hey guys forgive me for a probably **** question!!! i come from a total off road background where air filters are as important as air in MY lungs!
so i get a f3 this winter, thing is in really good shape, medium miles, and ran really good. went to start it the other day {alot of winter here in northern michigan left} and it doesn't start no big deal gas smelled real bad so i go get oil filter, oil, plugs, and air filter....all good i've worked on alot of bikes..so i go pull the tank and go to pull the air filter cover off and there is a picture with the filter i got on it but it says there are three other air filters off to the side. do i need these also???? and yes the bad gas is out of the tank and carbs at the moment... thanks.....

i used to bleed orange!!!!!

 

The filter you should be concerned about is the main air filter.