Hunticehunter

i bought this Yamaha YZF 750 R and it was delivered to my house, it started and ran okay, but the following day it would not start, it has plenty of fuel, and it has a weak couple of firing actions then it will not start, i can smell fuel,but with out the manual i do not know what to do next. the last bike i had was a BSA goldstar DB34 and before that a Velocette Thruxton, Triumph tiger 100 C so only knowing classic British bikes i am lost on this machine, so any help would be appreciated