Yamaha 1994-96 80J HP Outboard Specs & Maintenance
Built between 1994 and 1996, the robust 80J HP outboard motor is a legendary workhorse prized for its punchy 4-cylinder, 2-stroke architecture. Packing a generous 106 cubic inch (1730cc) displacement, this engine delivers impressive hole-shots and smooth cruising power. Whether you are restoring a mid-90s classic hull or keeping a trusted vessel running smoothly, our expert technical database provides the exact factory specifications and maintenance data DIY marine mechanics need to keep this 80J running strong.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 80J |
| Year Range | 1994-96 |
| Engine Type | 90 LV 2-st |
| Cylinders | 4 |
| Displacement | 106 cu-in (1730 cc) |
| Bore x Stroke | 3.54 x 2.68 in (90 x 68 mm) |
| Compression Ratio | 6.7:1 |
| Full Throttle RPM | 4500-5500 |
| Idle Speed (Neutral) RPM | 600-700 |
| Idle Speed (Trolling) RPM | — |
| Spark Plug (NGK) | BR8HS-10 |
| Spark Plug (Champion) | QL78C |
| Spark Plug Gap | 0.035-0.039 in (0.9-1.0 mm) |
| Ignition System | CDI |
| Ignition Timing (Idle) | 4-6 ATDC |
| Ignition Timing (Carb Pickup) | 3-5 ATDC |
| Ignition Timing (Full Advance) | 24-26 |
| 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 | 340 lbs (154 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
Routine maintenance keeps your 106 ci 2-stroke purring. Always run properly gapped NGK BR8HS-10 spark plugs set to 0.035–0.039 inches (0.9–1.0 mm). Inspect the water pump impeller annually, maintain clean fuel lines, and change the lower unit gear lube regularly to ensure reliable, long-lasting performance on the water.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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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