I have a 98 polaris scrambler that is fouling spark plugs about twice a day, what could be causing this?

 

That means that you are running to rich. Lower the needle clip 1 slot to lean it out, open the air screw 1/2 turn and then check. To much fuel not enough air will foul plugs. Do you run pre-mix or injected?

 

It is injected, I thought about mixing and stop the injection, Would you advise this?

 

Hey 2manytoys, dont you think he should raise the clip to lean it out? Lowering the clip raises the needle and richens it up and vice-versa. Most also has a nylon spacer under the needle clip that you can remove and that will lean it out some. The biggest question is how long have you owned it and when did it start this? Kurt, I'm just messing with you, I know you know the answer, just typed the wrong thing.

 

Try the jetting if not adjust your pump.

 

OOOPS!!! Yes thats what i mean. AHH dont listen to me i have no clue what im talking about.

 

How about a clogged air filter or low on compression or even a bad throttle cable(the end that runs the oil injection). If you've owned this for a while and it just started doing this, than it could be any of these or more. Sitting here reading this post, that is what I'd start with.

 

Like the others have said if it just started fouling plugs it could be anything from a carb out of adjustment to a top end that's worn out.
Not to scare you but mine didn't start fouling plugs til right before the piston puked out on me the 1st time. I'd check the compression 1st as Elroy said just to rule that out. If the compression is good then the needle move is probably gonna solve your problem.
I mix my own I don't trust that oil injection system. It's not as convenient but at least you know exactly how much oil is getting mixed with your gas.

 

The plunger on the end of the choke cable was froze up in the carb. I finally got it out and clened it up and it is running wonderfuk...Thanks for all the help.