$3,025.00
15 HP four-stroke, 333cc inline two-cylinder engine
15″ short shaft with multi-function tiller
Electronic Fuel Injection (EFI) for reliable starts
Lightweight at 103 lbs with low-vibration mounts
3.2-gallon external fuel tank
Corrosion-resistant for freshwater/saltwater use
Manual start with decompression system
Adjustable throttle and steering tension
The Mercury 15MH is a compact, lightweight four-stroke outboard motor designed for small boats such as jon boats, skiffs, inflatables, and small fishing vessels up to 14-16 feet. Featuring a 15-inch short shaft, it weighs 103 lbs, making it one of the lightest in its 15 HP class. The 333cc (20.3 cubic inch) inline two-cylinder engine with Electronic Fuel Injection (EFI) delivers strong low-end torque for quick planing and a full throttle range of 5700-6200 RPM. Its innovative multi-function tiller handle, adjustable 18 degrees port or starboard and reversible for left- or right-hand use, offers exceptional control and comfort. The motor features a 3.2-gallon external fuel tank, a decompression system for easy manual starting, and low-vibration wishbone mounts for smooth operation. Built for durability in freshwater and saltwater, it uses low-copper aluminum alloys, stainless steel components, and a multi-layered priming and painting process for superior corrosion resistance. With reliable starting, instant throttle response, and fuel efficiency, the 15MH is ideal for worry-free boating.
| Engine | 4-stroke, SOHC | Inline 2-cylinder | 333cc / 20.3 cu in | 15 HP @ 5700-6200 RPM | EFI, 4-valve | Digital CD ignition | Water-cooled |
| Shaft | 15″ short | Corrosion-resistant | 9.2″ x 9.1″ 3-blade prop | Shallow water drive | 16° trim range | Standard rotation | Salt/freshwater rated |
| Controls | Multi-function tiller | Manual start | Adjustable throttle | 18° tiller adjustment | Steering tension control | Safety lanyard | Engine alert system |
| Charging | 12 amps / 145 watts | Low-speed charging | Regulated charging | Supports electronics | Optional alternator | Maintenance-free | No battery required |
| Weight | 103 lbs / 47 kg | Lightweight design | Balanced weight | Portable for class | Minimal drag | Easy transport | Transom mount |
| Performance | 5700-6200 RPM range | Fuel-efficient | Low emissions | High torque | Quick acceleration | Quiet operation | Top speed 20-22 mph |
| Compatibility | 14-16 ft boats | Jon boats, skiffs | Inflatables | 3.2-gal external tank | Aluminum prop | Salt/freshwater rated | Tiller steer boats |
| Dimensions | 15″ shaft length | 16.2″ W | 39.8″ H | 26.1″ L | Corrosion-resistant | Transom mount | Manual tilt |
| Engine | 4-stroke, SOHC | Inline 2-cylinder | 333cc / 20.3 cu in | 15 HP @ 5700-6200 RPM | EFI, 4-valve | Digital CD ignition | Water-cooled |
| Shaft | 15″ short | Corrosion-resistant | 9.2″ x 9.1″ 3-blade prop | Shallow water drive | 16° trim range | Standard rotation | Salt/freshwater rated |
| Controls | Multi-function tiller | Manual start | Adjustable throttle | 18° tiller adjustment | Steering tension control | Safety lanyard | Engine alert system |
| Charging | 12 amps / 145 watts | Low-speed charging | Regulated charging | Supports electronics | Optional alternator | Maintenance-free | No battery required |
| Weight | 103 lbs / 47 kg | Lightweight design | Balanced weight | Portable for class | Minimal drag | Easy transport | Transom mount |
| Performance | 5700-6200 RPM range | Fuel-efficient | Low emissions | High torque | Quick acceleration | Quiet operation | Top speed 20-22 mph |
| Compatibility | 14-16 ft boats | Jon boats, skiffs | Inflatables | 3.2-gal external tank | Aluminum prop | Salt/freshwater rated | Tiller steer boats |
| Dimensions | 15″ shaft length | 16.2″ W | 39.8″ H | 26.1″ L | Corrosion-resistant | Transom mount | Manual tilt |
High-Performance Engine: 333cc inline two-cylinder engine with EFI and a 4-valve SOHC design provides strong torque, quick acceleration, and fuel efficiency for small to medium boats.
Innovative Tiller: Multi-function tiller adjusts 18 degrees port/starboard, offers reversible throttle grip rotation, and includes a stop button for ergonomic, ambidextrous control.
Lightweight Design: At 103 lbs, it’s among the lightest 15 HP outboards, enhancing portability and reducing drag on small vessels.
Reliable Starting: EFI and decompression system ensure easy manual starts in all conditions, with instant throttle response for smooth operation.
Corrosion Resistance: Low-copper aluminum alloys, stainless steel water pump housing, zinc-coated passages, and sacrificial anodes ensure durability in harsh marine environments.
Smooth Operation: Wishbone mounts and tuned intake reduce vibration, while a through-propeller-hub exhaust minimizes noise for a comfortable ride.
Fuel Efficiency: EFI optimizes fuel delivery, paired with a 3.2-gallon external tank for extended range, using 87-octane fuel with up to 10% ethanol.
Safety Features: Engine alert system monitors low oil pressure, overheating, over-revving, and sensor failure, with a safety lanyard for emergency stops.
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Order Processing & Shipping Times
Orders are processed and shipped within 2-5 business days (excluding weekends and holidays). All items are delivered within 10 business days from the date of shipment. As your delivery date nears, the shipper will contact you to coordinate a seamless drop-off.
Before ordering, please verify your shipping address to prevent delays. Your satisfaction is our priority, and we’re committed to making your shopping experience smooth and enjoyable. Have questions? Email us at sales@go2float.com—we’re here to help!
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6 reviews for Mercury 15hp 15″ Shaft | 15MH
quiet and responsive engine that handles well in various conditions easy electric start and sturdy build quality really happy with this purchase
solid motor with good power for its class the 15″ shaft is just right for my setup a bit noisy at high throttle but overall reliable and easy to maintain
this mercury 15hp runs smooth and starts easily every time really appreciate the compact size and lightweight design perfect for my small boat
i’ve been using this mercury motor for months now and it never disappoints smooth operation and good fuel economy got it for a fair price too which made it even better
got this mercury 15hp at a great price and it’s been a solid performer smooth, reliable and easy to maintain highly recommend for anyone needing a small engine