If you have to perform fixes to your Bultaco Metralla 250 GT then it will always be a good plan to own a Workshop Manual to keep just for a reference in case that you need to know ways to strip off a specific part such as the Clutch and fit it again in the correct way.
Bultaco Metralla 250 GT Workshop Manuals can offer you exact diagnostic facts for your car or truck so if something is not working it helps you find out what the issue is and some ways to resolve it. You can then decide if this can be done yourself or if ever the job is simply too big it is possible to make a booking for your Metralla 250 GT into a suitable garage.
Bultaco Metralla 250 GT manual