Not not really. All you do is lay the bike down on its side so you dont have to drain the oil, Next, remove the shifter and engine case cover, which exposed the flywheel. There is an oil hole at the end of the crank, and damaging it can cause major engine problems, so it's important that a specially made puller is used when removing the flywheel. After the weight is added, the flywheel is put back in, and the nut is torqued down to the correct specifications. That is about it.