2005 Yamaha MT-01(T) Service Manual (P/N 5YU1-AE1)

This official 435-page Yamaha OEM workshop manual provides the comprehensive data you need to maintain and repair the 2005 Yamaha MT-01(T). This high-resolution PDF reference gives you immediate access to complex electrical data and fuel-injection system calibration parameters. Having this native digital file on your shop tablet allows you to zoom in on intricate connector pinouts right at the workbench, streamlining your diagnostic workflow and ensuring every task meets factory standards.

Working on a 1670cc V-twin requires precision and a strict adherence to factory safety standards. Always verify equipment load limits and secure the motorcycle properly before starting any heavy chassis or suspension teardowns. This document serves as your primary technical reference for the 5YU1-AE1 launch build, ensuring every assembly aligns with Yamaha's original engineering tolerances.

When servicing the MT-01, mechanics must navigate highly specific model characteristics to prevent costly component damage. For example, the connecting rod bolts are angle-controlled; if they are accidentally tightened beyond their specified 120°–150° yield angle, they must be discarded and replaced, as loosening and retightening will cause them to fail. Furthermore, the factory immobilizer system demands extreme care—losing the red code re-registering key permanently disables the ability to program new standard keys, requiring a complete, expensive replacement of the ECU and main switch.

• Covers 2005 Yamaha MT-01(T) models, detailing factory specifications for the 1670 cc V-twin power plant.
• Official Yamaha publication (P/N 5YU1-AE1, first edition December 2004).
• Contains 435 pages of comprehensive exploded-view diagrams, torque tables, wiring schematics, and component illustrations.
• Details five critical MT-01 subsystems: the EXUP servo motor, ISC unit, decompression solenoid, muffler cooling fan, and immobilizer system.
• Features essential visual aids including circuit diagrams, engine oil lubrication charts, self-diagnostic function tables, and precise cable routing views.

Content Walkthrough & Workshop Utility

This manual is divided into eight primary sections designed for real-world workshop flow. The content kicks off with a thorough introduction to the FI system and vehicle identification procedures. From there, it transitions straight into detailed engine and chassis specifications, clearly outlining maximum wear limits and acceptable clearance ranges.

To help you bypass premium dealership labor rates, the text outlines critical step-by-step instructions for tasks like synchronizing the twin throttle bodies, adjusting the EXUP cables, bleeding the hydraulic clutch, and registering new immobilizer keys. Extensive troubleshooting chapters systematically isolate faults within the starting, charging, and signaling circuits. The maintenance sections map out all periodic checks for the valve train, transmission, and braking systems. Specific cable routing guides, lubrication diagrams, and lists of specialized tools help you meet factory standards during complex assemblies and routine service alike.

Key Specification Highlights

This reference guide documents vital technical data for critical engine and chassis components, allowing you to set things right the first time:

• Compression ratio: 8.40:1
• Drive sprocket nut torque: 95 Nm
• Valve clearances (cold): 0.00–0.04 mm (intake and exhaust)
• Fuel pump output pressure: 392.0 kPa
• Front fork oil capacity: 583.0 cm³ per leg