2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 21Get this manual

2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 21

6If compression is abnormally low, inspect the following itemsAVerify starter cranks engine over at normal speed (approximately
Chart, clean the spark arrester using the following procedure Spark Plug A light brown insulator indicates that plug is correctA
white or dark insulator indicates that the engine may need to be serviced or the carburetor (if equipped) may need to be
adjustedTo maintain hot, strong spark, keep the plug free of carbon ! WARNING Wait until the muffler cools to avoid burns
1Remove the three cap screws securing the spark arrester assembly to the muffler; then loosen and remove the arrester ATV-0051
! CAUTION Before removing spark plug, be sure to clean the area around the spark plugDirt could enter engine when removing
or installing the spark plugCF105A Adjust the gap to 0.7-0.8 mm (0.028-0.032 in for proper ignitionUse feeler gauge to check
the gap 2Using suitable brush, clean the carbon deposits from the screen taking care not to damage the screenNOTE: If the