If you have to do adjustments on your own Yamaha TZ 250 then it is usually recommended to own a Workshop Manual to keep just for personal reference in the event you need to know ways to take off a certain part for instance the Exhaust and install it again in the correct manner.
Yamaha TZ 250 Workshop Manuals offers clear certain diagnostic guidelines for your automobile so if something is wrong it will help you work out what the situation is and easy methods to make it better. Then you are able to determine if this can be done yourself or if the job is too big it is possible to make a booking for your TZ 250 in to a decent garage.
Yamaha TZ 250 manual