Yamaha 1996 105J HP Outboard Specs & Maintenance
Keep your 1996 105J HP 2-stroke outboard running at peak performance with our comprehensive technical database. Powered by a muscular 158 cubic inch (2596cc) 90-degree V6 block, this 6-cylinder workhorse delivers the raw power and high-torque reliability serious boaters demand. Whether you’re troubleshooting ignition issues or performing seasonal tune-ups, our guide provides essential specs, factory-correct gap settings, and practical advice tailored specifically for DIY marine mechanics.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 105J |
| Year Range | 1996 |
| Engine Type | 90 LV 2-st |
| Cylinders | 6 |
| Displacement | 158 cu-in (2596 cc) |
| Bore x Stroke | |
| Compression Ratio | |
| Full Throttle RPM | 4500-5500 |
| Idle Speed (Neutral) RPM | 675-725 |
| Idle Speed (Trolling) RPM | — |
| Spark Plug (NGK) | B8HS-10 |
| Spark Plug (Champion) | L78C |
| Spark Plug Gap | 0.035-0.039 in (0.9-1.0 mm) |
| Ignition System | CDI Micro |
| Ignition Timing (Idle) | 6-8 ATDC |
| Ignition Timing (Carb Pickup) | 6-8 ATDC |
| Ignition Timing (Full Advance) | 21-23 |
| Fuel System | Carb |
| Starting System | Electric |
| Oil Injection System | Precision Blend |
| Injection Oil Ratio | Precision Blend |
| Gear Oil Capacity (mL/cc) | n/a |
| Gear Oil Capacity (Oz) | n/a |
| Approximate Weight | |
| Battery CCA / Reserve | 380 (70) |
| Battery Reserve | 124 minutes |
| Tach Pole Setting | 12 |
| Test Propeller Part Number | — |
| Test Propeller New Engine RPM | — |
Maintenance Summary
Routine maintenance is key to keeping this 2596cc V6 firing smoothly. Ensure optimal combustion by installing fresh NGK B8HS-10 spark plugs gapped precise to 0.035-0.039 inches (0.9-1.0 mm). Always inspect fuel lines, water impeller, and gear lube to guarantee long-lasting marine performance.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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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