Mercury FourStroke 6hp 20in Long Shaft Tiller Outboard Motor
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Product Info
Product Info
Reliable power meets extended reach in the Mercury FourStroke 6hp 20" Long Shaft Tiller Outboard Motor. Perfect for sailboats, small cruisers, or tenders that require a longer shaft setup, this compact powerhouse delivers smooth, dependable performance in a lightweight 26kg frame. Designed for easy transport and mounting, it features ergonomic front and rear grips so you can lift, carry, and position it with confidence — whether you’re launching from the beach, the ramp, or a jetty.
At its heart is a robust 123cc OHV engine producing genuine 6hp output, giving you reliable thrust and responsive acceleration. Auto decompression and digital ignition systems make starting quick and consistent, while the forward-mounted F-N-R shift lever keeps gear changes simple and intuitive. The automatic reverse lock system helps prevent unwanted engine lift when backing up, improving handling and safety in tight spaces.
Mercury’s integral 1L fuel tank keeps your setup clean and compact, while the ventilated cap and external shutoff valve make it easy to run the carburettor dry before storage. For longer journeys, the included connection for an optional 12L remote tank extends your range without compromising convenience. The long tiller handle provides precise steering with integrated throttle and adjustable friction control, letting you fine-tune steering resistance for maximum comfort and control.
Equipped with six trim positions and a shallow-water drive setting, this outboard is built to handle varying depths and water conditions. The exclusive through-prop exhaust system ensures smooth, efficient operation across all speeds, while the low oil pressure warning light provides an extra layer of protection for your engine. After your trip, the freshwater flush system makes it easy to remove salt and debris, helping to extend the life of your outboard.
Built to Mercury’s proven corrosion-resistant standards and backed by a 3+3 non-declining warranty, this long shaft FourStroke offers the perfect blend of performance, portability, and durability. Whether you’re cruising calm estuaries or powering a sailboat through open water, the Mercury FourStroke 6hp Long Shaft is engineered to go the distance — wherever the adventure takes you.
Features
- Large 123cc OHV engine that delivers true 4hp power with auto decompression and digital ignition for smooth starts
- Lightweight 26kg design with ergonomic handles and rear grips for easy lifting, transport, and mounting
- Forward-mounted F-N-R shift lever with automatic reverse lock for added safety and control
- 1L integral fuel tank with vented cap, external shutoff, and optional 12L remote tank connection for extended range
- Long tiller handle with integrated throttle and friction control for precise, comfortable operation
- Six-position trim and shallow-water drive system for safe, versatile performance in any depth
- Exclusive through-prop exhaust system for smoother, more efficient operation across the rev range
- Low oil pressure warning light to protect the engine and alert the operator before damage occurs
- Freshwater flush port that makes rinsing salt and debris quick and easy after every trip
- Backed by Mercury’s 3+3=6 year non-declining warranty for lasting confidence on the water
Product Overview
Built 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
| 2.5HP SHORT SHAFT | 3.5HP SHORT SHAFT | 3.5HP LONG SHAFT | 4HP SHORT SHAFT | 5HP SHORT SHAFT | 6HP SHORT SHAFT | 6HP LONG SHAFT | |
|---|---|---|---|---|---|---|---|
| HORSE POWER | 2.5HP | 3.5HP | 3.5HP | 4HP | 5HP | 6HP | 6HP |
| SHAFT LENGTH | 15" | 15" | 20" | 15" | 15" | 15" | 20" |
| TRANSOM BRACKET TO CAVITATION PLATE MEASUREMENT | 17" 434mm | 17" 434mm | 17" 434mm | 17" 434mm | 17" 434mm | 22" 561mm | 22" 561mm |
| SUITS TRANSOM HEIGHTS | 15-17.5" 381-445mm | 15-17.5" 381-445mm | 15-17.5" 381-445mm | 15-17.5" 381-445mm | 15-17.5" 381-445mm | 19-22.5" 483-572mm | 19-22.5" 483-572mm |
| CAPACITY/CYLINDERS | 85CC / 1cyl | 85CC / 1cyl | 85CC / 1cyl | 123cc / 1cyl | 123cc / 1cyl | 123cc / 1cyl | 123cc / 1cyl |
| MAX RPM AT FULL THROTTLE | 4500-5500 | 5000-6000 | 5000-6000 | 4500-5500 | 4500-5500 | 5000-6000 | 5000-6000 |
| COOLING SYSTEM | Water-cooled with thermostat | ||||||
| STARTING | Manual | ||||||
| FUEL SYSTEM | Carburettor | ||||||
| FUEL TYPE | Regular Unleaded | ||||||
| FUEL TANK | Built-in 1L | Built-in 1L | Built-in 1L | Built-in 1.1L | Built-in 1.1L | Built-in 1.1L | Built-in 1.1L |
| GEAR RATIO | 2.15:1 | ||||||
| CONTROL & GEAR SHIFT | Tiller 360° / F-N | Tiller with side shift 360° / F-N | Tiller with side shift 360° / F-N | Tiller with side shift / F-N-R | Tiller with side shift / F-N-R | Tiller with side shift / F-N-R | Tiller with side shift / F-N-R |
| MOUNT STYLE | Thumbscrew | ||||||
| TRIM/TILT | Manual- 4 position | Manual- 4 position | Manual- 4 position | Manual- 6 position | Manual- 6 position | Manual- 6 position | Manual- 6 position |
| PROPELLOR | 3 blade aluminium | ||||||
| WEIGHT | 18kg | 18kg | 18kg | 26.3kg | 26.3kg | 26.3kg | 27.1kg |
| WARRANTY | 3+3=6 | ||||||