If you need to carry out fixes to your Suzuki ST 250 then it is always a great idea to have a Workshop Manual to keep just for personal reference should you need to know easy methods to remove a specific component for instance the Clutch and match it again in the correct manner.
Suzuki ST 250 Workshop Manuals offers clear distinct diagnostic guides on your vehicle therefore if something is not working it will help you find out what the problem is and ways to fix it. You can then determine if this can be done by yourself or in case the job is simply too big you can book your ST 250 in with a suitable repair garage.
Suzuki ST 250 manual