If you want to accomplish fixes on your Husqvarna TE 250 then it will always be recommended to possess a Workshop Manual to use as reference if perhaps you want to know ways to strip off a certain component for instance the Clutch and match it again properly.
Husqvarna TE 250 Workshop Manuals can offer you special diagnostic info for the automobile so if something is not working it can help you identify what the situation is and the way to repair it. You can then decide if this can be achieved yourself or if the job is simply too big you can still book your TE 250 in to a decent friendly mechanic.
Husqvarna TE 250 manual