Yamaha 1995-96 50 HP Outboard Specs & Maintenance
The 1995-1996 50 HP 3-cylinder 2-stroke outboard motor remains a fan favorite for lightweight craft, offering exceptional power-to-weight performance and legendary punch. Built around a robust 43 cubic-inch (698 cc) inline engine, this mid-range workhorse is prized by DIY marine mechanics for its mechanical simplicity and easy serviceability. Whether you’re restoring a classic runabout or maintaining your daily fisher, our database provides the technical guidance you need to keep it running strong.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 50 |
| Year Range | 1995-96 |
| Engine Type | IL 2-stroke |
| Cylinders | 3 |
| Displacement | 43 cu-in (698 cc) |
| Bore x Stroke | 2.64 x 2.60 in (67 x 66 mm) |
| Compression Ratio | 6.0:1 |
| Full Throttle RPM | 4500-5500 |
| Idle Speed (Neutral) RPM | 750-850 |
| Idle Speed (Trolling) RPM | 550-650 |
| 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 |
| Ignition Timing (Idle) | 6-8 ATDC |
| Ignition Timing (Carb Pickup) | 6-8 ATDC |
| Ignition Timing (Full Advance) | 24-28 |
| Fuel System | Carb |
| Starting System | Electric |
| Oil Injection System | PB or 50:1 PM |
| Injection Oil Ratio | PB or 50:1 PM |
| Gear Oil Capacity (mL/cc) | 430 |
| Gear Oil Capacity (Oz) | 14.5 |
| Approximate Weight | 164-200 lbs (75-91 kg) |
| Battery CCA / Reserve | 380 (70) |
| Battery Reserve | 124 minutes |
| Tach Pole Setting | 6 |
| Test Propeller Part Number | YB-1611 |
| Test Propeller New Engine RPM | 5250-5450 |
Maintenance Summary
Keep your 43 cu in (698 cc) engine running smooth with routine maintenance. Ensure crisp ignition by running NGK B8HS-10 spark plugs gapped to 0.035-0.039 inches (0.9-1.0 mm). Regular carb synchronization, clean 2-stroke fuel mixes, and seasonal lower-unit gear oil changes will keep this 3-cylinder running reliably.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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.
Spot an error or discrepancy in these specs? Please contact us with your engine details so we can update our database.
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