![Yanmar B50, B50-1, B50-C[R], 4TN84L-RBD parts list for exhaust pipe, muffler flange, gaskets, and air intake components.](https://youfixthis.com/wp-content/uploads/2026/06/yanmar-b50-b50-1-b50-c-r-crawler-backhoe-parts-catalog-000y00s3091-engine-parts-13-600x849.webp "yanmar-b50-b50-1-b50-c-r-crawler-backhoe-parts-catalog-000y00s3091-engine-parts-13.webp")
![Yanmar B50, B50-1, B50-C[R], 4TN84L-RBD parts list for exhaust pipe, muffler flange, gaskets, and air intake components.](https://youfixthis.com/wp-content/uploads/2026/06/yanmar-b50-b50-1-b50-c-r-crawler-backhoe-parts-catalog-000y00s3091-engine-parts-13-150x212.webp "yanmar-b50-b50-1-b50-c-r-crawler-backhoe-parts-catalog-000y00s3091-engine-parts-13.webp")
Part of the Yanmar Parts Manuals.
All 132 pages of this Yanmar B50 Parts Catalog PDF (OEM #000Y00S3091) map every part on the B50, B50-1, and B50-C[R] crawler backhoe, covering factory production years 1990-1992. Inside, you get exploded assembly views and OEM part numbers for hydraulic oil piping, control and pilot valves, swing, boom, arm, bucket, and blade cylinders, travel and turning motors, crawler and track components, cab interior, and the 4TN84L-RBD engine. Flip to any figure, spot your component in the exploded view, and pull the exact factory part number before you pick up the phone. The factory specs page pins the B50-C[R] maximum digging depth at 3600 mm standard, extending to 3800 mm with blade deployed. Chasing parts with a description and a guess costs time and wrong deliveries. Bookmarked by assembly section; search by keyword, land on the right figure, and order the correct number the first time.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Fuel System | Fuel Tank & Fuel Pipe, Accelerator | |
| Cooling System | Radiator & Oil Cooler | |
| Engine | Hyd. Oil Pump & Joint | |
| Electrical System | Battery, Work Lamp, Wiring Diagram | |
| Rear Axle, Differential & Brakes | Brake Valve | |
| Hydraulics & 3-Point Hitch | Swing Cylinder, Arm Cylinder, Remote Control Valve, Boom Cylinder, Bucket Cylinder, Blade Cylinder, Control Valve, Pilot Valve | |
| Body & Operator Station | Cabin, Bonnet, Hyd. Oil Tank, Seat Mount & Step, Track Frame & Idler, Turning Frame, Frame Cover | |
| Decals & Accessories | Label, Tool & Manual Case | |
| Other Components | Control Equipment, Electric Part, Heater & Defroster, Radio, Link Stand & Stopper, Greasing, Inlet Hose & Exhaust Pipe, Engine Mount, Boom & Arm, Blade, Hyd. Oil Piping, Track Roller & Carrier Roller, Crawler, Travel Motor, Turning Motor, Turning Driving Gears |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Max. digging depth | 3600 mm (3800 mm with Blade) | p. 2 |
