If you want to perform maintenance on your own Kymco Stryker 125 then it is usually recommended to have a Workshop Manual to use as personal reference in the event you want to know techniques to take off a specific component much like the Brake Pads and match it again effectively.
Kymco Stryker 125 Workshop Manuals can offer you detailed diagnostic facts on your car so if something is wrong it can help you figure out what the issue is and the way to correct it. Then you are able to decide if this can be achieved yourself or in case the job is too big you can make a booking for your Stryker 125 in to a suitable repair garage.
Kymco Stryker 125 manual