Yamaha 50H
Yamaha 25B
Overview
If you're after no nonsense, lightweight, two stroke power, Yamaha's 25B ticks all the boxes. Built around a proven two cylinder CV platform, these engine have earned a stunning reputation for durability and reliability and can be seen powering vessels around every corner of the globe. Superior design and engineering allows these engines to run a 100:1 pre mix oil ratio for crisp response, less smoke and odor, and smooth operation. Yamaha's exclusive corrosion protection featuring self sacrificing annodses, Yamaha's YDC30 marine grade aluminium alloy and 5 stage painting process keeps the engine looking its best and operating in great condition long into its life.Specifications
Engine Type
2-Stroke, In-line 2
Bore x Stroke (mm)
72 x 61
Displacement (cc)
496
Recommended Maximum RPM
4500-5500
Fuel Management
Carb
Ignition
CDI
Lubrication System
Pre-mixing
Alternator Output
Optional with rectifier
Gear Ratio
2.08 : 1
Starter System
Manual
Operation Method
Tiller handle
Trim and Tilt Method
Manual tilt
Standard Features
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