2000 Yamaha XN125 / XN150 Scooter Service Manual (P/N 5MF1-AE2)

• Covers 2000–2001 Yamaha XN125 and XN150 scooter models, including 5MF1-AE2 variants
• Original OEM publication 5MF1-AE2 (2nd edition, April 2001)
• 259 pages detailing technical specifications, maintenance schedules, and mechanical system diagrams
• Primary reference for the 5MF1-AE2 engine build and XN-series chassis configurations

Technical Content and Structure

This service manual breaks down the drivetrain, chassis, and electrical systems of the Teos series. Mechanics will find exact procedures for engine overhauls, cooling system maintenance, and carburetor calibration. It strips away the guesswork on the bench. You get explicit tightening torque values for every major fastener alongside complete fluid capacities for the engine and coolant circuits. Electrical reference values for ignition and charging components are also mapped out clearly. Safety always dictates the workflow in any shop, so ensure you cross-reference all documented values and handle hazardous fluids or high-voltage components with standard workshop precautions before starting a job.

Specification Highlights

The documentation logs engine compression pressure at 1,400 kPa (14.00 kg/cm²) for both displacement versions. Intake valve clearance sits strictly between 0.10 and 0.14 mm. For the cooling circuit, radiator capacity requires exactly 1.1 liters. Beyond raw numbers, the guide provides extensive cable routing diagrams and standard fastener torque charts. Diagnostic symbols for electrical and mechanical adjustments help speed up troubleshooting on the lift.