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.
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
Format:
Likely Printed Book Format, potentially available as a PDF
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
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 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 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.
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 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.
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.
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.
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.
