Question for ya. I just started riding and have been down to Haspin Acres in IN. I ride a 02 500 HO Sportsman. It's a great ride, but I rolled my quad over on the seat tiring to climb the baddest hill there. The quad ran fine the rest of the day (basically back to camp), however the next day it started sputtering and bogging at high throttle...then it got worse. It started doing it at half throttle, and now under much of any throttle at all. I must add that I enjoy mudding [img]i/expressions/face-icon-small-smile.gif[/img] , so there might be something to that. I did have the monster burried a couple times, but the engine never shut off! I did notice, right after it started bogging, that there was about an inch of oil in my airbox and that my stock filter was wet. Once I got home, I removed the filter completely, and tried rev'n it, and it still bogg's the same. Any help is greatly appreciated! Thanks

 

You need a new air filters, trust me! It might look dry but anytime one is rolled over they get soaked with oil because the vent lines go into the air box. Get a new filter and you'll be fine, I recommend a K&N also, do to better flow and they are reusable!

 

you need to change the spark plug too, it will get gas fouled any time the filter gets clogged
up.

 

i second that, grab ya an air filter and you'll be back