Yamaha 1996 50 HP Outboard Specs & Maintenance
The 1996 50 HP 4-stroke outboard is a milestone in modern marine engineering, combining smooth four-cylinder operation with outstanding fuel efficiency. Featuring a robust 58 cubic inch (935 cc) displacement, this motor delivers dependable torque and remarkably quiet operation for fishing boats and runabouts alike. Whether you’re tackling routine service or a complete overhaul, our technical specs guide gives DIY mechanics the exact data needed to keep this reliable powerhouse running strong.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 50 |
| Year Range | 1996 |
| Engine Type | 4-stroke |
| Cylinders | 4 |
| Displacement | 58 cu-in (935 cc) |
| Bore x Stroke | 2.48 x 2.95 in (63 x 75 mm) |
| Compression Ratio | 9.3:1 |
| Full Throttle RPM | 5000-6000 |
| Idle Speed (Neutral) RPM | 700-800 |
| Idle Speed (Trolling) RPM | — |
| Spark Plug (NGK) | DPR6EA-9 |
| Spark Plug (Champion) | RA8HC |
| Spark Plug Gap | 0.031-0.035 in (0.8-0.9 mm) |
| Ignition System | CDI |
| Ignition Timing (Idle) | 2-8 |
| Ignition Timing (Carb Pickup) | — |
| Ignition Timing (Full Advance) | 32-38 |
| Fuel System | Carb |
| Starting System | Electric |
| Oil Injection System | n/a |
| Injection Oil Ratio | n/a |
| Gear Oil Capacity (mL/cc) | 430 (2200) |
| Gear Oil Capacity (Oz) | 15 (77) |
| Approximate Weight | 230-248 lbs (104-112 kg) |
| Battery CCA / Reserve | 380 (70) |
| Battery Reserve | 124 minutes |
| Tach Pole Setting | 12 |
| Test Propeller Part Number | — |
| Test Propeller New Engine RPM | — |
Maintenance Summary
Keep your 1996 50 HP 4-stroke running smoothly with routine maintenance. Install fresh NGK DPR6EA-9 spark plugs set to a gap of 0.031–0.035 inches (0.8–0.9 mm). Always inspect lower unit gear lube, engine oil, and fuel filters annually to ensure quick starts and long-term reliability.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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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