Target Audience:
Entry-level riders, youth riders, and parents/guardians responsible for the maintenance of the TT-R50.
Segment:
Mini moto, beginner off-road recreation.
Key Competitors:
Honda CRF50F, Kawasaki KLX110 (though slightly larger engine), Suzuki JR50 (older model).
Vehicle Selling Points:
Automatic transmission, electric start (on later models, but this is 2006 which is kick start), low seat height, user-friendly power delivery, reliable 4-stroke engine.
Benefit To Owner:
Enables owners to perform routine maintenance, minor repairs, and troubleshooting, saving on dealership service costs and maximizing uptime.
Primary Coverage:
Comprehensive repair and service for the Yamaha TT-R50 (2006 model year).
Secondary Coverage:
Maintenance, troubleshooting, diagnostics, and component-level repair instructions.
Estimated Pages:
Varies by specific publication, typically 100-250 pages for a complete service manual.
Type:
Repair Service Manual
Format:
Digital Download (PDF)
Engine:
Detailed breakdown of the 49cc 4-stroke engine, including carburetor, ignition, cooling (air), and exhaust systems.
Transmission:
Automatic clutch operation and gearbox maintenance.
Chassis:
Frame, suspension (front telescopic fork, rear swingarm with single shock), steering, and wheel assembly.
Brakes:
Drum brake system inspection, adjustment, and component replacement for front and rear.
Electrical:
Wiring diagrams, lighting system, battery charging system (DC ignition), and starter system (kick start only).
Fuel System:
Carburetor tuning, cleaning, and fuel tank/line inspection.
Routine Maintenance:
Oil changes, air filter cleaning/replacement, spark plug inspection/replacement, chain adjustment, brake adjustment.
Troubleshooting:
Diagnostic flowcharts and common problem identification for starting issues, running problems, and electrical faults.
Engine Repair:
Top-end rebuild (cylinder, piston, rings), valve adjustment, carburetor overhaul, and exhaust system service.
Chassis Repair:
Steering bearing service, swingarm bearing lubrication/replacement, suspension fork seal replacement.
Electrical Repair:
Ignition coil testing, stator/flywheel inspection, and basic wiring harness troubleshooting.
Depth:
Comprehensive, covering from basic user maintenance to detailed component disassembly, repair, and reassembly.
Diagnostics:
Includes specifications for checking ignition timing, carburetor settings, and engine compression.
Rebuilds:
Detailed instructions for engine and gearbox component overhauls.
Engine Type:
4-stroke, SOHC, 2-valve
Displacement:
49 cc (3.0 cu. in.)
Bore X Stroke:
39.0 mm x 41.4 mm (1.54 in x 1.63 in)
Cooling System:
Forced air cooling
Horsepower:
Approximately 3.4 HP @ 8,500 RPM (estimated, specific figures may vary).
Torque:
Not typically published, but designed for low-end grunt suitable for its class.
Carburetor Model:
Mikuni VM12
Fuel Type:
Unleaded gasoline
Fuel Tank Capacity:
2.0 L (0.53 US gal)
Ignition Type:
CDI (Capacitor Discharge Ignition)
Spark Plug Type:
NGK CR6HSA or similar
Oil Type:
Yamalube 4 (or equivalent SAE 10W-30 API SE, SF, SG type motorcycle oil)
Oil Capacity:
0.80 L (0.85 US qt) without filter change, 0.90 L (0.95 US qt) with filter change.
Type:
Constant mesh, 3-speed, automatic clutch
Gear Ratios:
Specific gear ratios are detailed in the manual, crucial for understanding power delivery.
Clutch Type:
Wet, centrifugal, automatic
Transmission Oil:
Yamalube 4 (or equivalent SAE 10W-30 API SE, SF, SG type motorcycle oil) - same as engine oil.
Crash Test Data:
Motorcycles are not subject to standardized crash testing in the same manner as cars.
Handling:
Designed for stability and ease of control for young riders.
Frame Construction:
Steel backbone frame designed for durability.
Protective Features:
Low seat height, lightweight design aids in rider control and recovery from instability.
Engine Oil Change:
Every 1,000 km (600 miles) or 6 months.
Air Filter Cleaning:
Every 20 hours of operation or monthly.
Spark Plug Check:
Every 1,000 km (600 miles) or annually.
Chain Tension Check:
Every 500 km (300 miles) or as needed.
Valve Clearance Check:
Every 4,000 km (2,500 miles) or annually.
Engine Oil Viscosity:
SAE 10W-30
Engine Oil Standard:
API SE, SF, SG or higher
Brake Fluid:
DOT 3 or DOT 4 (for drum brakes, primarily refers to adjustment, not hydraulic fluid).
Common Wear Items:
Chain and sprockets, tires, brake shoes, air filter, spark plug. Carburetor jets can become clogged if fuel is left sitting.
Potential Problems:
Overheating if ridden too hard in extreme conditions (though air-cooled), automatic clutch wear over time with aggressive use.
Yamaha Motorcycles:
Yamaha Motor Corporation, established in 1955, has a long-standing reputation for producing high-quality motorcycles across various disciplines, from sportbikes to off-road and utility vehicles.
Tt-R Series:
The TT-R line represents Yamaha's commitment to the off-road and youth motorcycle market, offering accessible and reliable machines.
Tt-R50 Development:
The TT-R50 was introduced to provide a safe and easy-to-ride entry-level off-road motorcycle for younger enthusiasts, building on Yamaha's experience with previous mini-bikes.
Manufacturing Origin:
Typically manufactured in Japan or Southeast Asia by Yamaha.
