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Honda GX390 Spark Plug Socket Size Guide

    Honda GX390 Spark Plug Socket Size

    Overview

    The Honda GX390 is a powerful and reliable engine commonly used in various applications, including generators, pressure washers, and construction equipment. One important aspect of maintaining this engine is ensuring the spark plug is in good condition. To remove or replace the spark plug, you will need the appropriate socket size. In this article, we will discuss the spark plug socket size for the Honda GX390 engine.

    Spark Plug Socket Size Chart

    Engine Model Spark Plug Socket Size
    Honda GX390 13/16″ (21 mm)

    Steps to Remove or Replace the Spark Plug

    1. Before starting any work on the engine, make sure it is turned off and the spark plug wire is disconnected to prevent accidental ignition.
    2. Locate the spark plug on the engine. It is usually positioned on the side or top of the cylinder head.
    3. Using a socket wrench, select a socket that matches the spark plug socket size required for the Honda GX390 engine, which is 13/16″ (21 mm).
    4. Attach the socket to the wrench and carefully insert it onto the spark plug.
    5. Gently turn the socket counterclockwise to loosen the spark plug. Be cautious not to apply excessive force to avoid damaging the spark plug or the engine.
    6. Once the spark plug is loose, continue turning it by hand until it can be completely removed from the engine.
    7. If you are replacing the spark plug, ensure the new one is the correct type and gap specified by the manufacturer.
    8. Insert the new spark plug into the engine by hand, making sure it is threaded correctly.
    9. Use the socket wrench to tighten the spark plug in a clockwise direction. Again, be careful not to overtighten.
    10. Reconnect the spark plug wire to the spark plug.

    Conclusion
    Knowing the correct spark plug socket size for your Honda GX390 engine is essential for proper maintenance and replacement. By following the steps outlined in this article, you can easily remove or replace the spark plug and ensure the engine continues to run smoothly. Remember to always consult the engine’s manual for specific instructions and safety precautions.