2000-2006 Yamaha TT-R 90(S) / TT-R 90E(S) Repair Manual

Yamaha TT-R 90/TT-R 90E Service Scope

• Covers 2000–2006 Yamaha TT-R 90(S) and TT-R 90E(S) trail motorcycles with air-cooled 4-stroke engines
• Official Yamaha publication P/N 5HN-28199-84, 1st edition March 2003
• Documents technical data for engine, chassis, and electrical systems across six distinct chapters
• Includes 12 electrical schematics, 14 exploded-view diagrams, and comprehensive torque-specification tables
• Accessible from your device as soon as the order is placed
• Laid out for standard letter and A4 printing
• This 2003 first edition serves as the original documentation for the full 2000–2006 production run of the 5HN-series motorbikes

Operational and Maintenance Documentation

The 2000–2006 Yamaha TT-R 90 service manual provides technical oversight of the 89cc power plant and 3-speed constant-mesh transmission. Chapters detail the mechanical configuration of the single-cylinder engine, including valve clearances, piston specifications, and ignition timing. The chassis section addresses maintenance for the telescopic front fork and swingarm rear suspension, alongside drum brake systems and spoke wheel adjustments. Electrical system documentation includes CDI magneto output values, starter motor coil resistance, and fuse ratings for the electric start variants.

Engine and Chassis Specification Preview

Specifications for the 2000–2006 Yamaha TT-R 90 include engine oil capacity documented at 0.8 liters for periodic changes. Cylinder head warp limits are specified at 0.03 mm in the engine maintenance table. The chain slack is documented at 40–53 mm for the standard drive chain setup. Tightening torque values are provided for every major fastener, such as the cylinder head nut at 22 Nm and the rear wheel axle nut at 60 Nm. Reference factory workshop documentation for additional details on component wear limits and clearances.

All service data shown here is for reference only — qualified technicians and the original OEM documentation remain the authoritative source for any hands-on work. This official 100-page Yamaha OEM workshop manual covers the 2000–2006 TT-R 90/TT-R 90E, documenting engine, chassis, electrical, and specification data for the 5HN-series build.