Be sure to add me to your favorites list Yamaha BBN4F III Fretless Bass Guitar Service Manual. This is a printed paper hardcopy copy of a Service manual for the Yamaha model BBN4F III fretless bass guitar. It would certainly be helpful when working on any of the previous BBN4 models as well. This one is extremely lightly used and includes: Cover sheet / TOC Overall assembly / exploded view of the diecast bridge parts list / full list of parts, * marks the new parts for the "III" model circuit diagram wiring / F R pickups, F R volumes Tone dial specifications / full specs on this bass This is a manual or document, this is NOT a piece of equipment or instrument. If you have any questions, I'm always happy to answer them. Thank you so much for looking! Please check out my Store!