It's important to set the spark plug gap accurately as per the manufacturer's recommendations to ensure proper engine performance, ignition efficiency, and longevity.
Spark plug gap refers to the distance between the center electrode and the ground electrode of the spark plug. If the gap is too small, the spark may not jump the gap and ignite the fuel mixture properly. If the gap is too large, the spark may jump too early and cause engine knocking or pre-ignition.
Using a spark plug gauge, you can set the gap by gently bending the ground electrode until it matches the recommended measurement. Ensure that the spark plug gap is consistent on all cylinders, and replace worn or damaged spark plugs during routine maintenance.
Please refer to your specific Yamaha outboard motor's service manual for precise spark plug gap specifications and additional maintenance instructions.
