Are we talking front or rear, spring preload, compression or rebound?

 

NO CLUE!!!!!!!!!!!!!!!!!CAN SOMEONE GIVE ME A BREIF EXPLANATION??????????

 

whats the best for jumping?

 

Why haven't you read your owner's manual, it should tell you in there how to adjust them, if they're adjustable.

I may be wrong on this if they're not adjustable but for example, on my 500 4wd, you take a special wrench and rotate it where the notch rests in the next position. It basically compresses the spring more or less giving a smoother/stiffer ride. The more the spring is compressed, the stiffer the suspension will be and vice versa. Now that's either going to make it softer or harder depending on which way you're going. Again, my 500 has 5 settings. Now the front shocks on my brother in laws 400EX are not adjustable I believe. Haven't really looked that closely but haven't noticed it either.

If you're looking for a smooth ride on trails, I'd go to the softest setting (should tell you in the manual) and if it's too soft and you're bottoming out frequently, go up one notch at a time and try it.

If you're motocrossing and jumping higher/farther then I'd start at the stiffest setting and go down until you're satisfied.

It sounds as if you're somewhat new to this so most likely you don't "really" need to mess with your suspension any more than the stock settings.