Yamaha 25 hp four-stroke outboards Model: F25 (imported) outboard end frame height (mm / in): 550 / 21.7 Weight (kg): 64 Engine type: 2-cylinder Displacement (cm3): 498 Bore and stroke (mm): 65x75 output (hp): 18.4 / 25.0 Maximum speed region (rpm): 5000-6000 Compression ratio: 9.87 Fuel supply system: Carb Intake System: SOHC Ignition: CDI- microcomputer ratio: 27 : 13 (2.08) Alternator: 80W Operation: Handle fuel supply means: start the engine splash lubrication: manual tilt & tilt mode: Manual Note: there are initial startup, the engine automatically switches cable, shoal navigation device, initiating protective gear overheat warning device, overspeed control devices, propellers, fuel tank (24 liters), tool kits, emergency start rope, spare spark plug Yamaha (Yamaha) marine engine with stable performance, high-powered, low fuel consumption, low emissions and other characteristics, excellent rust and corrosion systems can help increase the durability of outboard, and its durability is a recognized brand marine engines currently.