Take it completely apart and you will see these little like plastics spacer things put those aside and then take a paint can version of carb cleaner and soak each metal piece in it then blow everything clear then put carb back on and now make sure gas tank is empty with out starting pour gas derectly into carb where throttle is then put gas into the tank and give it throttle and kick it a few times without choke and after that when it starts rev it up in nutral lay off and rev it up and hold for a few seconds then lay off and rev back up and clear any excess gunk out then your good to go your welcome