If you need to do auto repairs for your Triumph T100 then it is usually recommended to have a Workshop Manual to use as personal reference if perhaps you need to know the right way to take off a specific part for example the Wheel and fit it again correctly.
Triumph T100 Workshop Manuals will provide you with precise diagnostic details for your car or truck so if something is playing up it will help you figure out what the problem is and easy methods to correct it. You can then determine if this can be achieved by yourself or that the job is simply too big you can book your T100 in with a trusted garage.
Triumph T100 manual