Part of the Yanmar Operator Manuals.
Looking to master the daily operation of your Yanmar BY-Series marine engine? This 80-page Yanmar 6by operator manual pdf (OEM #0ABY0-G00101) delivers the exact factory instructions for the 4BY and 6BY models. Inside, you get a full breakdown of periodic maintenance schedules, emergency shut-down procedures, and complete diagnostic trouble codes to decode dashboard alarms. Open up the daily check section to find step-by-step guidance on bleeding the fuel system and verifying power steering fluid levels. Keep your engine running clean by swapping the fuel fine filter every 250 hours, and make sure to tighten the 5mm hex head hose clamps to exactly 1.0 - 1.5 N·m. Don't let a mystery dashboard alarm ruin your day on the water. Grab this natively bookmarked PDF, save it directly to your phone, and keep your marine engine running strong.
Complete the set for your 4BY150/150Z, 4BY180/180Z, 6BY220/220Z…
- Repair Manual: Yanmar 6BY, 4BY Service Manual (incl. Wiring)
- Repair Manual: Yanmar 4BY, 6BY Marine Engines Service Manual (incl. Wiring)
Other edition of this manual
What's Inside This Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 7-8 | Record of Ownership |
| Safety | 9-14 | Safety Precautions (Before You Operate, During Operation and Maintenance), Safety Decals |
| Product Overview | 15-24 | Yanmar BY-Series Features and Applications, New Engine Break in |
| Before You Operate | 25-36 | Diesel Fuel (Specifications, Filling the Fuel Tank, Bleeding the Fuel System), Engine Oil (Specifications, Acceptable Engine Oil, Checking Engine Oil, Adding Engine Oil) |
| Engine Operation | 37-40 | Starting the Engine, Starting at Low Temperatures, Shutting Down the Engine, Emergency Shut Down, Checking the Engine After Operation |
| Periodic Maintenance | 41-60 | Safety Precautions |
| Troubleshooting | 61-70 | Troubleshooting Chart (Starting Trouble, Exhaust Color, Vibration - Drive Disengaged, Vibration - Drive Engaged, Engine Knocks, Low Power Output, Engine Overheat, Engine Runs Cold, Coolant Loss) |
| Long-Term Storage | 71-72 | Prepare Engine for Long-Term Storage, Draining the Seawater Cooling System |
| Specifications | 73-76 | Engine Specifications, Tightening Fasteners |
| Epa Warranty Usa Only | 77-80 | Yanmar Co. |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Fuel fine filter replacement interval | Every 250 hours or one year whichever comes first | p. 46 |
| Fuel filter / water separator element replacement interval | Every 250 hours or one year whichever comes first | p. 46 |
| Engine oil filter replacement interval (initial) | Initial 50 hours | p. 46 |
| Engine oil filter replacement interval (subsequent) | Every 250 hours or one year whichever comes first | p. 46 |
| Seawater pump impeller replacement interval | Every 500 hours or 2 years whichever comes first | p. 46 |
| Seawater pump impeller replacement interval (long-term) | Every 2000 hours or 8 years whichever comes first | p. 59 |
| Seawater filter inspection interval | Daily | p. 46 |
| Seawater filter inspection interval (periodic) | Every 50 hours or monthly whichever comes first | p. 46 |
| Zinc anodes replacement interval | Every 250 hours or one year whichever comes first | p. 46 |
| Zinc anodes replacement criteria | Any anode having less than half its original size remaining should be replaced | p. 48 |
| Seawater pump belt inspection/replacement interval | Every 250 hours or one year whichever comes first | p. 47 |
| Alternator belt inspection/replacement interval | Every 250 hours or one year whichever comes first | p. 46 |
