robbieglasgow

hi i am supposed to be buyin a yamaham sr 125 the guy am getting it from said that he had it running with the old petrol in it (been there for abt 5 years) said he was doin me a turn and he put new fuel in it and guess what doesnt start tryed bump starting it makin a noise but still not firing took the plug out and gettin a spark any body got any ideas? been told the carb defo need cleaned but a bit hesitant anbout buying it if its gonnae cost me a arm and a leg thanks