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Power. Versatility. Control. You'll find more bang for your buck in every three-cylinder two stroke Yamaha midrange.

Loop Charging increases combustion efficiency to optimize performance and fuel economy.

Virtually Maintenance-Free CD Ignition provides automatic spark advance to provide maximum power throughout all RPM ranges and make starting easy.

Yamaha's Loop Charged , Pulse-Tuned 3-cylinder design on midrange models delivers cleaner, more complete combustion for improved midrange performance and fuel economy.

Precision Blend Oil Injection automatically injects just right amount of oil into each individual intake based on current engine load and speed, to optimize performance and reliability.

Front Mounted Freshwater Flushing device makes it easy to completely flush the engine, in the slip or on the trailer, and without running the engine.
The engine Sensing Warning System alerts you to overheating and low oil situations, and protects the engine against over-revving.

Yamaha's ACP-221 Paint Process provides a 5-layer barrier against corrosion.

Stainless Steel is used for the drive shaft, the shift shaft, the prop shaft, and the steering tube for maximum corrosion resistance and long-term reliability.

Our Two Year Limited Warranty protects every Yamaha Two Stroke for pleasure use.



Parts Manual

Service Manual

Owners Manual

What year is my engine?

    Alternator: 10A
Manufacturer: YAMAHA Cooling:
Make: 90HP Ignition: CDI/Computer
Year: Starting: Electric
Engine Type: 90 HP 2-STROKE Exhaust:
Horsepower: 90 Trim:
Displacement: 69.6/1140(in/cc) Fuel Induction: Carb Loop Charged
Bore/Stroke: (in/mm) Lubrication: Precision Blend Oil Injection
Cylinders: 3 Steering
RPM: 4500-5500    
Weight: 261/119(lbs/kg) PRICING These prices are the "Manufacturer Suggested Retail Prices" (MSRP). These are just for comparison.
Gear Ratio: 2.00:1 US: 7.905 dollars
Shaft lenght: 20/508(in/mm) UK: pounds
Gears: Netherlands: euros
    France: euros
    Australia: dollars

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