The Yamaha Outboard Service Manual - F150C / LF150C (LIT-18616-04-25) provides complete maintenance, troubleshooting, and repair procedures for Yamaha's reliable 150-horsepower inline-four outboards. This genuine Yamaha publication is the same comprehensive guide used by authorized service technicians, ensuring accuracy, clarity, and step-by-step instructions for all key systems.. Each manual includes detailed coverage of:. Engine mechanical systems and overhaul procedures. Fuel injection and ignition system diagnostics. Cooling, lubrication, and electrical schematics. Power trim and tilt servicing. Wiring diagrams and torque specifications. Whether you're performing a simple oil change or a complete rebuild, this manual gives you the confidence to do the job right - with genuine Yamaha procedures and specifications.. Models Covered:. F150C. LF150C. F150JC. F150LC. F150LC2. F150XC. F150XC2. LF150XC. LF150XC2. Part Number: LIT-18616-04-25