Part of the Yanmar Operator Manuals.
Crack the fuel filter loose on a Yanmar 4LHA and you have bought yourself an airlocked injection line; the bleeding procedure in this operation manual is the difference between a few minutes of hand priming and an afternoon of fruitless cranking.
It is Yanmar's factory operation manual, publication 49961-205431, for the 4LHA-HTP, 4LHA-HTZP, 4LHA-DTP, 4LHA-DTZP, 4LHA-STP and 4LHA-STZP marine diesels. The English section covers engine specifications, control panel and alarm functions, daily and cold-weather starting, clutch operation for the marine drive, long-term storage, and the full periodic inspection schedule from the initial 50 hour service through the 2000 hour items.
The numbers you actually reach for are here too: 15W40 lube oil and 13.0 liter capacity, 750 rpm low idle, V-belt deflection, a standard bolt torque table, and a troubleshooting chart for when an alarm sounds. 705 pages as a PDF download, bought once and yours to keep.
Complete the set for your 4LHA Series
- Parts Catalog: Yanmar 4LHA Series Marine Engine Parts Catalog
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| For Safe Operation | 4-8 | Warning Symbols, Safety Precautions, Location of Product Safety Labels |
| Explanation of Product | 9-22 | Engine Specifications, Names of Parts, Major Servicing Parts, Control Panel, Remote Control Handle |
| Before Operation | 23-31 | Fuel Oil, Lube Oil & Cooling Water, Supplying Fuel, Bleeding the Fuel System, Supplying Marine Drive Oil, Supplying Cooling Water |
| How to Operate | 32-41 | Inspection Before Starting, Starting, Adjusting the Engine Speed, Clutch Operation for the Marine Drive, Stopping the Engine, Long-Term Storage |
| Maintenance & Inspection | 42-54 | List of Periodic Inspections, Periodic Inspection Items |
| Trouble and Troubleshooting | 55-56 | Troubleshooting |
| System Diagrams | 57-63 | Piping Diagram, Wiring Diagram |
| Spanish | 69-135 | |
| Italian | 136-264 | French, German |
| Finnish | 265-388 | Dutch |
| Swedish | 389-512 | Norwegian |
| Danish | 513-574 | |
| Greek | 575-636 | |
| Portuguese | 637-698 | |
| Appendix | 699-705 |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Engine Lube Oil SAE Viscosity | 15W40 | p. 15 |
| Engine Lube Oil Capacity (All) | 13.0 l | p. 15 |
| Lube Oil Filter Part Number | 127695-35150 | p. 47 |
| Lube Oil Filter Torque | hand tight + 3/4 turn with filter wrench | p. 47 |
| Bore x Stroke | 100x110 mm | p. 13 |
| Displacement | 3.455 L | p. 13 |
| High idling rpm | 3700 ± 25 rpm | p. 13 |
| Low idling rpm | 750 ± 25 rpm | p. 13 |
| Lube oil capacity (All) | 13.0 L | p. 13 |
| Cooling water capacity (Engine) | 15 L | p. 13 |
| Recommended battery capacity | 12V×120Ah | p. 13 |
| V-belt tension (give) | 8~10mm | p. 54 |
