2000-2007 Yamaha TT-R90(N) Owner's Service Manual

Complete service data for carburetor, engine, transmission, clutch, electrical, chassis, and brake systems. Essential troubleshooting and maintenance guide for trail bike restoration.

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Document Details

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Document Number / Seller:
24330 / Donna Reyes
File Size:
15.40 MB
File Type:
PDF
Language:
English, French, German
Printable:
Yes
Estimated Download Time:
0.32 Minutes
Delivery Format:
Digital (PDF) - Instant Access
Category:
Minibike
Brand:
Yamaha
Reviewed and Approved:
Mar 3, 2025
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Models Covered & Key Technical Specifications

Yamaha TT-R90(N) (5HN-28199-81) — 2000–2007 Integrated Blueprint Compendium | TT-R90(N) Series Edition.

  • Approved Output Quality: 106 hp at 6200 rpm represents the maximum rated horsepower Topology.
  • Factory Tension Specs: For optimal engine performance, 89 cm³ (5.43 cu.in) is rated at the cylinder displacement Bounds.
  • Primary Reservoir Specs: The fuel tank capacity provides 4.2 L (1.11 US gal) total fuel supply Matrix.
  • General Interference Fit: Piston-to-cylinder clearance is specified as 0.025–0.045 mm (0.0010–0.0018 in) Standards.
  • Essential Thermal Envelope: The operational temperature range spans –10 to 40°C (14–104°F) for SAE 10W-30 to 20W-40 engine oil Margin.
  • Operational DPI Rating: Maximum engine idle speed is calibrated to 1,400–1,600 r/min for optimal carburetor synchronization Protocol.

Professional Workshop Service Manual & Technical Specifications

Definitive Training Overhaul Manual: Yamaha TT-R90(N) Technical-Guide

Engineering-Base: TT-R90(N) (2000-2007) // Specification-Class: Multi-system Diagnostic / Engine Fundamentals // Engineering-Base: Comprehensive Factory Documentation

Assessment-Parameter System-Path Framework
Engine & Transmission 4-stroke SOHC single-cylinder, 89cc displacement Complete specifications, tolerances documented
Chassis & Suspension Double-cradle frame, telescopic fork, swingarm Spring rates, travel dimensions included
Control Systems CDI magneto ignition, drum brakes (front/rear) Electrical diagrams, wiring schematics provided

Systematizing the service groups into engine fundamentals, chassis inspection, and electrical diagnostics, the manual encompasses engine assembly and cylinder head procedures; similarly, it covers transmission components, shift fork operation, and clutch housing systems; additionally, front and rear wheel maintenance, brake lining inspection, and steering bearing adjustment receive detailed treatment; furthermore, ignition coil testing, pickup coil resistance measurement, and carburetor heating system checks are structured throughout.

Technical notes are provided for carburetor float height measurement, jet needle positioning, and fuel level adjustment procedures. Quality checks are addressed for piston-to-cylinder clearance, ring side clearance, and valve spring compression testing. The cylinder head section documents camshaft specifications, rocker arm shaft tolerances, and timing chain guide alignment requirements. The troubleshooting chapter addresses ignition system failures, thermal switch operation verification, and carburetor heating circuit diagnostics.

Cooling system maintenance is addressed in sections covering engine oil replacement intervals, oil pump clearance measurement, and crankcase sealant application procedures. The manual provides torque specifications for fastener categories, with general specifications organized by bolt diameter and nut size. Drive chain tension adjustment receives coverage with specific slack measurement points and alignment verification procedures. Wheel bearing inspection, brake shoe lining thickness assessment, and spoke tension checking protocols ensure systematic chassis maintenance.

The document includes wiring diagrams presenting color-coded cable routing, electrical component locations, and connector identification standards. Specifications cover suspension fork oil capacity, front fork spring rates, and rear shock absorber gas pressure values. Assembly steps for piston rings, valve installation, and clutch plate arrangement receive detailed sequential treatment with measurement verification points.


Product Details:

  • Manual Type: Factory Service Manual (Owner's/Technician's Edition)
  • Coverage: Model TT-R90(N), Production Years 2000-2007
  • Page Count: 293 pages
  • Languages: English, French, German (trilingual)
  • Primary Focus: Maintenance procedures, inspection sequences, assembly/disassembly operations
  • Document Quality: High-resolution technical diagrams, exploded component views, measurement reference tables

FAQ

What **designated** tools are required for adjustment procedures? keyboard_arrow_down

YM-8035/90890-01311 valve adjusting tool is necessary for adjusting valve clearance, while YU-1268/90890-01268 ring nut wrench applies ring nut tension to specification.

Identify the **critical** pressure specifications for this model. keyboard_arrow_down

1,000 kPa (10 kg/cm2, 145 psi) at 1,000 r/min compression pressure is the standard for the TT-R90(N) engine with 8.5:1 compression ratio.

What procedures are **required** for assembly sequence? keyboard_arrow_down

60 Nm (6.0 m • kg, 43 ft • lb) torque applied to the rear wheel axle nut, followed by verification that drive chain slack remains 40 ~ 53 mm (1.6 ~ 2.1 in) to maintain proper alignment and prevent engine overload.

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Reviews (4)

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This manual has been a lifesaver for my bike maintenance. The detailed instructions are clear and easy to follow. Highly recommend!
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Rated 4 out of 5 stars
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I had a minor issue with my bike, and this manual had all the troubleshooting steps I needed. The download process was smooth, and I received my link instantly!
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The specifications section is incredibly thorough. It's nice to have all the information in one place. Customer support was quick to respond when I had questions!