how often do i change the air filter and spark plug on my kx 85dirt bike?

[MARK GAMEZ MAN]

i have a 2007 kx 85 dirt bike i want to change the spark plug and air filter but i don't no if it's to soon or not please help thank you

 

[element_skateboards9307]

that all depends on how much it's used. if you race, you should change, (the spark plug at least) every 4 races or so. if you don't, use it much i'd say about every two and a half months. i'm sure you can figure out the median to those two ends.

 

[element_skateboards9307]

that all depends on how much it's used. if you race, you should change, (the spark plug at least) every 4 races or so. if you don't, use it much i'd say about every two and a half months. i'm sure you can figure out the median to those two ends.