pulled the plugs on my bf today and the front cylinder is running rich. which would explain the occasional backfire that i get when I let off the throttle and use the engine brake to slow me down. cant really see were the fuel mixture screws are on the carb kind of hard to see.can anyone tell me were they are at. are they behind the black plastic cover on the front of the carb?? any help would be great thanks ahead of time.[img]i/expressions/face-icon-small-confused.gif[/img]

 

they are on the bottom of the carb.