If you want to execute maintenance on your own Sherco Trial 29 then it is usually recommended to possess a Workshop Manual for a guide if you want to know tips to take off a particular part for example, the Exhaust and install it again appropriately.
Sherco Trial 29 Workshop Manuals gives you identifiable diagnostic info with regards to your vehicle therefore if something is broken it helps you figure out what the issue is and easy methods to fix it. Then you are able to evaluate if this can be done by yourself or if the job is too big you could make a booking for your Trial 29 in with a nearby car garage.
Sherco Trial 29 manual