Part of the Yanmar Operator Manuals.
Run one of these engines out of fuel and you will be hunting bleed screws before it fires again; this book gives you the order. It is Yanmar's own operation manual, publication 49961-205581, covering the 6LYA-STP and 6LY2A-STP marine diesel engines in 58 English pages.
Inside are the procedures owners actually use: supplying fuel and bleeding air, filling lube oil and cooling water, the periodic inspection schedule from the first 50 hours out to the 2000 hour items, the control panel and its warning lamps, long term storage, and the piping and wiring diagrams. These engines are known to be sensitive to coolant make-up, and guessed maintenance is how temperature alarms start; the factory procedure beats a forum thread.
The PDF is bookmarked throughout, so you land on the section you need in two clicks instead of paging through the whole book.
Complete the set for your 6LYA-STP, 6LY2A-STP
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 3 | |
| for Safe Operation | 5-8 | Fuel Oil, Lube Oil & Cooling Water |
| Explanation of Product | 9-18 | Use, Driving System Etc., Engine Specifications, Names of Parts, Major Servicing Parts, Control Equipment (Control Panel, Remote Control Handle) |
| Operation | 19-34 | Fuel Oil, Lube Oil & Cooling Water |
| Maintenance & Inspection | 35-47 | Periodic Inspection |
| Troubleshooting | 48-49 | Alarm Buzzer, Alarm Lamps Operation, Engine L.O. Pressure Warning Lamp, Cooling Water Temperature Warning Lamp, Starting Failures, Poor Exhaust Color, Warning Devices Faulty |
| System Diagrams | 50-58 | Piping Diagram, Wiring Diagram |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fresh water system cleaning/replacement interval (including heat exchanger tank) | Every 2000 service hrs. (or 4 yrs.) | p. 36 |
| Seawater pump impeller replacement interval | Every 2000 hours | p. 46 |
| Impeller replacement interval | Every 2000 hours | p. 45 |
| Recommended Battery Capacity | 12V×120Ah | p. 10 |
| Low Idling Speed | 700±25 rpm | p. 10 |
