spraying carb clnr into your carb will well do almost NOTHING,it will clean the throat of the carb basiclly if ya wanna do something get some BRP/OMC Carbon guard for your fuel and get your self a can of BRP/OMC engine tuner and follow the directions on the can ,you will not belive the poop that will come out of your engine the next day,put in new plugs after the clean out and it will run a lot better,if your gonna use carb clnr (engine tuner) is the nuts for this, remove the carb dissasemble and let it soak overnight reassembly with maybe a new needle/seat for idle quality and few bucks in new gaskets and your all set