it could be something in the clutch.

 

is there anyway i can tell what it is without putting it in a garage cuz im only 15 and money doesnt come easy for me lol

 

well im the same age....lol
i have a lt250r and a week after i got it i was flieing up my trail and the quad just started vibrating,i brought it to the shop where i bought it at and he fixed it for free.im not sure exactly what it was but i know it was somthing in the clutch.

 

i guess ill put it in the shope and hompefully its nothing big thanks for ur help man

 

well hope it works out to be minor repair.
PEASE!

 

Take a good look at the front sprocket. Ive seen them wear so much that the teeth are almost gone but you can still ride. It will make a terrible noise when loaded too much and the chain slips on the sprocket. My buddies 250r did that ,I thought the trans was junk at first. It would do it when you went up a hill or tried to wheelie. Also check your chain tension while your there. good luck

 

thats exactly what it sounds like......heavy footpeg vibration on left side?
only does it under load? check your front sprocket and chain. look for broken
or worn teeth. Rocky Mt Atv 6.99 ......lol

 

ya thats exacly what happenes whaleeditedbymoderator it does it especialy when i wheelie and go p hills but not on flat surfaces and it vibrated heavy on the left peg like yfzwes said

 

so i decided to get a new rear sproket as well as front but i wanna get a new set up instead of stock and i was wondering what is the best tooth size front and rear for more low end but not loosing a lot of top...because i race XC and u really only mostly use low end power for it

 

I would drop one tooth in the front and run stock size in the back.