If you need to do repairs to your Kymco 150 Grand King then it is usually a good idea to have access to a Workshop Manual to use as reference should you want to know the way to take out a specific part for instance the Door and fit it again in the correct way.
Kymco 150 Grand King Workshop Manuals can offer you particular diagnostic details on your vehicle therefore if something is playing up it will help you work out what the problem is and the best way to make it better. You can then assess if this can be achieved yourself or if the job is too big you can book your 150 Grand King right into a suitable friendly mechanic.
Kymco 150 Grand King manual