Part of the Yanmar Parts Manuals.
Every single bolt, pin, and hydraulic fitting on your machine is accurately mapped out in this 529-page Yanmar b4u-1 parts catalog pdf (OEM #Y00K3701). You get complete exploded views of the entire crawler backhoe, covering everything from the engine mounts and radiator assemblies to the 4-way multi-valve and boom pins. Open up detailed component breakdowns showing exact factory part numbers, interchangeability notes, and clear wiring diagrams to help trace complex electrical circuits. Verify your machine's standard electrical setup requires a 12V, 68Ah battery (FZG - D26L) directly from the factory specification charts before ordering any aftermarket replacements. Wrong parts mean wasted days. Grab this digitally bookmarked download, pull up the exact assembly on your shop tablet, and get your parts order right the first time.
What's Inside This Yanmar B4U-1 Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| How to Read This Parts Catalog | 1 | Ref. No., Level, Change Mark, Interchangeability Mark, Effective Machine No. |
| Introduction | 2 | Catalog Usage, Applicable Models, Genuine Parts Notes |
| Specifications | 3 | Model, Machine Mass, Engine, Output, Rotation Speed, Max. Digging Depth, Travel Speed |
| Vehicle Painted Color (Previous) | 4 | Early-Production Color Divisions, Descriptions, Munsell Numbers, Paint Part Numbers |
| Vehicle Painted Color (New) | 5 | Revised Color Divisions, Descriptions, Munsell Numbers, Paint Part Numbers |
| Paint Part No. | 6 | Spray-CAN Part Numbers, Spray Type, Application Quantity, Color-Code Cross-Reference |
| Wiring Diagram (1) | 7 | |
| Wiring Diagram (2) | 8 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Battery voltage and capacity | 12V, 68Ah - 1 (F2G - D26L) | p. 3 |
| Battery voltage | 12V | p. 3 |
| Battery capacity | 68Ah | p. 3 |




















