2004 Yamaha 115HP Twin Outboard Motors Matched Pair 25″ Shaft Standard Counter F115

£5,500.00

Down Payment: £1500

SKU: YAM-2004-F115-PAIR

Finding a perfectly matched dual-engine package with low hours is incredibly rare on the pre-owned market. This turnkey pair of 2004 Yamaha 115HP Four-Stroke Outboard Motors is clean, meticulously inspected, and completely ready to rock!

Ideally configured for offshore center consoles, catamarans, or large pontoon boats requiring a dual-engine setup, these legendary inline-four workhorses have logged only 388 original hours on both powerheads. They feature an ultra-efficient Electronic Fuel Injection (EFI) system, meaning you get instantaneous turn-key starting, smooth idling, and exceptional fuel economy without the smoky hassle of old two-strokes.

Twin Configuration Specs & Inclusions

This package is 100% complete. We aren’t just selling you the bare iron—this is a complete rigging kit that saves you thousands of dollars in secondary parts sourcing:

  • Counter-Rotation Pair: Includes one standard rotation and one counter-rotation motor. This counter-rotational dynamic eliminates propeller torque steer, allowing your hull to track straight, ride level, and handle beautifully in rough offshore swells.

  • 25″ Extra-Long Shafts: Designed perfectly for deep-V offshore transoms and multi-engine brackets.

  • Rigging Accessories Included: Comes complete with the dual dual-action shifter control box, matching propellers, the main wiring harness, and the dual key switch panel.

Technical Specifications

Parameter Specification (Per Motor)
Year / Manufacturer 2004 Yamaha
Horsepower 115 HP
Engine Type Four-Stroke / Inline 4-Cylinder SOHC
Fuel Delivery Electronic Fuel Injection (EFI)
Shaft Length 25 Inches (Extra-Long Shaft)
Rotation 1 Standard (Right Hand) / 1 Counter (Left Hand)
Total Engine Hours 388 Hours (Both Engines Verified)
Controls Included Dual Shifter Box, Harness, Key Switches & Props
Condition Clean, Fully Inspected, Tested & Ready to Run

 

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Yamaha 115HP Twin Outboard Motors Matched Pair 25″ Shaft Standard Counter F115

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Peak summer boating seasons require dependable mechanical systems that start up instantly every single weekend. Therefore, stocking original Yamaha Outboard Engine Spares shields your primary marine investment against sudden operational breakdowns. Since specialized water pump impellers maintain safe operating temperatures, swapping them annually prevents catastrophic block overheating. Additionally, evaluating your local Yamaha Outboard Dealers Near Me ensures you have rapid access to critical emergency hardware. Thus, your recreational or commercial boating enterprise avoids costly seasonal delays during busy harbor transport schedules.

Protecting Your Complex Fuel Systems

Indeed, the latest Yamaha Outboards feature incredibly sophisticated electronic fuel injection modules that demand absolute purity. Because contaminated fuel causes immediate engine stuttering, replacing your primary water-separating fuel filters is an absolute necessity. Moreover, high-grade filtration seals prevent microscopic debris from entering the high-pressure fuel lines of your Yamaha Boat Outboard. Therefore, your motor maintains smooth acceleration curves despite varying seasonal fuel qualities at local marinas.

Optimizing Lower Unit Gear Longevity

Meanwhile, marine lower units experience immense physical stress while transferring engine torque directly to the propeller. Fortunately, changing your lower unit gear lubricant regularly keeps your Yamaha Boat Outboard running smoothly under heavy loads. This basic maintenance routine completely eliminates internal friction wear within the complex lower gear case housing. Consequently, keeping extra Yamaha Outboard Engine Spares on hand ensures you finish these vital oil changes on time.

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Essential Electrical Circuit Maintenance

Specifically, checking your marine spark plugs ensures complete fuel combustion inside every single engine cylinder. Consequently, replacing old plugs with original Yamaha Outboard Engine Spares eliminates rough idling issues during low-speed harbor docking. The internal ignition computer relies on steady voltage signals to manage timing across all power bands perfectly. Therefore, updating your Yamaha Boat Outboard electronics guarantees predictable performance during rapid throttle adjustments.

Practical Steps for Successful Seasonal Storage Routine

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Simple DIY Cooling Flush Operations

Ultimately, flushing out salt deposits after every weekend excursion prolongs the operational lifespan of your internal cooling passages. Also, hooking up a standard freshwater hose to your Yamaha Boat Outboard clears out abrasive sand grains completely. Because this simple maintenance action prevents internal salt crystallization, cooling water flows freely through the entire engine block. Therefore, investing a few minutes in basic cleaning routines yields massive financial savings on major workshop repair bills.

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