A simple guide to adjusting a Shimano Nexus hub gear | As Easy As Riding A Bike
Shimano Internal Gear Hub Service
The Golden Wrench: The Servicing of an Internally Geared Hub
I'm going to oil bathe this shimano nexus 7.. the proffesional bike repair person I asked to do this for me sprayed wd40 in it, €80 later I decided to just buy