If you need to do repairs to your Izuka S50 then it is usually a good plan to have a Workshop Manual to use as personal reference if perhaps you need to know tips to strip off a certain part for example Gearbox and install it again effectively.
Izuka S50 Workshop Manuals gives you specific diagnostic information on your vehicle so if something is not working it helps you find out what the issue is and how you can repair it. Then you are able to analyse if this can be done on your own or in the event the job is simply too big you could make a reservation for your S50 in to a suitable repair garage.
Izuka S50 manual