IF this question has already been asked please direct me to the thread.....

How hard is ti to change out an o2 sensor on an 02 Quad?

 

Which one? There are two. One before the cat and one after it. They are simple enough to change, however, if they look rusted, hit them with a thick coating of WD40 or any other penetrating lubricant to help free them up. I would recommend soaking them overnight then working on it the next day after you spray them again.

 

By the way, you can easily find this and pleny of other info by using the search feature for future reference.

 

they aint to bad to do. I used WD-40 and it work. But use the right sizewrench and not vise grips

 

75k miles on my 2002 quad and I didn't need any sort of lube. Came right out. Unplug the wires first.

 

I have 205,000kms and the origionals came right out too

 

Ok, well I guess I shall find out how easy it is. I plan on replacing them here shortly.