If you want to perform fixes for your IZH Planeta 4 then it will always be recommended to have a Workshop Manual to use as a reference in the event you want to know the best way to strip off a particular part for instance the Brake Discs and match it again effectively.
IZH Planeta 4 Workshop Manuals will give you targeted diagnostic information for the car or truck therefore if something is faulty it can help you figure out what the situation is and how you can repair it. You can then assess if this can be achieved by yourself or in case the job is simply too big you can still make a reservation for your Planeta 4 into a nearby car garage.
IZH Planeta 4 manual