Mercury 30MLHGA 30HP – EFI 20″ Shaft Tiller Manual Start

Mercury 30MLHGA 30HP EFI Tiller

The Mercury 30MLHGA is a rugged 30HP FourStroke outboard engineered for lightweight portability and direct manual tiller control on high-transom vessels in the US maritime sector. Boasting a 500cc inline 3-cylinder SOHC engine architecture and a dry weight of 145 lbs, it provides an power-to-weight ratio with the reliability of battery-free EFI. This 20-inch long shaft model features a manual start tiller and a specialized Gas Assist Tilt system. Our dependable marine outboard engines deliver the mechanical reliability and EFI efficiency needed for peaceful navigation in deep coastal estuaries and sailboats.

Operational peak performance for this Mercury 30HP is achieved across the elevated 5800 to 6200 RPM range, providing excellent top-end speed for a portable unit. The 2.17:1 gear ratio offers a mechanical advantage that translates the 500cc torque curve directly into steady hull planing and superior trolling capability. Manufactured in the USA, this corrosion-resistant motor features advanced Digital Inductive ignition to helps support a quiet, comfortable ride during long days navigating American inland lakes and coastal wind patterns.

Technical Specifications of Mercury 30MLHGA

• The new 500cc inline three-cylinder SOHC design delivers consistent, vibration-free torque and rapid acceleration under load.
• Manual pull-start mechanism paired with battery-free EFI helps support reliable ignition without the need for a heavy marine battery.
• Gas Assist Tilt system utilizes a pressurized cylinder to make engine lifting and shallow water adjustments from the tiller position.
• Electronic Fuel Injection (EFI) helps support reliable zero-choke starting and incredibly easy maintenance without carburetor jets to clog.
• The ergonomic tiller handle provides direct steering control and precise throttle adjustments for tight maneuvering in river channels.
• An integrated 15 Amp alternator provides charging capability to power essential marine navigation electronics and lights.

Battery-Free EFI Induction

Mercury’s advanced EFI system operates completely battery-free on this manual start model. It continuously monitors atmospheric variables to deliver the appropriate air-fuel ratio, guaranteeing instant one-pull starts and preventing engine bogging during rapid acceleration scenarios, completely eliminating the maintenance headaches of a carburetor.

Gas Assist Convenience

The Gas Assist Tilt system features a gas-charged cylinder that supports the weight of the motor. This allows the captain to easily tilt the engine into shallow water positions or full tilt from the tiller seat with minimal physical effort, ensuring rapid boat control in changing coastal environments and sailboat docking maneuvers.

20-Inch Long Shaft Auxiliary

The 20-inch shaft length is purposefully designed for high-transom vessels and sailboat auxiliary brackets. Its hydrodynamic profile minimizes drag while ensuring the propeller stays efficiently submerged for consistent forward thrust, preventing cavitation in rolling ocean swells or heavy tidal flows.

Mercury Factory Warranty

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

High-Transom Skiff Match

This 20-inch tiller outboard is the ideal match for high-transom aluminum fishing boats, utility skiffs, and as a kicker for larger vessels. It provides the sustained high-end thrust needed for navigating difficult coastal tidal flows while offering portable convenience and EFI reliability.

Maintenance & Longevity

Routine maintenance of the 1.8L oil capacity in the wet sump is vital for maintaining internal mechanical tolerances. Always flush the cooling system with fresh water after each salt-water mission.Maintenance note: Follow the manufacturer’s service procedures and lubrication specifications for the engine and gearcase.