Yamaha 1994-95 225 HP Outboard Specs & Maintenance
The 1994-1995 225 HP 2-stroke V6 outboard is a legendary powerhouse built for serious offshore performance. Featuring a massive 191 cubic inch (3130 cc) displacement and a robust 76-degree V-block design, this 6-cylinder muscle engine delivers incredible hole-shots and top-end speed. Whether you’re restoring a classic hull or keeping your daily runner purring, our database provides the exact specs, spark plug data, and technical guidance DIY mechanics need to keep this big-block running strong.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 225 |
| Year Range | 1994-95 |
| Engine Type | 76 LV 2-st |
| Cylinders | 6 |
| Displacement | 191 cu-in (3130 cc) |
| Bore x Stroke | |
| Compression Ratio | |
| Full Throttle RPM | 4500-5500 |
| Idle Speed (Neutral) RPM | 675-725 |
| Idle Speed (Trolling) RPM | 600-650 |
| Spark Plug (NGK) | BR8HS-10 |
| Spark Plug (Champion) | QL78C |
| Spark Plug Gap | 0.035-0.039 in (0.9-1.0 mm) |
| Ignition System | CDI Micro |
| Ignition Timing (Idle) | 8-12 ATDC |
| Ignition Timing (Carb Pickup) | 8-12 ATDC |
| Ignition Timing (Full Advance) | 18-20 |
| Fuel System | Carb |
| Starting System | Electric |
| Oil Injection System | Precision Blend |
| Injection Oil Ratio | Precision Blend |
| Gear Oil Capacity (mL/cc) | 1150 |
| Gear Oil Capacity (Oz) | 38.9 |
| Approximate Weight | |
| Battery CCA / Reserve | 512 (100) |
| Battery Reserve | 182 minutes |
| Tach Pole Setting | 12 |
| Test Propeller Part Number | — |
| Test Propeller New Engine RPM | — |
Maintenance Summary
Keeping your 225 HP V6 reliable requires precise ignition and fuel care. Always run fresh fuel and inspect your ignition system regularly. This model requires NGK BR8HS-10 plugs gapped strictly between 0.035–0.039 inches (0.9–1.0 mm) to ensure optimal combustion, smooth idling, and maximum high-RPM efficiency.
Disclaimer & Information Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only. Always verify data against an official OEM service manual prior to ordering parts or executing repairs. VintageMotorSpecs.com assumes no liability for repair errors, equipment damage, or personal injury resulting from the use of this data.
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