So, your Craftsman lawn mower refuses to crank to life? Don't despair! This comprehensive guide will walk you through the most common reasons why your Craftsman mower won't start and how to troubleshoot them. We'll cover everything from simple fixes to more involved repairs, helping you get back to mowing your lawn in no time.
Pre-Start Checklist: The Basics
Before diving into complex troubleshooting, let's ensure we've covered the fundamentals. Many Craftsman mower starting problems stem from simple oversights.
1. Fuel: Is the gas tank full enough?
- Check the fuel level: A surprisingly common issue is simply running out of gas. Make sure you have enough fuel in the tank.
- Fuel Freshness: Old, stale gasoline can cause starting problems. If your gas is more than a month old, consider draining it and refilling with fresh fuel.
- Fuel Filter: A clogged fuel filter can restrict fuel flow to the engine. Inspect and clean or replace as needed (consult your owner's manual for guidance).
2. Spark Plug: Is there a spark?
- Location: Locate your spark plug (usually under a cover on the engine).
- Removal: Carefully remove the spark plug using a spark plug wrench.
- Inspection: Inspect the spark plug for damage, wear, or fouling (carbon buildup). A badly worn or fouled plug needs replacement.
- Testing: Connect the spark plug wire, hold the plug against the engine block (grounded), and pull the starter cord. You should see a bright blue spark. If not, the ignition system may need attention.
3. Air Filter: Is it clean?
- Location: Find the air filter (usually a foam or paper element in a housing).
- Removal: Remove the air filter cover and carefully take out the filter.
- Inspection: Inspect for dirt, debris, or damage. A clogged air filter restricts airflow, affecting engine performance. Clean or replace it as necessary. (Consult your owner's manual for specific cleaning instructions.)
Beyond the Basics: More Advanced Troubleshooting
If the pre-start checklist didn't solve the problem, let's delve into some more involved troubleshooting steps for your Craftsman mower:
1. Battery (if applicable): Is it charged?
Many Craftsman mowers have electric starts. A weak or dead battery will prevent the mower from starting. Test the battery voltage using a multimeter. If the voltage is low, charge the battery or replace it.
2. Blade Engagement: Is the blade free to spin?
A seized or damaged blade can prevent the engine from turning over. Disengage the blade and try to turn it manually. If it's stuck, investigate the cause (e.g., debris, bent blade).
3. Ignition System: Is it functioning correctly?
If there's no spark at the spark plug (as tested above), there might be an issue with the ignition coil, ignition switch, or other components within the ignition system. This requires more advanced diagnosis and might necessitate professional help.
4. Carburetor: Is it clean and functioning properly?
A dirty or malfunctioning carburetor can prevent the engine from getting the correct fuel-air mixture. Cleaning or rebuilding the carburetor often requires some mechanical aptitude and specialized tools. Consult your owner's manual or consider professional servicing.
When to Call a Professional
If you've gone through these troubleshooting steps and your Craftsman mower still won't start, it's time to consider professional help. A qualified small engine repair technician can diagnose more complex issues, such as problems with the engine itself or internal components.
Remember to always consult your Craftsman mower's owner's manual for specific instructions and safety precautions. Proper maintenance and regular inspections can help prevent many starting problems and keep your Craftsman mower running smoothly for years to come.
