Manual format
The format of this manual has been designed to make service procedures clear and easy to understand.
Use the following information as a guide for effective and quality service.
- Parts are shown and detailed in an exploded diagram and are listed in the component list (see “1” in the following figure for an example page).
- The component list consists of part names and quantities, as well as bolt and screw dimensions (see “2” in the following figure).
- Symbols are used to indicate important aspects of a procedure, such as the grade of lubricant and the lubrication points (see “3” in the following figure).
- Tightening torque specifications are provided in the exploded diagrams (see “4” in the following figure), and in the related detailed instructions.
Some torque specifications are listed in stages as torque figures or angles in degrees. - Separate procedures and illustrations are used to explain the details of removal, checking, and installation where necessary (see “5” in the following figure for an example page).
TIP:
For troubleshooting procedures, see Chapter 4, “Troubleshooting”.

Abbreviation
The following abbreviations are used in this service manual.
| Abbreviation | Description |
|---|---|
| ABYC | American Boat and Yacht Council |
| API | American Petroleum Institute |
| ATF | Automatic Transmission Fluid |
| AWG | American Wire Gauge |
| CAN | Controller Area Network |
| CARB | California Air Resources Board |
| CCA | Cold Cranking Ampere |
| CL | Command Link |
| DN | Down side |
| ECM | Electronic Control Module |
| EPA | Environmental Protection Agency |
| EX | Exhaust |
| F | Forward |
| ID | Identification |
| IN | Intake |
| ISC | Idle Speed Control |
| ISO | International Organization for Standardization |
| MCA | Marine Cranking Ampere |
| N | Neutral |
| PON | Pump Octane Number |
| PORT | Port side |
| PTT | Power Trim and Tilt |
| R | Reverse |
| RC | Reserve Capacity |
| SAE | Society of Automotive Engineers |
| SOHC | Single Overhead Camshaft |
| STBD | Starboard side |
| TCI | Transistor-Controlled Ignition |
| TDC | Top Dead Center |
| TPS | Throttle Position Sensor |
| UP | Up side |
| Y-COP | Yamaha Customer Outboard Protection |
| YDIS | Yamaha Diagnostic System |
