Thursday, November 7, 2019

NGK Spark Plug Decoder

NGK spark plugs are my brand. I've always had good luck with them whether it be power sports, lawn equipment or automobiles. NGK are one of the OEM brands for my KLR600. However, I erred by using the KL600-A1 (1984) plug on my KL600-B1 (1985) that was a different spec, a result of misinterpreting the Service Manuals.

I was able to determine that the only difference between the right and the wrong plug was that the A1 called for a resistor plug and I determined that using a handy NGK spark plug decoder below.


The decoder is very helpful to understand NGK plugs. I printed a copy and now keep it in my shop.

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