Yamaha 1984-93 200 HP Outboard Specs & Maintenance
Built between 1984 and 1993, this classic 200 HP 90-degree V6 two-stroke outboard is a true powerhouse on the water. Boasting a muscular 158 cubic inch (2596 cc) displacement across six cylinders, it delivers the raw hole-shot performance vintage boating enthusiasts crave. Whether you are restoring a classic hull or keeping a trusted workhorse running strong, our database provides the technical specs and service insights DIY marine mechanics need.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 200 |
| Year Range | 1984-93 |
| Engine Type | 90 LV 2-st |
| Cylinders | 6 |
| Displacement | 158 cu-in (2596 cc) |
| Bore x Stroke | 3.54 x 2.68 in (90 x 68 mm) |
| Compression Ratio | |
| Full Throttle RPM | 4500-5500 |
| Idle Speed (Neutral) RPM | 675-725 |
| Idle Speed (Trolling) RPM | 550-600 |
| Spark Plug (NGK) | B8HS-10 |
| Spark Plug (Champion) | L78C |
| Spark Plug Gap | 0.035-0.039 in (0.9-1.0 mm) |
| Ignition System | |
| Ignition Timing (Idle) | 6-8 ATDC |
| Ignition Timing (Carb Pickup) | 5-7 ATDC |
| Ignition Timing (Full Advance) | 21-23 |
| 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) | 980 |
| Gear Oil Capacity (Oz) | 33.1 |
| Approximate Weight | 392-434 lbs (178-197 kg) |
| Battery CCA / Reserve | 380 (70) |
| Battery Reserve | 124 minutes |
| Tach Pole Setting | 12 |
| Test Propeller Part Number | YB-1626 |
| Test Propeller New Engine RPM | 5350-5500 |
Maintenance Summary
Keep this 200 HP V6 running reliably with routine seasonal care. Always monitor the water pump impeller, fuel filters, and gearcase lube. For optimal ignition performance, install fresh NGK B8HS-10 spark plugs set to a gap of 0.035–0.039 inches (0.9–1.0 mm) to ensure easy starts.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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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