Part of the Yanmar Parts Manuals.
A worn plunger on the bench tells you what failed; it does not tell you Yanmar's number for its replacement, and the engine sits until you have it. This 36-page parts catalog, Yanmar publication Y00B4002, closes that gap for the 4TN84L-RB, 4TN84L-RBF, 4TN84L-RBVM, 4LN84L-RBFVM, and 4TN84L-RB/F engines with exploded views keyed to factory part numbers.
Coverage runs from the cylinder block, crankshaft and piston, and camshaft through the lubricating oil and cooling water systems to the fuel injection pump, governor, starting motor, and generator. Piston listings include 0.25 and 0.50 oversize pistons with rings, plus undersize main and thrust metals, so one order covers the machining.
Serial and spec number prefixes printed in the catalog let you confirm the match to your engine before ordering. It downloads as a bookmarked PDF, so the fuel injection pump breakdown is two clicks away, not twenty minutes of page turning.
What's Inside This Parts Manual
| System | Pages | Key Topics |
|---|---|---|
| Engine | 1-2 | Cylinder Block Assy, Round Gasket, Main Metal, Thrust Metal, Camshaft Bush, Cylinder Head Gasket, Gasket |
| Suc./Exh.Manifold & Cleaner | 10-11 | Hose, Air Cleaner Assy, Dust Pan Assy, Element Retainer, Element, Brace Assy, Rubber Seat, Cleaner Support Assy |
| Fuel Injection Pump | 20-22 | Pump w/ Governor & Feed Pump, Camshaft, Thrust Ball Bearing, Cam Shaft Support, Plunger w/ Barrel, Retainer A, Plunger Spring Shoe, Plunger Spring |
| Governor | 27-29 | Governor Case, Case, Governor Case Gasket, Governor Case Cover, Case Cover Gasket, Link, Governor Weight Assy, Sleeve |
| Gasket Set (Optional) & Tool | 34-36 | Gasket Set, Cylinder Head Gasket, Hydraulic Oil Pump Gasket, Oil Seal Case Gasket, Valve Stem Seal, Nozzle Protector, Nozzle Protecter, Nozzle Seat |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Main Metal Undersize | 0.25 | p. 2 |
| Thrust Metal Oversize | 0.25 | p. 2 |
| Piston w/Ring Oversize | 0.25 | p. 14 |
| Ring Set Oversize | 0.25 | p. 14 |
| Metal Pin Undersize | 0.25 | p. 14 |
