Mercury 30MHGA 30HP – Four Stroke Manual Start 15-Inch Graphite

Mercury 30MHGA 30HP EFI Graphite

The Mercury 30MHGA is a high-performance 30HP FourStroke outboard featuring a unique Graphite finish and battery-free Electronic Fuel Injection (EFI) for the US recreational marine market. Utilizing a robust 500cc inline 3-cylinder SOHC architecture and weighing 132 lbs, this engine offers an exceptional power-to-weight ratio with the mechanical simplicity of a manual start. This 15-inch short shaft model is equipped with a Gas Assist Tilt system, making it the premier choice for premium aluminum skiffs and inflatable tenders. Our dependable marine outboard solutions guarantee the mechanical integrity and EFI efficiency necessary for reliable everyday maritime operation.

Operational peak performance for the Mercury 30HP is maintained between 5500 and 6100 RPM, prioritizing consistent torque and thermal efficiency. The advanced battery-free EFI system ensures immediate throttle response and reliable one-pull starts without the need for a heavy marine battery. Manufactured in the USA, this highly corrosion-resistant outboard incorporates a 2.17:1 gear ratio to translate the 500cc torque curve into rapid hole-shot acceleration and steady hull planing in shallow coastal estuaries.

Technical Specifications of Mercury 30MHGA

• The 500cc inline three-cylinder SOHC architecture delivers smooth, vibration-free torque in a compact 132 lbs package.
• Exclusive Graphite finish provides a premium aesthetic and superior corrosion resistance for saltwater environments.
• Gas Assist Tilt system utilizes a pressurized cylinder to make engine lifting and shallow water adjustments effortless.
• Battery-Free Electronic Fuel Injection (EFI) ensures zero-choke starting and reliable performance without electrical dependency.
• Manual pull-start mechanism with an integrated decompression system allows for easy, low-effort ignition.
• Through-propeller exhaust design significantly reduces underwater backpressure and operating noise for a quieter ride.

Battery-Free EFI Induction

Mercury’s industry-leading EFI system allows the 30MHGA to operate entirely without a battery. It continuously monitors atmospheric variables to deliver the perfect air-fuel ratio, ensuring consistent performance and preventing engine bogging during rapid acceleration in the American saltwater environment, completely eliminating carburetor-related maintenance.

Gas Assist Tilt Versatility

The Gas Assist Tilt system features a gas-charged cylinder that supports the weight of the motor. This allows the operator to easily tilt the engine into shallow water positions or full tilt with minimal physical effort, providing a high level of convenience for boaters who frequently navigate varying water depths in river channels and coastal bays.

Inline 3-Cylinder 500cc Power

The transition to a 3-cylinder platform maximizes combustion efficiency and eliminates the vibration common in smaller portable engines. This design provides the smooth, reliable low-end torque required to push heavily loaded skiffs and inflatable tenders through strong currents without the weight of a larger engine block.

Mercury 3-Year Protection

Every portable Mercury 30HP unit is backed by a comprehensive 3-Year Limited Warranty for American owners. This factory-level protection ensures long-term peace of mind and grants access to genuine parts through a vast nationwide marine dealer service network.

Premium Portable Match

This 15-inch Graphite outboard is the ultimate power solution for premium aluminum skiffs and inflatable tenders. It provides the sustained high-end thrust needed for navigating difficult coastal tidal flows while offering unmatched portable convenience and a unique, professional appearance.

Maintenance & Longevity

Maintaining clean oil in the 1.8L wet sump lubrication system is vital for preserving the engine’s tight mechanical tolerances. Always flush the cooling system with fresh water after every saltwater outing. Pro Tip from the Shop: Periodically inspect the Gas Assist cylinder rod for salt accumulation and clean it with fresh water to ensure the seal remains intact, and always use a high-quality marine fuel stabilizer to protect the high-pressure EFI fuel injectors during off-season storage.