Yamaha 1995 50 HP Outboard Specs & Maintenance
The 1995 50 HP 4-stroke outboard represents a milestone in marine engineering, combining smooth four-cylinder performance with exceptional fuel efficiency. Displacing 58 cubic inches (935 cc), this reliable mid-range motor delivers the quiet, smoke-free torque boaters love for trolling and cruising alike. Whether you’re restoring a classic hull or keeping a dependable workhorse afloat, our database provides the technical specs and maintenance guides you need to keep this vintage 4-stroke running like new.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 50 |
| Year Range | 1995 |
| 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) | DPR5EA-9 |
| Spark Plug (Champion) | RA8HC |
| Spark Plug Gap | 0.031-0.035 in (0.8-0.9 mm) |
| Ignition System | CDI |
| Ignition Timing (Idle) | 3.5-6.5 |
| Ignition Timing (Carb Pickup) | — |
| Ignition Timing (Full Advance) | 27-33 |
| 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
Keeping your 1995 50 HP 4-stroke in top shape requires routine oil changes, fresh gear lube, and proper ignition care. Install NGK DPR5EA-9 spark plugs gapped precisely to 0.031-0.035 inches (0.8-0.9 mm) to ensure smooth idling and optimal fuel efficiency every time you launch.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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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