What are the step-by-step instruction on how to change the oil on a dirt bike and what tools needs to be use?

tools will very depening on the Bike.most of the time it is a 13mm or 14mm on the draine plug check to see what size before you start this process.first you need to start the bike and let it warm up the oil so to break loose all the debris from use. This is about 15 min. stand your bike where it is standing as straight up as possible, and you can get to the drain plug with ease.place a rag of some sort under the bike to catch any spill,place a oil pan (I use a butter bowl)under the bike to catch the draining oil.loosen the drain plug and you are there.Be carful the bike does not fall over as you loosen the drain plug. GOOD LUCK