Most motorcycle manufacturers recommend that the chain on your bike be replaced every 3,000 miles. This is to protect the workings of your motorcycle, including the drive sprockets and transmission, and to lessen the chances of chain-break during regular riding, which can lead to a premature end to your ride, or even serious injury. While most new motorcycle chains feature a master link that allows the chain to be taken apart literally in a snap, many stock chains do not. Fortunately, there is a way to break your master link-less chain for replacement without an expensive motorcycle chain tool.
Put down the kickstand or center stand on your motorcycle. If you have a designated motorcycle work stand, that may be helpful to use as working on the chain at chest-level is much easier than crouching down to reach it.
Use a socket wrench or combination wrenches to remove any bolts that hold on a chain guard, or anything else that may get in the way of your removing the chain. Refer to your owner's manual for specific directions, as every model is different.
Use a handheld Dremel tool with a 1/8-inch taper head Dremel bit to grind down one of the pins on the side of the chain facing you. If possible, grind the pin all the way through the first chain plate.
Use a screwdriver or a small prybar to bend the link outward until it separates from the ground-down pin. The chain plate should now rotate up or down, giving you plenty of room to slide the chain link off of the ground-down pin.
Pull the now-separated chain from the sprockets of the motorcycle and discard it responsibly. Most motorcycle service shops and dealers will recycle your old chains for you.
