Getting your marine propulsion engine running right starts with this 186-page Yanmar 6EY17W operation manual PDF (OEM #0AE17-G00100). Inside, you get full wire connection diagrams, exploded views of the cylinder head assembly, and a complete troubleshooting chart to quickly track down marine gear failures. Open up the standard maintenance tables to find exact adjustment values for the entire control system, intake swing arms, and fuel injection pump drive unit. Swap out the turbocharger bearings every two years to keep the engine breathing right, and always verify your nozzle sleeve is torqued perfectly to 235 N-m during a rebuild. Stop trusting guesswork when your vessel is stranded on the water. Download this bookmarked file straight to your tablet, search for the exact spec you need, and get back to work.
What's Inside This Yanmar 6EY17W Manual
| System | Pages | Key Topics |
|---|---|---|
| Introduction | 3-4 | Front of the Engine, Back of the Engine, Operation Side, Non-Operation Side, Direction of Rotation, Cylinder Number |
| For Your Safety | 7-17 | About Safety Labels, Precautions, Maintenance Precautions, Safety Labels (Warning Labels), Precautions for Lifting the Engine, Engine Nameplate |
| Product Overview | 18-31 | Principal Engine Specifications, Engine Component Names, Functions of Major Components, Control System |
| Fuel Oil, Lubricating Oil & Coolingwater | 32-36 | Fuel Oil, Lubricating Oil, Freshwater Cooling Water |
| Operation | 37-68 | Operation Preparation, Rechecking the Quantity of Lubricating Oil and Freshwater, Inspection Before Engine Start, Starting the Engine, Load Operation, Stopping the Engine |
| Periodic Inspections | 69-90 | Precautions for Inspections, Scheduled Inspections |
| Long-Term Storage | 91-92 | Storing the Engine for a Long Time, Restarting the Engine After Long-Term Storage |
| Troubleshooting | 93-104 | Troubleshooting Chart, Emergency Procedure for Marine Gear Failure, Troubleshooting Information |
| Disassembly, Assembly, Adjustment | 105-165 | Disassembling and Assembling the Cylinder Head and Accessories, Disassembling and Assembling the Piston and the Connecting Rod |
| Standard Maintenance Table | 166-169 | Standard Adjustment Value |
| Tightening Torque for Major Boltsand Nuts | 170-173 | - |
| Test Operation After Servicing | 174-176 | Checks After Assembly, Checks Before Operation, Checks After Installation, Warm-Up Operation, Cruise Operation, Engine Stop |
| Attached Table | 177-180 | Wire Connection Diagram, Parts Number List for Daily Wear Maintenance |
| Yanmar's Worldwide Service Network | 181-184 | Domestic Office, Overseas Office, Yanmar (Head Office), Yanmar Europe B.V., Yanmar Asia (Singapore) Corp. Pte. Ltd., Yanmar America Corp. (Ya) |
| Colophon | 185-186 | - |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Turbocharger bearing replacement interval | Every 2 years | p. 71 |
Yanmar 6EY17W Common Problems This Manual Covers
Yanmar 6EY17W engine cannot increase load beyond 450kW with turbocharger surging before reaching rated power. p. 163
Inspect the fuel injector assemblies for failure or unburnt fuel buildup. Test the fuel injection starting pressure on page 163 to verify it meets 35 MPa ± 0.5 MPa. Replace the turbocharger bearing if it has exceeded the interval of every 2 years noted on page 71.
Manual Section: TroubleshootingWater intrusion and rust accumulation in the intercooler stern-side plug area preventing core removal. p. 34
Remove the stern-side plug and drain assembly to clear water intrusion. Clean the intercooler core and inspect for rust. Refill the cooling system and verify the total engine oil capacity remains at 200 L as specified on page 34 to rule out internal fluid cross-contamination.
Manual Section: Periodic InspectionsInternal mechanical failure prevents shaft movement and engine is completely seized even with a breaker bar. p. 172
Drain the lubricating oil system and inspect for metal shavings. Check the cylinder head bolt tightening method on page 172, torqueing bolts one through six to 590 ± 30 N·m on the final step. Disassemble the piston and connecting rod to locate the exact point of internal seizure.
Manual Section: Engine Starting FailuresDegraded rubber motor mounts from diesel contact and excessive vibration with severe engine movement under load. p. 35
Replace the degraded OEM motor mounts contaminated by oil or diesel fuel. Verify the marine gear oil capacity matches 22 L according to page 35 before testing the installation. Run a test operation after servicing to confirm the new mounts eliminate excessive vibration under load.
Manual Section: Test Operation After ServicingFrequently Asked Questions
What is the torque spec for cylinder head bolts on a YANMAR 6EY17W?
For head bolts 1 to 6 (M22 x 1.5), the tightening torque is applied in three steps: 1st time 150 ± 20 N·m, 2nd time 350 ± 20 N·m, and 3rd time 590 ± 30 N·m. For auxiliary bolt 7 (M14 x 1.5), do not tighten during the 1st time, then apply 50 ± 3 N·m for the 2nd time, and 95 ± 4 N·m for the 3rd time.
What is the total and effective capacity of the engine lubricating oil for the YANMAR 6EY17W?
The total capacity for engine lubricating oil is 200 ℓ, with an effective capacity of 80 ℓ. This information is crucial for proper oil filling and maintenance.
What is the specified fuel injection starting pressure for the YANMAR 6EY17W engine?
The fuel injection starting pressure for the YANMAR 6EY17W engine is specified as 35 MPa ± 0.5 MPa. This pressure is a key parameter for the proper operation of the fuel system.
What is the recommended deflection for the alternator drive V-belt tension on the YANMAR 6EY17W?
The recommended deflection for the alternator drive V-belt tension is approximately 4 mm when pressed at 6.5 N. This ensures proper tension for the alternator's operation.
What are the lubricating oil capacities for the different marine gear models (YXH-500, YXH2-500, YXH-500L) used with the YANMAR 6EY17W?
The lubricating oil capacity for the YXH-500 marine gear is 22 ℓ, for the YXH2-500 it is 22 ℓ, and for the YXH-500L it is 45 ℓ. These capacities are essential for correct fluid levels in the marine gear.
What is the total capacity of freshwater for the YANMAR 6EY17W engine?
The total capacity for freshwater in the YANMAR 6EY17W engine is 85 ℓ. This capacity is important for maintaining the engine's cooling system.
What is the specified crankshaft angle before Top Dead Center (TDC) for the intake valve to open on the YANMAR 6EY17W?
The intake valve is specified to open at a crankshaft angle of 60°± 2° before Top Dead Center (TDC). This is a critical adjustment value for valve timing.
Document Quality
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