Part of the Yanmar Repair Manuals.
Pull the rocker cover on a 6EY17W and you are looking at valve lash with a set figure and a set procedure, neither of which you want to guess at. Yanmar publication 0AE17-G00100 is the factory operation manual for this marine propulsion engine, 186 pages in English, and it runs from daily checks all the way into full disassembly of the cylinder head, pistons, crankshaft, and fuel injection pump.
Beyond starting, load operation, and shutdown procedures, the book carries a troubleshooting chart, an emergency procedure for marine gear failure, scheduled inspection tables, and long-term storage instructions. The Disassembly, Assembly, Adjustment section walks through the governor, camshaft, cooling water pump, and injection pump drive unit step by step.
Guess a clearance or a torque and you pay twice: once for the part, once for the second teardown. The Standard Maintenance Table and the tightening torque tables at the back exist so you do not.
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 & Cooling Water | 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 Bolts and 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
Turbocharger surging under load
A 6EY17W that surges and refuses to take rated load often traces back to combustion imbalance from a failing injector rather than the turbocharger itself. The Troubleshooting Chart works through the symptoms system by system so you replace the right component first.
Manual Section: Troubleshooting p. 93Injector and fuel pump failure
Rough running, smoke, and uneven combustion mean the fuel injection pump and injection valves have to come out. The manual gives step-by-step disassembly and assembly for the fuel injection pump and its drive unit.
Manual Section: Disassembly, Assembly, Adjustment p. 105Skipped turbocharger bearing replacement
Yanmar schedules turbocharger bearing replacement every 2 years on this engine, and letting it slide invites the surging and load loss owners report. The Scheduled Inspections tables set this and the rest of the service intervals.
Manual Section: Periodic Inspections p. 69Cooling circuit corrosion
Untreated freshwater eats cooling passages and heat exchange surfaces from the inside, and by the time it shows up the damage is done. This section sets out the freshwater cooling water requirements that keep corrosion out of the circuit.
Manual Section: Fuel Oil, Lubricating Oil & Coolingwater p. 32Marine gear failure underway
A marine gear failure at sea leaves no time for guesswork. The manual includes a dedicated emergency procedure for marine gear failure alongside its troubleshooting information.
Manual Section: Troubleshooting p. 93Seizure risk after long layup
An engine that sat for a season without preservation can seize or score its liners on the first restart. The manual covers both storing the engine for a long time and the correct restart procedure afterward.
Manual Section: Long-Term Storage p. 91Frequently Asked Questions
Which engine does this manual cover?
The Yanmar 6EY17W marine propulsion engine. This is the factory operation manual, Yanmar publication number 0AE17-G00100, written in English.
Does it cover disassembly and rebuilding, or just operation?
Both. The Disassembly, Assembly, Adjustment section covers the cylinder head, pistons and connecting rods, cylinder liners, main bearings and crankshaft, timing gear and camshaft, fuel injection pump, and governor, followed by a Test Operation After Servicing section for the first run after reassembly. p. 105
Are torque values and adjustment specs included?
Yes. The Standard Maintenance Table lists the standard adjustment values, and a separate section gives tightening torque for the major bolts and nuts, so head and bearing work goes back together to factory figures. p. 166
What do I get when I buy?
A downloadable PDF of the complete 186-page manual (11.47 MB) with 64 bookmarks for fast navigation. You can print single pages for the bench or the whole book.
Will it help diagnose starting and load problems?
Yes. The Troubleshooting section includes a troubleshooting chart, troubleshooting information, and the emergency procedure for marine gear failure. The Operation section also covers inspection before engine start through load operation and stopping the engine. p. 93
How quickly can I access this manual after buying?
Instant PDF download (11 MB). You get the full 186-page searchable Operation Manual immediately after payment. Open it on your laptop, tablet, or phone right in the shop.
Am I able to print pages from this manual?
Yes. The PDF has no DRM restrictions, so print any page or section you need for your shop. Works with any standard printer.
Are electrical wiring diagrams included in this Yanmar 6EY17W Operation Manual?
Included. The Yanmar 6EY17W Operation Manual provides a wiring diagram for the electrical system.
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