It is essential to test the ignition coil in a chainsaw when troubleshooting ignition problems. The ignition coil produces the high voltage needed to ignite the fuel mixture with a spark. Check the coil’s function if the chainsaw will not start or isn’t performing right. Multimeter the resistance across the coil’s terminals to see if it’s healthy. A chainsaw’s ignition coil ensures a smooth and efficient operation. Troubleshooting potential issues with your chainsaw starts with testing the coil.
Understanding the Chainsaw Ignition Coil:
A coil converts low voltage from batteries into high voltage to spark spark plugs. Sparks ignite air-fuel mixtures, powering engines. Check the primary and secondary windings of a coil for resistance.
Tools are Required
Materials and Tools to Gather:
Multimeter: Measures voltage and resistance.
Spark Tester: A specialized tool for testing the ignition system’s spark strength.
Screwdriver: For removing the chainsaw’s ignition coil.
Maintaining a Chainsaw Coil
Low-voltage electricity sparks ignite the air-fuel mix and power the engine. The coil needs regular maintenance and testing to work smoothly and prevent problems.
Maintenance Practices
Cleaning: Keep the coil clean to remove dirt, debris, and moisture. You can gently clean the coil with a soft brush or compressed air.
Inspection: Check the coil for damage, cracks, or overheating. If you see any damage, go to replace it.
Secure Connections: Make sure the wiring is tight and corrosion-free. Coils can have loose or corroded connections.
Safety Precautions Before Testing Chainsaw Coil
Safety is paramount when working with chainsaws. Take these safety measures before testing chainsaw coils:
- Cool-Down Period: Wait at least 30 minutes after using the chainsaw to let it cool completely. Components that are hot can burn you.
- Spark Plug Wire Disconnection: To prevent unintentional ignition, disconnect the spark plug wire.
- Protective Gear: Wear safety glasses and gloves to protect your eyes from flying debris.
- Ventilation: Test in a well-ventilated area to avoid inhaling chainsaw exhaust fumes.
- Insulated Tools: Only handle electrical components with insulated tools to avoid shocks.
- Avoid Dropping Objects: Be careful not to drop tools into the chainsaw, as it could damage it.
- Seek Professional Assistance: It’s a good idea to hire a qualified technician to test the coil for you if you’re nervous.
When working with electrical components, safety comes first. Test a chainsaw coil safely by following these precautions.
Testing Procedure:
Step 1: Safety First
Be sure to turn off and disconnect the chainsaw from all power sources. You have to wear safety gear, like gloves and goggles.
Step 2: Accessing the Coil
Access the ignition coil depending on your chainsaw. For this, you might have to remove the engine cover.
Step 3: Primary Winding Test
Disconnect Spark Plug: This will prevent accidental starts.
- Multimeter Setup: Switch to resistance mode.
- Primary Winding Test: Get a multimeter and connect it to the coil’s primary terminals. For resistance values, check the manual. Between 0.4 and 2 ohms is typical.
- Interpret Results: A faulty primary winding might show higher resistance than recommended.
Step 4: Secondary Winding Test
- Multimeter Setup: Set the multimeter to resistance.
- Secondary Winding Test: Put one lead on the spark plug wire and the other on the coil’s ground (metal part). You can find the resistance values in the manual. It should be between 4,000 and 10,000 ohms.
- Interpret Results: If the resistance is way off, the secondary winding might be bad.
Step 5: Continuity Test
Check the coil’s windings for continuity.
- Activate the continuity/diode check mode on the multimeter.The spark plug wire connection and the coil’s ground should be connected.A continuous beep or zero resistance means the circuit is good.
An Interpretation of Test Results and Potential Solutions
Analyzing test results:
1. Out of range results or continuity breaks tell you something’s wrong with the coil.
2. Faulty coils can cause trouble starting, erratic engine performance, and even engine failure.
Recommended actions:
1. Replace the coil if you suspect it’s faulty with a new, high-quality one.
2. Make sure you read the chainsaw manual first. The coil is faulty if there is an interruption.
FAQ
Is it safe to test the coil myself?
Sure, as long as you wear safety gear and disconnect the spark plug wire. In addition, ask a pro if you’re unsure.
What does the test result mean?
A resistance reading that’s abnormal or a weak or no spark indicates a problem. Test results that fall outside the specified ranges probably indicate a faulty coil.
How do I replace a faulty chainsaw coil?
You need special skills and knowledge to replace a chainsaw coil. For detailed instructions, check your chainsaw manual. Don’t be afraid to ask a chainsaw technician for help.
Can I prevent coil failure?
Make sure your chainsaw coil is maintained regularly. This includes:
- Remove dirt and debris from the coil
- Checking the coil for damage or cracks
- Making sure electrical connections are tight and corrosion-free
- Keeping the chainsaw dry to prevent moisture damage
Can I use a universal chainsaw coil?
No, universal coils can cause compatibility issues and damage to chainsaws. Make sure you use a coil designed for your chainsaw.
Conclusion:
It takes meticulous measurements and a methodical approach to test a chainsaw ignition coil. Test results that fall outside the specified ranges or a break in continuity indicate a coil problem. It might be necessary to replace the coil in these cases. You should also consult the manufacturer’s guidelines for accurate diagnosis and safe resolution if you’re not sure.
