t hesitate to consult a professional mechanic. And most importantly, practice regular maintenance to prevent future starting problems. Enjoy those mowing sessions!
FAQ
Why Won’t My Craftsman Lawn Mower Turn Over?
This is a common problem with lawn mowers, and there are a few things you can check to diagnose the issue.
Q: What are the most common reasons a Craftsman lawn mower won’t turn over?
A: The most common reasons a Craftsman lawn mower won’t turn over are a dead battery, a faulty ignition system, or a clogged fuel system. You should first check the battery, and if it is dead, replace it. If the battery is good, you can then check the ignition system by making sure the spark plugs are properly connected and that the ignition coil is working. Finally, if the battery and ignition system are both good, you can check the fuel system by ensuring that the fuel line is clear and that the fuel filter is not clogged.
Q: How do I check if the battery is dead?
A: The easiest way to check if your battery is dead is to use a multimeter. If the voltage reading is below 12.6 volts, the battery is likely dead. You can also try jumping the battery with another car or a battery charger. If the mower starts after jumping the battery, you know that the problem is with the battery.
Q: How do I check the ignition system?
A: The ignition system is responsible for sending a spark to the spark plugs, which ignites the fuel and makes the engine run. To check the ignition system, first, make sure the spark plugs are properly connected. If they are, you can then check the spark plugs themselves. If the spark plugs are old or dirty, they may need to be replaced. You can also check the ignition coil by making sure it is properly connected to the spark plugs and that it is getting power.
Q: How do I check the fuel system?
A: The fuel system is responsible for delivering fuel to the engine. To check the fuel system, first, make sure that the fuel line is clear and not kinked. You can then check the fuel filter, which should be replaced every season. If the fuel filter is clogged, it will restrict the flow of fuel to the engine, preventing it from starting.
Q: What if the fuel system is clean but the mower still won’t start?
A: If the fuel system is clean but the mower still won’t start, the problem may be with the carburetor. The carburetor is responsible for mixing fuel and air, and if it is dirty or clogged, it can prevent the engine from starting. You can try cleaning the carburetor yourself, or you can take the mower to a qualified repair shop.
Q: What if the lawnmower is making a clicking sound?
A: If your lawnmower is making a clicking sound when you try to start it, this could indicate a problem with the starter motor. The starter motor is responsible for turning the engine over, and if it is not working properly, it will make a clicking sound. You can try replacing the starter motor yourself, or you can take the mower to a qualified repair shop.
Q: What safety precautions should I take when working on my Craftsman lawn mower?
A: Before you start working on your Craftsman lawnmower, it is important to take some safety precautions. First, disconnect the spark plug wire to prevent the engine from starting accidentally. Second, wear safety glasses to protect your eyes from flying debris. Third, be sure to use a wrench or socket to loosen the spark plug, as trying to remove it by hand could damage the spark plug or your fingers. Finally, if you are not comfortable working on your mower, it is always best to take it to a qualified repair shop.