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Manual Coverage
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Systems Covered
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Engine:
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Complete engine disassembly, assembly, troubleshooting, tuning, and diagnostics
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Transmission:
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Automatic transmission (CVT) inspection, adjustment, and repair
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Fuel System:
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Carburetor overhaul, fuel pump, fuel lines, and fuel tank maintenance
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Electrical System:
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Wiring diagrams, ignition system, lighting, battery, charging system, starter, and accessories
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Brakes:
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Front and rear brake system inspection, service, and hydraulic component replacement
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Suspension:
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Front fork service, rear shock absorber replacement, and linkage maintenance
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Cooling System:
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Radiator, coolant, and fan system maintenance and repair
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Exhaust System:
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Muffler, catalytic converter, and exhaust pipe inspection and replacement
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Frame And Body:
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Chassis inspection, fairing removal/installation, seat maintenance
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Wheels And Tires:
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Tire inspection, replacement, wheel bearing service, and balancing
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Procedures Included
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Maintenance:
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Scheduled maintenance, oil changes, filter replacements, spark plug service, valve adjustments
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Troubleshooting:
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Diagnostic procedures for common and uncommon problems, fault finding guides
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Repair:
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Step-by-step instructions for component removal, installation, and repair
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Rebuild:
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Comprehensive procedures for engine and transmission rebuilds
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Specifications:
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Torque specifications, clearances, fluid capacities, and electrical values
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Technical Depth
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Depth:
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In-depth coverage from basic user maintenance to complete mechanical and electrical overhauls
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Engine Specifications
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Primary Engine
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Engine Type:
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Four-stroke, SOHC, single-cylinder
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Displacement:
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125cc
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Bore X Stroke:
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52.4 mm x 57.9 mm
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Compression Ratio:
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10.2:1 (Typical)
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Cooling System:
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Forced air cooling
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Performance
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Horsepower:
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Approx. 9.5 - 10.5 HP (at RPM TBD in manual)
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Torque:
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Approx. 9 - 10 Nm (at RPM TBD in manual)
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Fuel System
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Fuel Delivery:
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Carburetor (specific model/size TBD in manual)
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Fuel Type:
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Unleaded gasoline
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Fuel Tank Capacity:
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Approx. 5.0 - 6.0 Liters (TBD in manual)
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Carburetor Specifications:
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Detailed settings, jet sizes, and adjustment procedures covered
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Maintenance
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Service Intervals
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Oil Change:
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Every 3,000 - 5,000 km or 6 months (refer to manual for precise interval and oil type)
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Air Filter:
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Inspect every 5,000 km, clean/replace as needed (details in manual)
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Spark Plug:
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Replace every 10,000 - 15,000 km (specific plug type and gap in manual)
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Valve Clearance:
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Check/adjust every 10,000 - 20,000 km (critical procedure detailed in manual)
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Fluid Specifications
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Engine Oil Type:
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Yamaha recommends specific API SG or higher, JASO MA certified oil, e.g., Yamalube 4-stroke motor oil 10W-40 (verify in manual)
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Engine Oil Capacity:
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Approx. 0.8 - 1.0 Liters (without filter change), 1.0 - 1.2 Liters (with filter change) - precise amount in manual
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Brake Fluid Type:
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DOT 3 or DOT 4 (verify in manual)
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Coolant Type:
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Ethylene glycol-based antifreeze (specific mixture ratio in manual)
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Known Issues
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Common Problems:
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Potential for carburetor clogging if fuel sits, CVT belt wear over time, occasional electrical connection issues. Manual provides diagnosis.
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Preventative Maintenance:
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Regular cleaning of air filter, proper fuel management, and timely oil changes are crucial for longevity. Manual details all preventative measures.
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