This video shows our students removing the welch plug or cap that covers the air/fuel screw commonly found in powersports carburetors. This demonstration was filmed in the lab at Western Iowa Tech Community College Motorcycle and Powersports Technology Program. If you would like more info on the program feel free to contact the instructor @ 712-274-8733 ext 1204 or email shane.conley@witcc.edu or dirk.bak@witcc.edu