The Mercury 25HP 4-stroke EFI outboard features electric + manual start, long shaft, and remote control steering. Mercury 4-stroke engines have long led the way in environmentally friendly outboard technology. Combining innovative engineering and trusted reliability, this EFI-equipped engine delivers smooth, quiet operation thanks to a redesigned powerhead balance system and soft rubber mounts that effectively dampen vibrations.
Key Features:
Long shaft
Electric + manual start
Remote control steering
EFI (Electronic Fuel Injection)
Smooth and quiet operation with optimized vibration isolation
Compliant with environmental standards
Engine Specifications:
Displacement: 500 cm³
Power: 25HP 4-stroke
Max RPM range: 5400–5800
Gear ratio: 2.17:1
Shallow water trim angle: 16°
Fuel system: EFI
Battery charging system: Yes
Fuel tank: External 25L (included)
Starting system: Electric + manual
Tilt & trim: Manual
Steering: Remote control
Weight: 60.1 kg
Cylinders: 3
Included Accessories:
1L engine oil
Tool kit
Propeller (pre-installed)
25L external fuel tank with hose
Emergency stop safety lanyard
Warranty: 5 years
User manual included.











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