Hi I have just bought the FN2 type R. It was 60 reg, 60k mil and all service done by HONDA dealership, but receipt for 2018 was lost (it has the stamp on service book). According the service book, spark plugs should be changed around this mileage and I don't any record says spark plugs change, so I took one of them out to check. I thought it should look very bad but it seems okay after taking it out. The gap was just slightly more than 1mm (maybe 1.2 or something), just has a bit grey-brown color on it (see images), the insulator around electrode looks a bit brown-red color. So I am not sure whether I should change them or not now. It starts okay every time, takes around 1 to 2 second to start when cold. Did some google search and it seems this is at normal condition. Anyone know how to judge the condition of spark plugs? If they are fine, I could save some money and time Thanks a lot.