If you wish to conduct auto repairs to your CPI GTR 50 then it is always recommended to have a Workshop Manual to use as a reference just in case you want to know the right way to strip off a particular part for example the Dashboard and install it again perfectly.
CPI GTR 50 Workshop Manuals are able to offer special diagnostic information for your vehicle therefore if something is broken it can help you discover what the problem is and how to correct it. Then you are able to evaluate if this can be achieved on your own or that the job is simply too big you could make a booking for your GTR 50 right into a decent repair garage.
CPI GTR 50 manual