I'm having trouble with my atv,it started when i noticed a lot of vibration in the floor boards and in the handle bars,then i started hearing strange noises coming from the cover where the clutches are,also there's a clicking sound coming from the pull start side of the motor; now it's acting crazy,after it sets for awhile like over night,you go to ride it and it's like something is hung up,it revs up but you ain't moving,but give it some more gas and something breaks loose and it takes off only to do it again, it does this 3or4 times then it stops doing it. after that it just jerks all the time you're riding it, it also back shifts hard when you let off the gas,like the ebs isn't working right;any help would be appreciated. it's a 2004 sp 400 with ebs with 7,600 miles. thanks wayout,out..................

 

You need to pull your secondary off and check you rollers/ buttons and see if you spring is broke or not too. If it's as bead as it sounds you most likley will need a new helix, and buttons. To avoid th is problem in the future you should in stall a team secondary on your machine they are 100% bullet proof.