The big problem with buying a used motorbike is that you never actually know the condition of the bike by just looking at it. You have to be really careful and always know exactly what you should be looking so that you can be sure that the amount that you are about to pay is reasonable. It is a really good idea to take someone that knows as much as possible about motorbikes with you when you look at what you might want to buy in the event that your knowledge is not high. There are many different things that you will need to check to make sure that the motorbike is in a good condition.
You might want to start everything with your frame. Look for any damage that might be noticed and analyze the wheels to make sure that the alignment is proper. You should also analyze the electrics so you will have to start the motorbike. Take a look at all indicators, try the horn, the lights, the gear switch and even look at the fuel pump. Let the bike run for around 1 minute to check for leaks that might appear. Fork seals have to be analyzed together with making sure that front suspension will be properly aligned.
When talking about the rear suspension, the important thing is to make sure that there are no seizure signs and that no leaks appear.
The idea is to basically try to figure out how much money you would need to invest after you buy the motorbike. In most situations there is at least something wrong as bikes can end up with some damaged parts as time passes. Make sure that you are going to analyze the tires too and see their tread depth and general condition.
One of the most important parts of the entire process is to take the motorbike on a test drive. This will allow you to check the steering and the general performance level. When you buy online there is a common misconception that this is not possible. However, in this case you need to understand that you will be able to actually see the bike before the payment is made. The list above is very good at deciding the general state of any motorbike that you might consider buying. Make sure that you also go to a professional mechanic if it is possible to get even more information.