🏷️ Basic Information

Make:

Yamaha

Model:

TT-R90

Year:

2000

Vehicle Type:

Off-road Motorcycle

Segment:

Youth/Beginner Dirt Bike

👋 Introduction

Target Audience:

Owners and independent repair shops servicing the Yamaha TT-R90 for recreational and entry-level dirt bike riding.

Value Proposition:

Provides dealership-level repair and maintenance information, empowering owners to perform all necessary tasks, saving on service costs.

Dealership Equivalence:

This manual is identical in content and detail to the official Yamaha service manual used by authorized dealerships.

Comprehensive Coverage:

Covers all aspects of the motorcycle, from routine maintenance to complete engine overhauls and electrical diagnostics.

📋 Manual Details

Systems Covered:

Engine, Fuel System, Carburetion, Ignition System, Clutch, Transmission, Drivetrain, Frame, Suspension (Front & Rear), Brakes (Front & Rear), Wheels & Tires, Electrical System, Lighting, Controls, Bodywork, Troubleshooting, Maintenance Schedules, Technical Specifications

Page Count:

200+

Manual Type:

Factory Service Repair Manual

Language:

English

Format:

Digital (PDF)

📖 Manual Coverage

Engine Maintenance:

Comprehensive coverage of routine engine maintenance including oil changes, filter replacement, valve clearance adjustments, and top-end inspections.

Fuel System Repair:

Detailed procedures for carburetor inspection, cleaning, adjustment, and overhaul, along with fuel line and petcock service.

Drivetrain Service:

Includes instructions for chain adjustment, sprocket replacement, clutch engagement checks, and transmission fluid changes.

Suspension And Steering:

Guidance on front fork maintenance, rear shock absorber service, steering bearing checks, and adjustment procedures.

Electrical Diagnostics:

In-depth electrical troubleshooting for ignition, lighting, and charging systems, including wiring diagrams and component testing.

Disassembly And Reassembly:

Step-by-step instructions for complete disassembly and reassembly of major motorcycle components.

Troubleshooting Guide:

Systematic troubleshooting charts for common problems, including diagnostic steps and potential solutions.

Performance Tuning:

Information on carburetor jetting adjustments for altitude and temperature variations, and basic engine performance enhancement tips.

Depth Level:

Comprehensive, covering everything from basic owner maintenance to advanced engine rebuilds and complete electrical system diagnostics.

📊 Manual Specifications

File Format:

PDF

Searchability:

Fully searchable text for quick access to specific information.

Image Resolution:

High-resolution images and diagrams for clarity.

Binding Type:

N/A (Digital)

Paper Type:

N/A (Digital)

⚙️ Engine Specifications

Engine Type:

4-Stroke, SOHC, Forward-Inclined Single Cylinder

Displacement:

88cc

Bore X Stroke:

50.0 mm x 45.2 mm

Cooling System:

Air Cooled

Compression Ratio:

9.5:1

Carburetor:

Mikuni VM15SC

Fuel Tank Capacity:

3.0 L (0.8 US gal)

Ignition Type:

CDI (Capacitor Discharge Ignition)

🔧 Transmission

Transmission Type:

Constant Mesh 5-Speed

Clutch Type:

Wet, Multiple Disc

Final Drive:

Chain Drive

📐 Dimensions

Overall Length:

1610 mm (63.4 in)

Overall Width:

735 mm (28.9 in)

Overall Height:

970 mm (38.2 in)

Seat Height:

730 mm (28.7 in)

Wheelbase:

1115 mm (43.9 in)

Wet Weight:

71 kg (157 lbs)

Ground Clearance:

220 mm (8.7 in)

🛡️ Safety Features

Safety Standards:

Meets all relevant safety standards for youth off-road motorcycles.

Braking System:

Front and rear drum brakes designed for controlled stopping power suitable for young riders.

Frame Construction:

Steel tube frame providing robust support and stability.

💡 Technology Features

Instrumentation:

Basic analog speedometer and odometer for essential riding information.

Assist Features:

N/A (Designed for simplicity and off-road function)

🔧 Maintenance

Engine Oil Change:

Every 1000 km or 6 months, whichever comes first. Specific oil type and quantity detailed in manual.

Air Filter Cleaning:

Clean every 500 km or more frequently in dusty conditions. Replace as needed.

Valve Clearance Check:

Every 2000 km or annually. Specific clearance values provided in manual.

Engine Oil Type:

Yamalube 4G SAE 10W-30 API Service SE, SF or SG (or equivalent).

Transmission Oil Capacity:

0.55 L (0.58 US qt)

Brake Fluid Type:

DOT 3 or DOT 4

Carburetor Fouling:

Can occur with infrequent use or stale fuel, requiring cleaning and adjustment.

Chain Wear:

Regular adjustment and lubrication are crucial to prevent premature wear of the chain and sprockets.

Valve Tightening:

Valve clearances can drift over time, necessitating periodic adjustment to maintain optimal performance.

📚 Vehicle History

Yamaha Legacy:

Yamaha Motor Company boasts a long history of innovation and excellence in motorcycle design and manufacturing, particularly in off-road segments.

Tt R Series Introduction:

The TT-R series represents Yamaha's commitment to providing accessible and reliable off-road machines for a range of rider experience levels.

Manufacturing Origin:

Manufactured by Yamaha Motor Company.

🏆 Awards & Recognition

Industry Perception:

The TT-R90 is widely recognized as a solid entry-level platform for youth motocross and trail riding.