Be sure to add me to your favorites list Yamaha BB614 / BB615 4 and 5 String Bass Guitar Service Manual. This is a printed paper hardcopy copy of a Service manual for the Yamaha 4 and 5 string bass, models BB614 and BB615. This one is in excellent condition and includes: Cover sheet / TOC Overall assembly / exploded views of the diecast bridge and Jack Installation (for both models) parts list / full list of parts, * marks the new parts for these models (for both models) circuit board circuit diagram wiring / F R pickups, F R volumes Tone dial specifications / full specs on these bass guitars 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. Thanks for looking, Check out my Store!