If you want to do fixes on your own Kymco Nexxon then it will always be recommended to have a Workshop Manual for a reference if you need to know the best way to take out a particular component much like the Wheel Bearing and match it again in the correct manner.
Kymco Nexxon Workshop Manuals will give specified diagnostic guides with regards to your car or truck therefore if something is playing up it will help you identify what the situation is and the way to fix it. You can then assess if this can be achieved on your own or in case the job is simply too big you can actually make a booking for your Nexxon into a suitable friendly mechanic.
Kymco Nexxon manual