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2025 Mercury 9.9 HP 9.9MH EFI Outboard Motor

SKU: 9.9MH-25
(6)
$2,785.00 $3,060.00

BRAND NEW ELECTRONIC FUEL INJECTION!  The new portable Mercury 9.9hp EFI outboard motor is lightweight, compact, and powerful making it a great choice for long shaft jon boats, skiffs, and small pontoons as well as auxiliary power for your sailboat. The Mercury 9.9 HP outboard engine is a two cylinder four-stroke marine engine that delivers smooth, quiet, fuel efficient power. Weighing 84 lbs., the Mercury 9.9 HP Outboard Model # 9.9MH comes equipped with a manual start and 15 inch short shaft, tiller steering and auto ratchet manual tilt. As with all new Mercury outboard motors, the factory provides a 3 year warranty that starts on the date of purchase.

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CA Customers Warning: Cancer and Reproductive Harm www.P65Warnings.ca.gov

SHAFT LENGTH GUIDELINES

Horsepower 9.9hp
Weight: 84.0 lb
Shaft Length: 15" (Short)
Starting:Manual
Fuel Delivery:EFI
Steering:Tiller
Features
  • Compact and Lightweight
  • Digital CD Ignition with Spark Advance
  • High Grade Marine Alloy Construction
  • Stainless Steel Water Pump Housing
  • Zinc Coated Water Passages
  • Rated for Saltwater Use
  • Sacrificial Zinc Anodes and Trim Tab
  • Tiller Integrated F-N-R Gear Shifting
  • Adjustable Steering Tension Control
  • Twist-Grip Throttle with Tension Control
  • Thermostat Controlled Water Cooling
  • Auto Ratchet Trim System (5 positions)
  • Shallow Water Drive
  • Quiet Through-Propeller-Hub Exhaust
  • 3.2 Gallon Fuel Tank and Fuel Line
  • Start-In-Gear Protection
  • Low Oil Pressure Warning Indicator
  • ESG Over-Rev Protection
  • Safety Lanyard Stop Switch
  • Owner's Manual
  • Mercury Marine 3-Year Warranty

specifications
MODEL1A10201LK
MODEL YEAR2025
SKU9.9MH-25
WEIGHT84.0 lb
MANUFACTURERMercury
COUNTRY OF MANUFACTUREJapan
HORSEPOWER9.9hp
SHAFT LENGTH15" (Short)
STEERINGTiller
STARTINGManual
TRIM & TILTManual
FUEL DELIVERYEFI
FUEL TANKExternal
CYLINDER(S)2
DISPLACEMENT12.8 ci (208 cc)
BORE AND STROKE2.16 x 1.73 in. (55 x 44 mm)
FULL THROTTLE RPM RANGE5,000 - 6,000
IGNITION SYSTEMCDI with electronic spark advance
INDUCTION SCAVENGINGSOHC
VALVES PER CYLINDER2
FUEL TYPE87 Octane (up to 10% ethanol content)
FUEL TANK / FUEL LINE3.2 Gal. Fuel Tank + Quick Connect Fuel Line
OIL TYPESAE 10W-30 (Mercury 4-Stroke Outboard Oil)
OIL CAPACITY27 fl. Oz. (800 ml)
LUBRICATIONTrochoid Pump
ALTERNATOROptional 12V 76W 6A (installation required)
COOLING SYSTEMWater-cooled with thermostat
SALTWATER RATEDYes
GEAR RATIO2.08:1
GEAR SHIFTForward-Neutral-Reverse (shift in tiller handle)
PROPELLER8.5" Diameter X 8.0" Pitch 3-Blade Aluminum

In the Box
  • Fuel Tank (3.2 gallon)
  • Quick Connect Fuel Line
  • Mercury 3-Year Warranty
  • Aluminum Propeller
  • Mercury 4-Stroke Oil
  • Owner's Manual & Tool Kit

Shaft Length Guidelines

Outboard Accessories: 
Gear Up Your Boat