1988-2006 Yamaha ATV YFS200 Blaster service manual PDF download file., Page 44Get this manual
SPARK PLUG INSPECTION
SPARK PLUG INSPECTION 1Inspect: Sparkplug type Incorrect Replace
For U.S.A Oceania D8ES (NGK) or W24ES (NIPPONDENSO) For CANADA, SAfrica
2lnspect: Electrode WearIDamage ReplaceInsulator color Normal condition is medium to light tan colorDistinctly different color Check the engine condition3Clean: Sparkplug Clean the spark plug with spark plug cleaner or wire brush4Measure: Spark plug gap Out of specificationRegapUse wire gaugeSpark Plug Gap: 0.7 0.8 mm (0.028