If you need to execute adjustments to your Gilera Runner SP 50 then it is always a good idea to own a Workshop Manual to keep just for a guide in the event that you need to know simple methods to strip off a particular component much like the Clutch and match it again accordingly.
Gilera Runner SP 50 Workshop Manuals are able to offer specific diagnostic details with regards to your vehicle therefore if something is playing up it helps you determine what the problem is and tips on how to fix it. After that you can assess if you can do this yourself or that the job is simply too big it is possible to make a booking for your Runner SP 50 into a local repair garage.
Gilera Runner SP 50 manual