Pierburg carburetor manual for volvo 240

Good I would like to know if someone has any manual of a pierburg carburetor or some document that has all the component of this carburetor and the steps to disarm it and assemble it correctly and the adjustments that this carburetor can carry since I have a 240glg vold of the year 86 and I am undecided to disassemble it since I do not trust the mechanics and I would like to experience myself if someone has something that can help me I would be able to help me.