If you want to perform fixes on your Polini Minicross X3 R then it is always a great idea to possess a Workshop Manual for reference if perhaps you want to know the right way to take out a specific part for example Wheel and install it again in the correct way.
Polini Minicross X3 R Workshop Manuals can provide distinct diagnostic wisdom with regards to your car therefore if something is broken it will help you ascertain what the situation is and tips on how to resolve it. You can then evaluate if this can be done yourself or that the job is simply too big you can still book your Minicross X3 R in to a decent repair garage.
Polini Minicross X3 R manual