Part of the Yanmar Parts Manuals.
All 127 pages of this Yanmar B12-3 Parts Catalog map every component of the 2000-production Crawler Backhoe, from engine mounts to hydraulic oil piping, in factory part-number detail. Inside, you get exploded assembly views covering the engine, crawler drivetrain, cab, boom and arm cylinders, and the complete hydraulic piping network from tank to pump to control valve. Open to the hydraulic section for full oil routing schematics, or jump to the wiring diagram tracing battery, starting motor, dynamo, glow plug, and oil pressure switch connections. Coverage starts at engine serial 81954, production date July 2000, so you'll know exactly which part numbers apply to your machine before you order a single piece. No more reading off worn casting numbers and hoping the counterman guesses right. Bookmarked by system, searchable by keyword: pull it up on your tablet and have the right part number in hand before you even reach the counter.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Preface | 1 | |
| Vehicle Painted Color | 2 | Yanmar New Permanent Yellow, Yanmar New Grayish Green, Yanmar Deep Green, Yanmar Dark Olive Gray, Yanmar Red |
| Paint Part No / Color of Main Parts | 3 | Hood Part, Operation Machine Part, Engin Related Canopy Body and Cover, Driving Frame Part, Blade, Lock Lever |
| Wiring Diagram | 4 | Battery, Starting Motor, Dynamo, Glow Plug, Oil Pressure Switch, Hour Meter |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Vehicle Model Name | B12-3 | p. 1 |
| Vehicle Manufacturing Date (from) | 2000/7~ | p. 1 |
| Engine Manufacturing Date (from) | 2000/4~ | p. 1 |
| Engine Serial Number (from) | 81954~ | p. 1 |
| Nut Size | M 8 | p. 16 |
| Clamp Size | 60 | p. 16 |
| Fuse Rating | 40A | p. 32 |














