Shaky handlebars!

[ardy3491]

Thanks for the quick reply. yes i am new. been riding for 2 months now. it happens in all gears.Its not just vibratons, its like as if the handle bars are wiggling. tire pressure is good, it has about 3400 miles on it, but the previous owner used it in his training class so its been used roughly. im pretty sure the chain is adjusted correctly but im not sure, im very new at this.