If you wish to do maintenance tasks to your UM Matrix II 170 then it is always a good plan to own a Workshop Manual to keep just for reference just in case you need to know ways to take off a particular part for example Exhaust and match it again appropriately.
UM Matrix II 170 Workshop Manuals will give you special diagnostic facts on your vehicle so if something is wrong it can help you understand what the problem is and how you can correct it. You will be able to analyse if you can do this by yourself or in the event the job is too big you are able to make a booking for your Matrix II 170 right into a nearby car garage.
UM Matrix II 170 manual