Mercury 4 HP Outboard Motor | 15 Inch Short Shaft F4MH
The Mercury 4 HP FourStroke F4MH is a single-cylinder marine engine with a 123cc displacement. This unit utilizes a carbureted fuel delivery system and a 2.15:1 gear ratio to provide consistent torque for small vessels. The engine features a manual recoil start and tiller steering for direct operator control. It includes an internal fuel tank with an additional connection point for an external fuel source. Weighing approximately 57 pounds, this outboard is designed for portability and ease of mounting on transom-style hulls. The four-stroke design meets standard emission requirements and operates within a wide open throttle range of 4500 to 5500 RPM. This model is suitable for inflatable boats, small tenders, and square-stern canoes requiring a 15-inch shaft length.
Used. Sold as a used unit. The original factory warranty has expired or is non-transferable — any remaining coverage is only as stated in writing on your invoice.
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- No factory warrantySee condition & warranty above
- Crated FreightDamage claim assistance
- Free LTL ShippingContiguous U.S.
Match your transom height. Measured top of transom to keel.
Smart Compatibility Checker
Enter your transom measurement and the USCG max-HP plate rating from your hull.
Every spec, no calls required
- Horsepower
- 4 HP
- Stroke
- 4-Stroke
- Displacement
- 123 cc
- Cylinders
- 1
- Operating RPM Range
- 4500-5500
- Gear Ratio
- 2.15:1
What's in the Crate
Each engine ships on a reinforced LTL pallet. Crated weight approx. 152 lb.
- Powerhead with factory-sealed cowling and cylinder cover
- Mounting hardware kit — Clamp-on
- Integrated power trim/tilt assembly (pre-charged)
- Owner's manual, warranty registration card, and rigging diagrams
- Anode set installed (saltwater-grade zinc/aluminum)
- Propeller (sold separately — see compatible diameters in specs)
- Throttle/shift controls, harness, and key switch
- Rigging gauges (tach, fuel, trim) and digital display
- Battery, battery cables, and isolator
- Steering helm, hoses, and hydraulic fluid
Freight & Transit Estimator
LTL liftgate delivery to the lower 48. Carrier calls to schedule a 4-hour window.
- Crated weight
- 152 lb
- Crate dims
- 60" × 32" × 42"
- Carrier class
- LTL Class 85
- Signature
- Required at delivery
Compatibility & Rigging FAQ
Mechanical and electrical facts for your rigger. Specifications follow ABYC and OEM service standards.
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