Before removing the spark plugs, blow away any dirt accumulated in the spark plug wells with compressed air to prevent it from falling into the cylinders.
Spark plug type (manufacturer) CR9EK (NGK)
Damage/wear ^ Replace the spark plug.
Abnormal color ^ Replace the spark plug. Normal color is medium-to-light tan.
(with a spark plug cleaner or wire brush)
(with a wire Thickness gauge) Out of specification ^ Regap.
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