Yamaha 1993-96 30 HP Outboard Specs & Maintenance
The 1993-1996 30 HP 2-stroke outboard is a workhorse beloved by DIY boaters and vintage marine enthusiasts alike. Featuring a twin-cylinder, 496cc (30 cu. in.) inline design, this bulletproof engine delivers an ideal balance of lightweight portability and reliable hole-shot power. Whether you’re restoring a classic aluminum skiff or keeping a reliable fishing rig running strong, our database provides the exact factory specs and tune-up details you need to maintain peak performance.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 30 |
| Year Range | 1993-96 |
| Engine Type | IL 2-stroke |
| Cylinders | 2 |
| Displacement | 30 cu-in (496 cc) |
| Bore x Stroke | 2.83 x 2.40 in (72 x 61 mm) |
| Compression Ratio | 7.0:1 |
| Full Throttle RPM | 4500-5500 |
| Idle Speed (Neutral) RPM | 1100-1200 |
| Idle Speed (Trolling) RPM | 900-1000 |
| 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) | 0-4 ATDC |
| Ignition Timing (Carb Pickup) | — |
| Ignition Timing (Full Advance) | 23-27 |
| Fuel System | Carb |
| Starting System | Man or Man & Elec |
| Oil Injection System | Pre-Mix 100:1 |
| Injection Oil Ratio | Pre-Mix 100:1 |
| Gear Oil Capacity (mL/cc) | 320 |
| Gear Oil Capacity (Oz) | 10.8 |
| Approximate Weight | 115-126 lbs (52-57 kg) |
| Battery CCA / Reserve | 210 (40) |
| Battery Reserve | 59 minutes |
| Tach Pole Setting | 6 |
| Test Propeller Part Number | YB-1629 |
| Test Propeller New Engine RPM | 5250-5450 |
Maintenance Summary
Keeping your 30 HP running smoothly starts with basic ignition care. Always gap fresh NGK B8HS-10 spark plugs to 0.035–0.039 inches (0.9–1.0 mm). Routine maintenance on this twin-cylinder 2-stroke includes inspecting the water pump impeller, checking carb jetting, and using premium TC-W3 oil to prevent carbon buildup.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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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