Mercury FourStroke 9.9hp EFI 15in Short Shaft Tiller Outboard Motor
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Product Info
Product Info
Compact power and modern technology combine in the Mercury FourStroke 9.9hp EFI 15" Short Shaft Tiller Outboard Motor, delivering impressive performance in a portable, easy-handling package. Weighing just 38.4kg, this outboard is designed for effortless transport and mounting, featuring ergonomic front and rear grips that make it a breeze to move from storage to the boat ramp. Ideal for small fishing boats, inflatables, and runabouts, it’s a go-anywhere motor built for adventure.
The 209cc twin-cylinder engine is engineered for strength and efficiency, providing powerful low-end torque that gets your boat on plane quickly and maintains smooth, steady performance. The electronic fuel injection (EFI) system takes efficiency to a new level, automatically adjusting the air/fuel mix and ignition timing to suit temperature, altitude, and load conditions — no choke or priming required. This advanced setup not only improves throttle response and cold starts but also delivers up to 27% better fuel economy compared to previous models.
Control is intuitive and comfortable thanks to Mercury’s exclusive multi-function tiller handle, designed for one-handed operation. You can shift gears, control throttle, and adjust tilt or trim all from the handle, while built-in safety features like a stop button and lanyard keep you in control at all times. The ratcheting manual tilt clamp bracket allows six trim positions, full tilt lock, automatic angle reset, and memory locks, so adjusting your outboard to match your conditions is quick and easy.
Mercury’s precision-engineered aluminum-silicon alloys and advanced coating process offer class-leading corrosion resistance, ensuring long-term durability even in harsh marine environments. The built-in low oil pressure warning and over-rev protection systems add peace of mind by preventing damage and alerting you to potential issues before they become costly.
Lightweight, reliable, and refined, the Mercury FourStroke 9.9hp EFI Short Shaft delivers everything you need for small-boat performance — quick acceleration, smooth running, and unbeatable efficiency. Backed by Mercury’s 3+3 non-declining warranty, this is portable power you can depend on season after season, wherever your adventures take you.
Features
- Compact 209cc twin-cylinder powerhead provides strong low-end torque and quick throttle response
- Battery-free manual start EFI system automatically adjusts air/fuel mix and timing for optimal performance
- EFI system delivers faster acceleration from 0–15 mph and slightly higher top speed for enhanced performance
- Up to 27% improved fuel economy compared to previous models for longer run times and lower operating costs
- Lightweight 38.4kg design with ergonomic handles and rear grips for easy transport and mounting
- Exclusive ratcheting manual tilt clamp bracket with six trim positions, full tilt lock, and memory locks for secure adjustment
- Multi-function tiller handle for one-handed gear shifting, throttle control, tilt, and trim adjustments
- Advanced corrosion resistance with Mercury’s aluminum-silicon alloys and industry-leading coating process
- Built-in low oil pressure warning and over-rev protection to safeguard the engine and alert the operator
- Backed by Mercury’s 3+3=6 year non-declining warranty for lasting confidence on the water
Product Overview
From the second you hit the start to the moment you open it right up, EFI on Mercury outboards dishes out instant, reliable power. Cold mornings, hot arvos — doesn’t matter. You get smooth starts, crisp acceleration, and a whole lot of fun every time you hit the throttle.
Battery-free EFIHead out without lugging around a cranking battery. Battery-free EFI on manual-start models gives you confident, reliable starting and the freedom to stay lightweight and portable — perfect for exploring new water.
Corrosion ResistanceBuilt to take on the harshest marine conditions, Mercury FourStroke outboards come armed with corrosion-fighting tech from top to bottom. We’re talking advanced alloys, tough-as-nails protective coatings, sealed electronics to keep the nasties out, and an easy freshwater flush system to rinse everything clean after a big day on the water. Premium protection that keeps your motor running stronger for longer.
Advanced tillerSet it up your way. Mercury’s adjustable tiller puts all the controls right where you need them, with options for left- or right-handed operation on select models. Comfortable, natural steering that keeps you in charge of every adventure.
Easy portabilityLightweight, simple to mount, and built for fun. Mercury’s 2.5–20hp four-stroke range lets you take the good times anywhere — from the tinny on the river to the tender behind the cruiser.
Convenient MaintenanceMercury makes the upkeep easy as. A no-spill oil change system, easy-out fuel filter, and a lifetime maintenance-free valve train all help keep you on the water longer and out of the shed.
Mercury 3 + 3 = 6 year warranty
When you purchase a brand-new Mercury Outboard from an authorised dealer, you’re covered by a massive 3+3 year warranty. That includes a bonus extra 3 years, factory-backed, with the same comprehensive coverage as Mercury’s standard 3-year manufacturer’s warranty — labour excluded — for any failures caused by defects in materials or workmanship. And good news: if you pass the motor on, any unexpired warranty can be transferred to the next owner as long as the product is properly re-registered.
Bonus Warranty Conditions
- The dealer must complete and document the official Mercury Marine pre-delivery inspection. Warranty only kicks in once the dealer has correctly registered your outboard.
- All servicing, maintenance, and repairs must be carried out by a factory-authorised Mercury dealer, and logged with Mercury.
- Stick to the recommended service intervals and maintenance schedule from the date of purchase.
- Only use genuine Mercury parts, oils, and lubricants.
- Make sure each service is recorded in your logbook and registered online by your authorised dealer.
Maintenance Schedule
First 3 Month Inspection3 months from date of sale or 20 hours for use - whichever occurs first. This post sale inspection will ensure everything is operating as required on your new engine. Even if your engine has only been used for a few hours, it is important to get this inspection done by the due date.
Annual InspectionOnce a year or every 100 hours of use - whichever occurs first.
Tech Spec
| 9.9HP SHORT SHAFT | 9.9HP LONG SHAFT | 15HP SHORT SHAFT | 15HP LONG SHAFT | 20HP SHORT SHAFT | 20HP LONG SHAFT | |
|---|---|---|---|---|---|---|
| HORSE POWER | 9.9HP | 3.5HP | 3.5HP | 3.5HP | 4HP | 5HP |
| SHAFT LENGTH | 15" | 20" | 15" | 20" | 15" | 20" |
| TRANSOM BRACKET TO CAVITATION PLATE MEASUREMENT | 17" 434mm | 22" 561mm | 16" 413mm | 22" 561mm | 16" 413mm | 22" 561mm |
| SUITS TRANSOM HEIGHTS | 15-17.5" 381-445mm | 19-22.5" 483-572mm | 15-17.5" 381-445mm | 19-22.5" 483-572mm | 15-17.5" 381-445mm | 19-22.5" 483-572mm |
| CAPACITY/CYLINDERS | 209CC / 2cyl | 209CC / 2cyl | 333CC / 2cyl | 333CC / 2cyl | 333CC / 2cyl | 333CC / 2cyl |
| MAX RPM AT FULL THROTTLE | 5000-6000 | 5000-6000 | 5700-6200 | 5700-6200 | 5700-6200 | 5700-6200 |
| COOLING SYSTEM | Water-cooled with thermostat | |||||
| STARTING | Manual | |||||
| FUEL SYSTEM | Electronic Fuel Injection (EFI) | |||||
| FUEL TYPE | Regular Unleaded | |||||
| FUEL TANK | External 12L | |||||
| GEAR RATIO | 2.08:1 | 2.08:1 | 2.15:1 | 2.15:1 | 2.15:1 | 2.15:1 |
| CONTROL & GEAR SHIFT | Tiller with shift in handle / F-N-R | |||||
| MOUNT STYLE | Thumbscrew | |||||
| TRIM/TILT | Manual- 5 position | Manual- 5 position | Manual- 5 position | Manual- 6 position | Manual- 6 position | Manual- 6 position |
| PROPELLOR | 3 blade aluminium | |||||
| WEIGHT | 38.1kg | 38.1kg | 45kg | 46.7kg | 46.7kg | 48.5kg |
| WARRANTY | 3+3=6 | |||||