If you want to do auto repairs to your Triumph Rocket III Classic Tourer then it will always be a good idea to own a Workshop Manual to keep just for a reference if perhaps you need to know proven methods to remove a particular component like the Exhaust and install it again properly.
Triumph Rocket III Classic Tourer Workshop Manuals can provide identifiable diagnostic information on your vehicle so if something is wrong it helps you discover what the situation is and ways to resolve it. You can then decide if this can be done by yourself or if ever the job is just too big you are able to make a reservation for your Rocket III Classic Tourer in to a local garage.
Triumph Rocket III Classic Tourer manual