ok not sure where to start on this one, i have a 98 500 scrambler 4x4, sometimes when going in a straight line at high or low speeds it will suddenly pull hard to the left or right, first time it happend i was going full speed on pavement when it pulled to the right and i hit a tree, if anyone could PLEASE give me any info at all why this is happening it would be great

 

sounds like your hubs are engaging. I'm not really familiar with your atv but if it has wet hubs when was the last time you changed the fluid?

 

i just bought this atv, so not sure when it was last changed. i noticed to that the iner cv joints are really bad, would they cause this? i don't really think it would seeing as how it is in 2 wheel drive, but i don't know much about it

 

sometimes it dosn't matter if your in 2 wheel. what do you mean by cv's are bad...........try a search of this site about your problem i'm sure its been discussed before

 

the joints on the axle are bad, i read on here somewhere that there is some kind of fluid you can put in the hubs to clean them first before you put the hub fluid in. is this true?