Used YAMAHA 100 HP 4-STROKE INJECTION — EXTRA LONG SHAFT, POWER TRIM, JET DRIVE (80 HP VIA COMPUTER, ORIG. 100 HP)
A high-performance jet drive built for shallow water and fast response. This Used YAMAHA 100 HP 4-STROKE INJECTION features an extra long shaft, power trim, and jet drive impeller. Originally 100 HP, now computer-reduced to 80 HP for versatile performance. Cleaned, test-run, and ready to run. Available now at World Bargain in Long Beach, California.
Key Features
- Genuine YAMAHA 100 HP (orig.) 4-stroke with electronic fuel injection—now computer-reduced to 80 HP.
- Extra long shaft for very deep transoms and specialized jet boat applications.
- Power trim and tilt for precise engine angle adjustment and easy trailering.
- Jet drive system: impeller-based propulsion for shallow-water operation and debris resistance.
- 4-stroke reliability: quieter operation, lower emissions, and no oil–fuel mixing required.
- Electric start with remote throttle/shift (as equipped; confirm controls included).
- Water-cooled engine with corrosion-resistant components and protective coatings.
Condition
- Used condition: exterior cleaned; shows normal use with minor wear.
- Computer successfully reduced output to 80 HP (originally 100 HP).
- Power trim and tilt operate smoothly and hold position well.
- Jet impeller and housing free of major damage; seals intact.
- Engine turns over smoothly and runs well during test run.
- Electrical connections secure; no significant corrosion evident.
- Sold as used; recommended pre-purchase inspection for extended offshore use.
Technical Specifications
| Model | YAMAHA 100 HP 4-Stroke (EFI) |
| Current Output | 80 HP (via computer reduction; originally 100 HP) |
| Shaft | Extra long shaft—confirm exact length for your application |
| Propulsion | Jet drive (impeller-based) |
| Trim/Tilt | Power trim and tilt |
| Starting | Electric start (key switch) |
| Fuel System | Electronic fuel injection (EFI) |
| Cooling | Water-cooled |
| Original Power Output | 100 horsepower |
| Engine Type | 4-stroke |
| Weight | Heavier than 2-stroke equivalents; built for stability and durability |
| Year/Serial | See engine plate—serial available on request |
Perfect For
- Jet boats, shallow-water craft, and specialized applications requiring extra long shaft clearance.
- Boaters who want jet drive reliability for debris-prone or rocky waters.
- Owners seeking versatile 80 HP performance from a 100 HP 4-stroke EFI foundation.
- DIY boaters comfortable with jet drive maintenance and computer tuning.
Why Buy This
- Versatile power: originally 100 HP, now tuned to 80 HP for balanced performance.
- Jet drive advantage: shallow-water operation and superior debris resistance.
- Extra long shaft: ideal for deep transoms and specialized jet boat setups.
- Power trim and tilt make trimming, trailering, and shallow-water operation effortless.
- 4-stroke + EFI: quieter running, cleaner exhaust, consistent power, and better fuel use.
- Trusted Yamaha reliability with widespread service and parts availability.
What’s Included
- Used YAMAHA 100 HP 4-Stroke EFI Extra Long Shaft Power Trim Jet Drive outboard (as pictured).
- Jet impeller and housing fitted.
- Power trim and tilt system (fully functional).
- Throttle/shift controls attached (if shown—confirm before purchase).
- Basic fuel line and primer bulb (if included—check listing).
- Sold as-is; no long-term warranty.
Visit or Contact Us
World Bargain
Long Beach, California
Local pickup available. Shipping can be arranged at buyer’s expense with proper crating.
Need exact extra long-shaft length confirmation, proof of computer reduction (80 HP), a short test-run video, or more photos? Contact us and we’ll verify fit for your jet boat application quickly.
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