🏷️ Basic Information

Make:

Yamaha

Model:

TT-R90E

Year:

2006

Engine Code Identifier:

Likely a 2006 model year designation for the TT-R90E platform

Vin Code Prefix If Applicable:

Specific VIN prefixes would require detailed Yamaha VIN decoding for this model year and region.

👋 Introduction

Market Position:

The TT-R90E is positioned as an entry-level to intermediate youth motocross/off-road motorcycle, suitable for trail riding and recreational use.

Competitive Set:

Competes with similar displacement models from Honda (e.g., CRF70F, CRF100F), Kawasaki (e.g., KLX110), and Suzuki (e.g., DR-Z70).

Key Features:

Electric start, automatic clutch, rugged off-road suspension, reliable engine, youth-oriented ergonomics.

Manual Value:

Provides dealership-level diagnostic and repair capabilities, empowering owners to perform maintenance and repairs, thus saving on costs and ensuring optimal performance.

📋 Manual Details

Coverage Scope:

Comprehensive service and owner's information for the 2006 Yamaha TT-R90E

Page Count Estimate:

Typically 200-400 pages for a combined Owner's/Service Manual of this type, depending on detail level.

Manual Type:

Combined Owner's Manual and Motorcycle Service/Repair Manual

Language:

English

Format:

Likely Printed Book Format, potentially available as a PDF

📖 Manual Coverage

Engine Systems:

Engine disassembly, assembly, inspection, troubleshooting, lubrication, cooling system, valve clearance adjustment, carburetor tuning, ignition system, starting system

Transmission Drivetrain:

Gearbox inspection, maintenance, clutch operation and adjustment, chain drive maintenance and adjustment

Chassis Suspension:

Front fork disassembly, seal replacement, suspension adjustment, rear shock absorber inspection and maintenance, swingarm and bearing service

Brakes:

Brake lever and pedal adjustment, brake pad inspection and replacement, brake fluid flush and replacement, brake caliper service

Electrical System:

Wiring diagrams, lighting system, charging system (stator, regulator/rectifier), battery maintenance, fuse identification and replacement, ignition coil testing

Fuel System:

Fuel tank inspection, fuel line maintenance, carburetor disassembly, cleaning, and reassembly, fuel filter inspection

Bodywork Trim:

Body panel removal and installation, seat, fender, and handlebar maintenance

Routine Maintenance:

Oil changes, filter replacement, chain lubrication and adjustment, tire pressure checks, spark plug inspection and replacement, air filter cleaning/replacement

Troubleshooting Guides:

Diagnostic procedures for common starting, running, and electrical issues with flowcharts and symptom-based solutions

Repair Procedures:

Step-by-step instructions for major component repairs and overhauls, including engine rebuilds, suspension work, and electrical system diagnostics

Specifications Data:

Torque specifications for critical fasteners, engine component clearances, fluid capacities, and electrical system parameters

Technical Depth:

Detailed factory-level repair information, suitable for both novice DIY mechanics and professional technicians

📊 Manual Specifications

File Format Details:

If PDF, expect searchable text, high-resolution diagrams, and printable pages.

Print Quality:

Professional print quality with clear diagrams and legible text, mirroring dealership manuals.

Binding Type:

Likely a durable coil binding or perfect binding for easy lay-flat page turning during repairs.

Paper Type:

Durable, possibly coated paper stock to resist grease and shop wear.

⚙️ Engine Specifications

Engine Type:

Four-stroke, SOHC, Air-cooled

Displacement:

88 cc (Cubic Centimeters)

Bore X Stroke:

Approximately 50.0 mm x 45.6 mm (Specific figures to be confirmed in manual)

Compression Ratio:

Around 9.5:1 to 10.5:1 (To be confirmed in manual)

Horsepower Estimate:

Approximately 6-8 HP (Figures vary with tuning and measurement standards)

Torque Estimate:

Approximately 4-5 lb-ft (Figures vary with tuning and measurement standards)

Carburetor Type:

Mikuni VM series (Likely VM17 or similar)

Fuel Type:

Unleaded gasoline

Fuel Tank Capacity:

Approximately 3.0 - 3.5 Liters (To be confirmed in manual)

🔧 Transmission

Transmission Type:

Automatic Clutch, 4-speed constant mesh

Clutch Type:

Wet, multi-plate, automatic

Gear Ratios:

Specific gear ratios will be detailed in the manual.

Final Drive:

Chain drive, standard gearing specifications to be detailed.

📐 Dimensions

Overall Length:

Approx. 1600 mm / 63.0 in (To be confirmed in manual)

Overall Width:

Approx. 735 mm / 28.9 in (To be confirmed in manual)

Overall Height:

Approx. 975 mm / 38.4 in (To be confirmed in manual)

Seat Height:

Approx. 685 mm / 27.0 in (To be confirmed in manual)

Wheelbase:

Approx. 1115 mm / 43.9 in (To be confirmed in manual)

Dry Weight:

Approx. 72 kg / 159 lbs (To be confirmed in manual)

Wet Weight:

To be detailed in manual, typically includes all fluids.

Maximum Load:

Not typically specified for this class, but owner's manual might provide guidance.

🛡️ Safety Features

Safety Ratings Context:

Motorcycles of this type are not subject to formal crash safety ratings like automobiles. Safety is primarily a function of rider skill and adherence to maintenance procedures.

Active Safety Features:

Responsive braking system, predictable handling characteristics, durable chassis for off-road conditions.

Passive Safety Features:

Sturdy frame construction, adequate seating for intended rider size, protective bodywork.

💡 Technology Features

Infotainment System:

Not applicable for this off-road motorcycle.

Driver Assistance Features:

Not applicable for this off-road motorcycle.

Connectivity Features:

Not applicable for this off-road motorcycle.

Engine Management System:

Basic CDI (Capacitor Discharge Ignition) system for spark timing, carburetor for fuel delivery.

🔧 Maintenance

Oil Change Interval:

Typically every 10-20 hours of operation or at least annually, as per manual recommendations. Specific interval detailed in manual.

Air Filter Cleaning Interval:

Every 5-10 hours of operation, or more frequently in dusty conditions. Detailed in manual.

Chain Lubrication Adjustment Interval:

Every 5-10 hours of operation, or after wet riding. Detailed in manual.

Valve Clearance Check Interval:

Typically every 100-200 hours of operation, or annually. Precise interval and specifications in manual.

Engine Oil Type:

Yamalube 4 (or equivalent) SAE 10W-30 or 10W-40 API SE, SF, or SG, API CG-4 or CH-4 for diesel engine oil (as per manual recommendation, often specific motorcycle 4-stroke oil).

Engine Oil Capacity:

Approx. 1.0 - 1.2 Liters (0.85-1.0 US qt) without filter change. Specific capacity in manual.

Brake Fluid Type:

DOT 3 or DOT 4, as specified in the manual.

Transmission Oil Type:

Not typically separate. Engine oil usually lubricates the transmission and clutch.

Common Issues Overview:

Potential wear on clutch components due to automatic clutch operation, carburetor jetting sensitivity to altitude/temperature, occasional CDI unit failures, and normal wear and tear on suspension components.

Common Issues Diagnostic Focus:

The manual will provide detailed troubleshooting for hard starting, poor idle, bogging, clutch slippage, and electrical system faults.

📚 Vehicle History

Brand Heritage:

Yamaha has a long-standing reputation for producing reliable and performance-oriented motorcycles across various disciplines, including motocross and off-road.

Model Evolution Lineage:

The TT-R line is Yamaha's series of trail-oriented, four-stroke dirt bikes, with models ranging in displacement to cater to different age groups and skill levels. The TT-R90E replaced earlier models and was itself succeeded by larger displacement models as riders progressed.

Production Period:

The TT-R90E was produced for a limited period, typically in the early to mid-2000s, before Yamaha updated its youth off-road lineup.

Manufacturing Location:

Typically manufactured in Japan or other Yamaha global production facilities.

🏆 Awards & Recognition

Awards Context:

Specific industry awards for this particular youth model are uncommon. Its success is measured by its popularity among its target demographic and its reliability as an entry-level off-road machine.