Yamaha Outboard 25B 2-Stroke 2006–2009 Service Repair Manual

🛠️ Yamaha Outboard 25B 2-Stroke 2006–2009 Service Repair Manual – PDF Download

🔧 This official Yamaha factory service manual provides detailed maintenance and repair procedures for the 25B 2-stroke outboard engine. Designed for technicians and DIY boat owners, this manual includes step-by-step instructions, diagrams, and specifications for all major systems.

📲 Instant PDF Download – Fully searchable and printable. Access it on your phone, tablet, or computer anytime.

📖 Model Background

The Yamaha 25B 2‑stroke outboard was produced from 2006 through about 2009 as part of Yamaha’s Enduro/portable series. Featuring a loop-charged twin-cylinder engine with CDI ignition and carburetor fuel system, it delivers a reliable 25 HP at around 5,000 RPM. Weighing approximately 53–57 kg (117–126 lb) depending on shaft and start configuration, the 25B offered tiller or remote steering options and manual or electric start. Its straightforward oil-injection system and low-noise labyrinth exhaust made it a favorite for recreational anglers and inflatable boat users seeking dependable power in a lightweight package.

📄 Manual Details:

• Engine Type: 2-Stroke, 2-Cylinder
• Fuel System: Carbureted
• Ignition System: CDI
• Cooling System: Thermostatic water cooling
• Starting System: Manual or electric (varies by model)
• Lubrication: Pre-mix fuel/oil system
• Years Covered: 2006–2009
• File Format: PDF (searchable & printable)
• Total Pages: 240+ pages

📆 Model Years Covered:

• Yamaha Outboard 25B 2-Stroke 2006
• Yamaha Outboard 25B 2-Stroke 2007
• Yamaha Outboard 25B 2-Stroke 2008
• Yamaha Outboard 25B 2-Stroke 2009

🔧 Manual Sections Include:

• General Information
• Model codes, safety info, torque specs
• Powerhead
• Piston and crankshaft inspection, engine teardown
• Fuel System
• Carburetor cleaning, fuel pump servicing
• Ignition System
• CDI unit specs, ignition timing, spark testing
• Cooling System
• Thermostat service, water pump replacement
• Lower Unit
• Gearcase removal, propeller shaft and seals
• Electrical System
• Kill switch, charging coil, lighting coil wiring
• Troubleshooting
• Engine no-starts, fuel problems, overheating

💾 Format & Features:

• File Type: PDF
• Searchable: ✅ Yes
• Printable: ✅ Yes – Full or partial print
• Device Compatibility: Windows, Mac, iOS, Android, Linux

🔍 Keywords:

Yamaha 25B repair manual, 2-stroke outboard PDF, 2006 2007 2008 2009, CDI ignition, marine service manual, carburetor repair, water cooling system, lower unit repair

❓ Mini FAQ:

Q: Is this a genuine Yamaha manual?
A: Yes – it’s the same factory manual used by certified Yamaha marine technicians.

Q: Can I do a full engine rebuild with this?
A: Absolutely. The manual covers complete disassembly, reassembly, and testing.

Q: Is it mobile compatible?
A: Yes – fully viewable and searchable on phones and tablets.

🧭 Helpful Resources for Yamaha Outboard Owners

• Why Every Yamaha Outboard Owner Should Own a Service Manual – Find out how a downloadable repair manual can simplify maintenance and help you troubleshoot common problems on your own.
• Outboard Engine Troubleshooter – Not sure what’s wrong with your Yamaha engine? Our free tool lists common issues and DIY fixes across all major brands.

🔧 Browse More Yamaha 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.