If you have to conduct adjustments for your Cagiva Brillo 125 then it is always a good idea to have access to a Workshop Manual to use as a reference in case that you want to know tips on how to strip off a certain part like the Wheel Bearing and fit it again efficiently.
Cagiva Brillo 125 Workshop Manuals can provide specific diagnostic information for the car or truck therefore if something is broken it will help you ascertain what the issue is and tips to fix it. After that you can evaluate if you can do this by yourself or if the job is too big you can actually book your Brillo 125 into a decent friendly mechanic.
Cagiva Brillo 125 manual