Mercury 300L 300HP Outboard – 20in Shaft, DTS, V8

Description

Secure the ultra-portable, 85cc Mercury 3.5MH to eliminate exhaustive rowing on small displacement hulls. Weighing just 17 kg, this single-cylinder carbureted block forces steady forward thrust, pushing loaded inflatable tenders across choppy marina basins. Measuring your mounting bracket verifies this 15 inch short shaft portable outboard operates without excessive drag.

Maneuver effortlessly through tight marina slips by leveraging the 360-degree tiller steering as a simple mechanical solution. You rotate the engine completely backward to generate instant reverse thrust without a gearbox shifter. Mercury casts the lower unit using corrosion-resistant aluminum alloys. This material barrier stops rapid metal pitting when leaving the kicker motor clamped to saltwater transoms.

Key Features of Mercury 3.5MH

• 17 Kilogram Dry Weight: Maximizes absolute portability, allowing a single operator to lift the engine physically onto high sailboat decks.
• 15-Inch Standard Shaft: Matches low dinghy transoms perfectly, preventing lower unit drag and maximizing fuel efficiency on light hulls.
• 360-Degree Tiller Steering: Allows the operator to spin the engine completely around, providing full reverse thrust instantly without a gearbox shifter.
• Integral 1.1L Fuel Tank: Eliminates external gas tanks and heavy fuel lines, freeing up critical floor space inside small inflatable tenders.
• 85cc Four-Stroke Powerhead: Produces smooth low-end torque internally, pushing heavy square-back canoes steadily against coastal tidal currents.
• Four-Position Manual Tilt: Adjusts the running angle physically, allowing the operator to lift the gearcase over shallow coastal reefs safely.
• Water-Cooled Engine Block: Prevents internal thermal failure completely, allowing continuous high-RPM running across wide bays without overheating.
• 2.15:1 Gear Ratio: Transfers single-cylinder horsepower to the propeller securely, maintaining forward momentum on heavily loaded dinghies.
• Manual Recoil Starter: Engages the flywheel directly via a physical pull cord, guaranteeing reliable ignition without heavy 12-volt battery systems.
• Clean Four-Stroke Combustion: Burns unleaded fuel highly efficiently without messy two-stroke oil mixing, keeping your tender completely free of oil slicks.

Why Choose Mercury 3.5MH

You purchase this 15-inch portable block strictly for small tenders or square-back canoes requiring absolute simplicity. It lacks neutral or reverse gears, relying entirely on physical engine rotation. Sourcing a lightweight mercury portable outboard motor keeps your tender legally powered.

• Measure your dinghy transom to confirm a 15-inch vertical drop requirement.
• Ensure the operator possesses the physical strength to lift 17 kilograms safely.
• Comply with strict harbor emissions laws utilizing clean-burning four-stroke technology.

Ideal Application and Vessel Fitment

This ultra-portable 15-inch outboard thrives on small inflatable tenders, square-back canoes, and rigid fiberglass dinghies requiring minimalist power. Because it features an integral fuel tank and weighs just 17 kilograms, operators can easily physically carry it from the main deck down to the tender. Rotating the tiller 360 degrees provides complete directional thrust, making this lightweight mercury portable outboard motor an incredibly nimble propulsion choice for navigating crowded anchorages and tight marina fairways.

Warranty, Support and Maintenance

Authorized recreational operation receives a 3-Year Limited Warranty alongside a 3-Year Corrosion Warranty. Registered commercial applications fall under a strict 1-Year Limited Warranty with zero corrosion coverage applied to the block. Scheduled maintenance requires replacing gearcase lubricants and checking spark plugs at manual-specified intervals. Always save all physical service records. Your engine serial number acts as the only way to source exact genuine replacement parts. Mulmotor can assist with product details and order-related questions before purchase.