Yamaha 1995-96 9.9 HP Outboard Specs & Maintenance
Looking to keep your 1995-1996 9.9 HP 4-stroke outboard running smoothly? Featuring a reliable 2-cylinder, 14 cu in (232 cc) displacement design, this twin-cylinder workhorse is a favorite among anglers and DIY boaters alike for its quiet operation and fuel efficiency. Whether you’re performing routine tune-ups or searching for exact ignition specs, our database provides the trusted technical data you need to maintain peak performance on the water.
Complete Technical Specifications
| Specification | Details |
|---|---|
| Model / Horsepower | 9.9 |
| Year Range | 1995-96 |
| Engine Type | 4-stroke |
| Cylinders | 2 |
| Displacement | 14 cu-in (232 cc) |
| Bore x Stroke | 2.32 x 1.67 in (59 x 42 mm) |
| Compression Ratio | 9.3:1 |
| Full Throttle RPM | |
| Idle Speed (Neutral) RPM | |
| Idle Speed (Trolling) RPM | |
| Spark Plug (NGK) | CR6HS |
| Spark Plug (Champion) | Z10 / Z12 |
| Spark Plug Gap | 0.024-0.028 in (0.6-0.7 mm) |
| Ignition System | CDI |
| Ignition Timing (Idle) | 2-8 |
| Ignition Timing (Carb Pickup) | — |
| Ignition Timing (Full Advance) | 32-38 |
| Fuel System | Carb |
| Starting System | Manual and/or Elec |
| Oil Injection System | n/a |
| Injection Oil Ratio | n/a |
| Gear Oil Capacity (mL/cc) | 320 (1000) |
| Gear Oil Capacity (Oz) | 10.8 (1.1 qt) |
| Approximate Weight | 91-105 lbs (42-105 kg) |
| Battery CCA / Reserve | 380 (70) |
| Battery Reserve | 124 minutes |
| Tach Pole Setting | 6 |
| Test Propeller Part Number | |
| Test Propeller New Engine RPM |
Maintenance Summary
Routine maintenance is straightforward on this 9.9 HP 4-stroke. Keep the twin-cylinder engine firing cleanly by gapping your NGK CR6HS spark plugs to 0.024–0.028 inches (0.6–0.7 mm). Check engine oil levels regularly and service the fuel system seasonally to ensure quick starts and reliable trolling.
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Notice: Specifications, fuel ratios, and maintenance guidelines listed on VintageMotorSpecs.com are compiled for historical reference and educational purposes only.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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