Introduction
This manual provides essential information for the installation, operation, and maintenance of your new Ignition Coil. This high-quality aftermarket product is designed to replace original manufacturing part numbers 530039143 and 545199901. It is compatible with various Husqvarna, Poulan, Poulan Pro, Craftsman, and Sears chainsaw models.
Key features include:
- High quality and new aftermarket product.
- Direct replacement for Manufacture Part Numbers: 530039143, 545199901.
- Wide compatibility with Husqvarna, Poulan, Poulan Pro, Craftsman, Sears chainsaws.
- Package includes one ignition coil as pictured.

Setup and Installation
Proper installation is crucial for the correct functioning of the ignition coil. Always ensure the chainsaw is turned off and the spark plug wire is disconnected before beginning any work.
- Safety First: Disconnect the spark plug wire and ensure the chainsaw engine is cool. Wear appropriate safety gear, including gloves and eye protection.
- Locate Old Coil: Identify the existing ignition coil on your chainsaw. It is typically located near the flywheel.
- Remove Old Coil: Carefully disconnect any wires attached to the old coil and unbolt it from the engine block. Note the orientation for reinstallation.
- Install New Coil: Position the new ignition coil in the same location and orientation as the old one. Secure it with the appropriate bolts. Ensure a small air gap (typically 0.010-0.012 inches or 0.25-0.30 mm) between the coil and the flywheel magnets. A business card can often be used as a feeler gauge.
- Connect Wires: Reconnect all wires to the new ignition coil. Ensure connections are secure and free from corrosion.
- Reattach Spark Plug Wire: Firmly attach the spark plug boot to the spark plug.
If you are unsure about any step, consult a professional or refer to your chainsaw's specific service manual.
Operating Principles
The ignition coil is a critical component of your chainsaw's ignition system. Its primary function is to transform the low voltage from the battery or magneto into the high voltage required to create a spark at the spark plug. This spark ignites the fuel-air mixture in the engine's cylinder, initiating combustion and powering the chainsaw.
Once installed, the ignition coil operates automatically as part of the engine's normal function. No user intervention is required during operation beyond ensuring proper installation and maintenance of the overall ignition system.
Maintenance
While the ignition coil itself requires minimal maintenance, regular checks of related components can prolong its lifespan and ensure reliable performance.
- Spark Plug Inspection: Regularly inspect and replace the spark plug as recommended by your chainsaw manufacturer. A worn or fouled spark plug can put undue stress on the ignition coil.
- Wire Connections: Periodically check all electrical connections to the ignition coil and spark plug for tightness and corrosion. Clean any corroded terminals.
- Coil Gap: If the chainsaw experiences intermittent spark or starting issues, re-check the air gap between the ignition coil and the flywheel magnets.
- Cleanliness: Keep the area around the ignition coil clean and free from debris, sawdust, and oil buildup, which can interfere with its operation or cause overheating.
Troubleshooting
If your chainsaw is experiencing ignition-related problems, the ignition coil may be a contributing factor. Here are some common issues and potential solutions:
| Symptom | Possible Cause | Solution |
|---|---|---|
| No Spark or Weak Spark | Faulty ignition coil, incorrect coil gap, bad spark plug, loose connections. | Check spark plug, verify coil gap, inspect all wiring connections. If issues persist, replace ignition coil. |
| Engine Cranks but Won't Start | Similar to no spark, or fuel delivery issues. | Confirm spark presence. If spark is good, check fuel system (carburetor, fuel lines, filter). |
| Intermittent Spark | Coil overheating, loose connections, failing coil. | Ensure proper ventilation around coil. Check and secure all connections. Consider coil replacement if problem persists. |
Always consult a qualified technician if you are unable to diagnose or resolve the issue.
Specifications
- Product Dimensions: 4 x 3 x 3 inches
- Item Weight: 1.76 ounces (0.05 Kilograms)
- Model Number: 530039143
- Replacement Part Numbers: 530039143, 545199901
- Installation Type: Bolt-On
- UPC: 712201718201
Warranty and Support
This product is an aftermarket replacement part. For any questions regarding fitment, installation, or performance, please contact the seller directly. Refer to your purchase documentation for specific return or warranty policies provided by the seller, Googas.
If you have any questions, please feel free to contact us via the platform where you purchased this product.