Mercury 115HP F115 4-Stroke XL Shaft Outboard Motor F115EXLPT CT EFI

Mercury 115HP F115 4-Stroke XL Shaft Outboard Motor F115EXLPT CT EFI

Mercury 115HP F115 4-Stroke XL Shaft Outboard Motor F115EXLPT CT EFI are a lightweight, high-displacement marine engine known for its power-to-weight ratio, fuel efficiency, and quiet operation. The "EXLPT CT" designation indicates it has an Electric start, an XL (Extra Long, 25-inch/635 mm) shaft, Power Trim, and the Command Thrust gearcase.

Mercury 115HP F115 4-Stroke XL Shaft Outboard Motor F115EXLPT CT EFI Key Features

• Command Thrust (CT) Gearcase: This model features a larger, heavy-duty gearcase that can accommodate a larger propeller, providing improved thrust, acceleration (hole shot), and better handling, especially for larger or heavier boats, such as deck boats, rigid inflatables, or fish & ski boats.
• High Displacement, Low Weight: The 2.1-liter, inline 4-cylinder engine is designed to be the lightest in its power range (at 165 kg or 364 lbs for the CT model), allowing it to work smarter, not harder, which improves durability, longevity, and fuel economy.
• Electronic Fuel Injection (EFI): A computer-controlled multi-port EFI system ensures easy starting, smooth and reliable operation (hot or cold), and optimal fuel efficiency across all speeds.
• SmartCraft® Technology: The engine is compatible with Mercury's full suite of digital technologies, which provides real-time monitoring of engine functions through the SmartCraft Engine Guardian warning system.
• Quiet & Smooth Operation: Features an Idle-Relief Muffler and a Focused Mount System that minimize sound and vibration for a more enjoyable boating experience. 

Mercury 115HP F115 4-Stroke XL Shaft Outboard Motor F115EXLPT CT EFI FAQs

• What does F115EXLPT CT EFI mean?
  • F: Four-stroke.
  • 115: Horsepower.
  • E: Electric start.
  • XL: Extra-long shaft (25 inches / 635 mm), suitable for boats with a transom height of around 25 inches.
  • PT: Power Trim and Tilt.
  • CT: Command Thrust gearcase, which uses a larger diameter propeller to provide more thrust, better acceleration, and improved handling, especially for heavier boats.
  • EFI: Electronic Fuel Injection.
• What type of boats is this motor designed for? It is suitable for a wide range of boats from 14' to 23' in a single-engine application, including deck boats, inshore fishing boats, pontoons, and rigid hull inflatables.
• Is it compatible with SmartCraft technology? Yes, it is compatible with SmartCraft digital technologies, which provide integrated engine data and a full suite of monitoring systems, including the Engine Guardian system.
• What is the dry weight? The CT model has a dry weight of approximately 165 kg (364 lbs).
• Can I run the engine out of the water? No, never start or run an outboard without water circulating through the cooling water intake in the gear case, as it will damage the water pump and cause the engine to overheat.
• What is the recommended fuel and oil?
  • Fuel: Unleaded regular 87 octane minimum (90 RON 10% ethanol maximum).
  • Oil: Mercury FourStroke Oil 10W-30 (NMMA Certified FCW SAE 10W-30).
• How often should I change the spark plugs and oil?
  • Engine oil: Typically every 100 hours or at least once a year.
  • Gear oil: Typically every 100 hours or at least once a year. Check the drained oil for a milky color, which indicates water contamination.
  • Spark plugs: Every 300 hours or every 3 years, whichever comes first.
• How should I "break in" a new engine? For the first two hours of operation, run the motor at varied throttle settings up to 4500 rpm. For the next eight hours, you can run it normally, but avoid running at wide-open throttle for more than five minutes at a time.