How to Fix a Flooded Chainsaw: Quick Recovery Tips



Fix a Flooded Chainsaw

To fix a flooded chainsaw, remove the spark plug, drain excess fuel, dry the plug, pull the starter rope several times, then reassemble and start.

A flooded chainsaw can be a frustrating obstacle when there’s work to be done. But don’t worry, in this guide, we’ll take you through the process of diagnosing and repairing a flooded chainsaw engine.

Understanding the Problem: What is a Flooded Chainsaw?

A chainsaw is considered flooded when too much fuel has entered the combustion chamber, and as a result, the engine won’t start. This often happens when the saw is over-choked or if the starting procedure isn’t followed correctly. Before you begin the repair process, ensure your chainsaw has enough fuel, a clean air filter, and a good spark plug.

Step-by-Step Guide to Fixing a Flooded Chainsaw

Follow these steps to get your chainsaw back to working condition:

  1. Disengage the Chain Brake: Ensure that the chain brake is disengaged to prevent any accidental starts with a locked chain.
  2. Remove the Spark Plug: Using a spark plug wrench, carefully remove the spark plug from the engine.
  3. Drain Excess Fuel: With the spark plug removed, turn the chainsaw upside down or to its side to drain any excess fuel from the combustion chamber. Allow it to sit for a few minutes.
  4. Clean the Spark Plug:
    • Check the spark plug for wetness, which indicates flooding.
    • Clean the spark plug with a brush or rag to remove any fuel or carbon buildup.
    • If the plug appears damaged or excessively worn, replace it with a new one.
  5. Dry Out the Spark Plug Chamber: Using compressed air (if available), blow into the spark plug chamber to dry out any remaining fuel. Be careful not to let debris enter the chamber.
  6. Reinstall the Spark Plug: After drying and cleaning, reinstall the spark plug without connecting the spark plug cap. Make sure it is properly tightened.
  7. Pull the Starter Rope: Without the spark plug cap connected, pull the starter rope several times to vent air through the system and clear any remaining fuel.
  8. Reattach the Spark Plug Cap: Put the spark plug cap back on. Make sure it is properly connected to ensure a good spark.
  9. Start the Chainsaw: Follow the manufacturer’s recommended starting procedure to attempt to start the chainsaw. It may take a few pulls before the engine ignites, as residual fuel might still be present.

Note: If after several attempts the engine does not start, repeat the steps above as necessary. If the problem persists, there may be additional issues such as a faulty spark plug or carburetor problems.

Tips to Prevent Future Flooding

  • Familiarize yourself with the correct starting procedure as outlined in your chainsaw’s manual.
  • Use the choke only when the engine is cold, and do not over-prime the fuel system.
  • Regularly maintain your chainsaw by keeping the air filter clean, using fresh fuel, and replacing the spark plug when necessary.

When to Seek Professional Help

If you have followed all the steps and your chainsaw is still not starting, it might be time to seek professional help. A certified technician can diagnose other potential issues such as carburetor malfunction, ignition coil problems, or a seized engine.

Also learn: How to Cut a Large Log With a Small Chainsaw

Final Thoughts

Fixing a flooded chainsaw can be a simple task if you understand the mechanisms and follow the correct steps. Remember to always prioritize safety by wearing protective gear and ensuring the work area is free from hazards. With this guide, you’re well on your way to saving time and money by managing small repairs yourself.

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