The following information has been taken from a Parker service manual for its authorized repair stations. Separate sections are provided for the different writing modes:
Fountain pen
Ballpoint pen
Rollerball pen
Mechanical pencil
The exploded view illustrates the various components of the Parker 75 fountain pen. Disassembly instructions are as follows:
Remove the cap and barrel.
If the pen is equipped with a converter, extract the ink and remove the converter; or, in the case of a cartridge, remove the cartridge.
Remove the nib assembly by pulling straight out (it is not threaded).
Do not handle the back end of the feed.
To disassemble the cap, insert the pen cap arbor into the inner cap and turn the inner cap counter-clockwise while holding the top fo the cap, along with the clip screw and clip.