Mercury 115 HP 4-Stroke 2014–2021 Service Repair Manual – PDF Download

🛠️ Mercury 115 HP 4-Stroke 2014–2021 Service Repair Manual – PDF Download

🧰 OEM Factory Workshop Manual – Covers Mercury 115 HP Four Stroke Outboards (2.1L platform, Serial No. 1B366823 and above)
📲 Instant PDF Download – Compatible with Windows, macOS, iOS, Android, and Linux
🔧 Used by professional marine technicians and Mercury-authorized service centers

🔍 Model Background

The Mercury 115 HP Four Stroke outboard (2014–2021) was built on Mercury’s in-house 2.1L inline-4 platform, offering a dramatic improvement over previous generations in terms of power-to-weight ratio, reliability, and fuel efficiency. At just 359 lbs, this model was one of the lightest 115 HP four-strokes in its class — nearly 20 pounds lighter than the previous version and many of its competitors.

Designed for a wide range of boats — including pontoons, bay boats, aluminum fishing rigs, and small center consoles — the 115 Four Stroke delivered excellent midrange torque, quiet operation, and class-leading fuel economy. It featured multi-port EFI, dual overhead cams (DOHC), and a maintenance-free valve train, making it both efficient and easy to own.

This model supported both mechanical and Digital Throttle & Shift (DTS) configurations and was compatible with Mercury’s SmartCraft digital gauges. It earned widespread praise for its clean design, ease of servicing, and excellent reliability record. Between 2014 and 2021, the Mercury 115 Four Stroke became one of the most trusted mid-horsepower outboards on the market.

📆 Model Years Covered:

• Mercury 115 HP Four Stroke – 2014
• Mercury 115 HP Four Stroke – 2015
• Mercury 115 HP Four Stroke – 2016
• Mercury 115 HP Four Stroke – 2017
• Mercury 115 HP Four Stroke – 2018
• Mercury 115 HP Four Stroke – 2019
• Mercury 115 HP Four Stroke – 2020
• Mercury 115 HP Four Stroke – 2021

📘 Manual Details:

• Model: Mercury 115 HP Four Stroke (2.1L)
• Serial Numbers: 1B366823 and up
• Engine Type: EFI, 4-Stroke, Inline 4-cylinder
• Document Type: OEM Service & Repair Manual
• Language: English
• Publisher: Mercury Marine
• Pages: 600+ with diagrams, schematics, and procedures

📚 Manual Sections Include:

• General Information & Specifications
• Ignition & Charging System
• Flywheel, stator, trigger, voltage regulator, coils
• Fuel System
• Electronic Fuel Injection (EFI), carburetors, primer bulb, link & sync
• Powerhead
• Valve clearance, cylinder head, pistons, camshaft, crankshaft
• Cooling System
• Thermostat, water pump, passages, impeller replacement
• Midsection & Exhaust
• Mount brackets, exhaust housing, vibration isolators
• Gearcase Assembly
• Shift rod, propshaft, gear set, seals, water pickup
• Control Linkage & Adjustment
• Throttle and shift cables, idle RPM adjustment
• Wiring Diagrams
• Full schematics with component locations and color coding

💾 Format & Compatibility:

• File Format: PDF
• Searchable & Bookmarked: ✅ Yes
• Printable: ✅ Yes – Entire manual or specific chapters
• Compatible With: Windows, macOS, iOS, Android, Linux
• Delivery: 📩 Instant Digital Download

🔍 Keywords:

Mercury 115 HP 4-Stroke service manual PDF, 2014–2021 outboard repair guide, EFI fuel system, gearcase, wiring diagrams, OEM maintenance

❓ Mini FAQ:

Q: Is this the official Mercury manual?
A: Yes – this is the original OEM manual used by Mercury technicians and dealers worldwide.

Q: Are EFI and wiring systems fully covered?
A: Absolutely – this manual includes EFI fuel diagnostics and complete wiring diagrams.

Q: Can I download and use it right away?
A: Yes – instant access. The PDF works on any modern device with a PDF reader.

🧭 Helpful Resources for Mercury Outboard Owners

• Why Every Mercury Mariner Owner Needs a Service Manual for At-Home Repairs – Learn how a digital service manual can save you time and money on common DIY maintenance tasks.
• Outboard Engine Troubleshooter – Not sure what’s wrong with your engine? Our free troubleshooting guide covers common issues across Mercury Outboards and more.

🔧 Browse More Mercury Manuals

Note: While our manuals are designed for DIY use, they do not replace professional mechanical training. If you're unsure about a repair or your engine shows serious issues, we strongly recommend visiting a certified marine mechanic. These guides are best suited for owners with basic to moderate mechanical experience.