Mercury 225 EFI & 250 EFI Outboard Service Manual (1997 Edition)
Complete 1997 Mercury 225 EFI, 250 EFI, 3.0 Liter Marathon, and 3.0 Liter SeaPro outboard service procedures. Includes diagnostics, electrical, fuel systems, and engine specifications. Part 90-822900R3.
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Models Covered & Key Technical Specifications
Mercury 225 EFI & 250 EFI Outboard Service Manual (1997 Edition)
Complete 1997 Mercury 225 EFI, 250 EFI, 3.0 Liter Marathon, and 3.0 Liter SeaPro outboard service procedures. Includes diagnostics, electrical, fuel systems, and engine specifications. Part 90-822900R3.
- Engine Power Output: 225 hp (167.8 kW) denotes the rated horsepower for the base engine configuration.
- Vehicle Weight Capacity: 440.0 lbs. (199.8kg) is the standard weight for the 20 in. shaft configuration.
- Ignition System Type: Capacitor Discharge provides a strong spark for reliable ignition and starting.
- Fuel System Type: EFI models utilize electronic fuel injection for precise fuel delivery and performance.
- Transmission Gear Ratio: 1.64:1 is the standard gear ratio for 1994 models, ensuring optimal torque transfer.
- Engine Displacement: 185.9 cu. in. (3047cc) signifies the total volume of the V-6 cylinder displacement for maximum power.
Professional Workshop Service Manual & Technical Specifications
Specialized Training Operator's Manual: Outboard Motor Official Mercury 225, 225 EFI, 250 EFI, 3.0 Litre Marathon, 3.0 Litre SeaPro Outboard - Factory Service & Repair Manual (1994-1997) Blueprint-Vault
Models: Mercury 225 (1994-1997) / Mercury 225 EFI (1994-1997) / Mercury 250 EFI (1994-1997) / Mercury 3.0 Litre Marathon (1994-1997) / Mercury 3.0 Litre SeaPro (1994-1997) // Category: Outboard Motor / System: Ignition Logic.
| Integrated-Framework | Diagnostic-Logic | Architecture |
|---|---|---|
| Ignition Specifications | Crank Position Sensor | Stator Ohms Test |
| Alternator System | Starter System | Fuel Pump Pressure |
| Throttle Position Sensor | Carburetor Models | Troubleshooting Procedures |
The manual presents information on engine timing, carburetor synchronization, and fuel pump testing. It details adjustments for throttle position sensors and idle speeds, alongside procedures for alternator belt tension. The document also covers troubleshooting for ignition modules and starter circuits. Torque specifications are provided for various components, ensuring proper assembly and functionality. The narrative style is methodical, emphasizing systematic approaches to maintenance and repair.
This service manual documents torque specifications for various engine components to ensure proper rotational loosening prevention.
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