yes with the airbox cover off so that you have access to the carb throats, with the engine running, give each carb shots of the fogging oil for a couple minutes, but not enough to kill it, and then after alternating through the carbs for a couple minutes, spray it faster into them to kill the engine with the fogging oil. Now you don't want to start it again until next year. Take the spark plugs out and spray fogging oil down each cylinder while slowly turning the engine over by hand. This will coat the cylinder walls, protecting them as well. Put the plugs back in and put the airbox back together and it should be good to go for the summer (as long as you have the fuel stabilized/drained)