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2017 Mercury 20 HP 20MLH Outboard Motor
Inspected & Documented Condition notes recorded before palletizing.
30-Day Startup Warranty Covers block, heads and internal moving components.
In Stock & Ready to Freight Outboard Motors

2017 Mercury 20 HP 20MLH Outboard Motor

Brand: Mercury
Condition: Used
$1,146.62
+ $185.00 flat-rate insured LTL freight (details)
$1,331.62 delivered to the continental US
  • Palletized and heavy shrink-wrapped for freight
  • LTL carrier delivery with optional liftgate service
  • Ships in 1–2 business days from Los Angeles, CA
  • Transit typically 3–7 business days, continental US
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Details & Inspection Notes

2017 Mercury 20 HP 20MLH Outboard Motor, Smooth, Powerful & Built for Durability!

  • The 2017 Mercury 20 HP 20MLH Outboard Motor is a powerful, fuel-efficient, and durable 4-stroke engine built for smooth acceleration, fast throttle response, and excellent low-end torque. With a large 351cc displacement powerhead, this manual start, tiller-controlled outboard delivers superior reliability and long-lasting performance for small fishing boats, skiffs, and jon boats.

    Equipped with Mercury’s multi-function tiller handle, a heavy-duty transom mounting bracket, and vibration-absorbing mounts, this 20-inch long shaft model is designed for both freshwater and saltwater use. The thru-cowl backup manual start, digital CDI ignition, and easy maintenance features ensure that this 20 HP outboard is dependable and easy to operate.

    If you need a robust and fuel-efficient outboard motor, the Mercury 20MLH is an excellent choice for smooth, reliable boating.

    Key Features & Benefits

    20 HP 4-Stroke Engine with Large Displacement (351cc)More torque & better acceleration
    Manual Start with CDI IgnitionReliable cold starts & smooth throttle response
    Tiller Handle with Integrated F-N-R Gear ShiftUser-friendly controls for easy maneuverability
    Heavy-Duty Transom Mount & Wishbone Vibration AbsorbersEnhanced stability & reduced vibration
    Thermostat-Controlled Cooling SystemMaintains optimal engine temperature
    Shallow Water Drive & Manual TiltNavigate tight or shallow waters with ease
    Quiet Through-Prop Exhaust SystemMinimizes noise for a smoother, quieter ride
    Low Oil Pressure & Over-Rev ProtectionEnsures long engine life & safe operation
    6.6-Gallon Fuel Tank & Quick Connect Fuel Line IncludedExtended run time & easy refueling
    3-Year Mercury Marine WarrantyTrusted reliability & long-lasting performance

    Technical Specifications

    Engine & Performance

    Feature Details
    Engine Type 4-Stroke, Large Displacement Powerhead
    Horsepower 20 HP
    Shaft Length 20” (Long Shaft)
    Starting System Manual Start
    Fuel System Carbureted
    Full Throttle RPM Range 5400-6100 RPM
    Displacement 351cc (21.4 cubic inches)
    Bore & Stroke 2.40 x 2.36 inches
    Cooling System Water-Cooled with Thermostat
    Fuel Type Unleaded Gasoline (87 Octane, up to 10% Ethanol)
    Fuel Tank Capacity 6.6 Gallons (Included)
    Lubrication System Trochoid Pump
    Oil Capacity 1 Quart (1000 mL), Mercury 4-Stroke Outboard Oil

    Propulsion & Control

    Feature Details
    Steering Type Tiller Handle
    Gear Shift Forward-Neutral-Reverse (Integrated in Tiller Handle)
    Gear Ratio 2.15:1
    Propeller 9.2” Diameter X 9.1” Pitch, 3-Blade Aluminum
    Trim & Tilt Manual Tilt
    Shallow Water Drive Yes
    Steering Tension Control Adjustable for Stability

    Safety & Durability

    Feature Details
    Saltwater Rated Yes, Multi-Layer Corrosion Protection
    Start-in-Gear Protection Yes
    Low Oil Pressure Warning Indicator Yes
    Overheat Warning System Yes
    Over-Rev Protection Yes, ESG System
    Safety Lanyard Stop Switch Yes

    What’s Included in the Box?

    2017 Mercury 20 HP 20MLH Outboard Motor
    6.6-Gallon External Fuel Tank & Quick Connect Fuel Line
    3-Blade Aluminum Propeller
    Mercury 4-Stroke Oil
    Owner’s Manual
    Tool Kit
    Mercury Marine 3-Year Warranty

    Note: Battery & optional alternator kit not included (alternator sold separately).

    Frequently Asked Questions (FAQ)

    Is the Mercury 20MLH suitable for saltwater use?
    Yes! It is saltwater-rated with zinc-coated water passages, sacrificial anodes, and corrosion-resistant materials.

    Does this outboard have an electric start option?
    No, this model is manual start only, but it features CDI ignition for reliable cold starts.

    What type of boats is this outboard ideal for?
    Perfect for skiffs, jon boats, small fishing boats, and saltwater applications.

    How fuel-efficient is this outboard?
    The large displacement powerhead provides better torque & fuel economy compared to smaller engines.

    Can I add an alternator for battery charging?
    Yes, the optional 12A alternator kit can be installed for battery charging and additional power needs.

    Call to Action, Order Now!

    Get smooth power, excellent fuel efficiency, and superior durability with the 2017 Mercury 20 HP 20MLH Outboard Motor. Whether you’re fishing, exploring, or cruising, this long shaft 4-stroke engine delivers unbeatable performance.

    Limited stock available, Order today for fast shipping!

Startup & Installation Checklist

  • Replace timing components, water pump and plugs before initial startup where applicable.
  • Refill all fluids with manufacturer-specified oil and coolant.
  • Verify sensors, ECU pinouts and grounds against your chassis or hull wiring.
  • Startup warranty covers heads, block and internal lubricated components for 30 days from delivery.

Full terms: 30-day startup warranty · returns

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