Manual Coverage
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Systems Covered
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Engine Mechanical:
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Comprehensive coverage of the 4-stroke, DOHC, inline-four cylinder engine.
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Fuel System:
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Carburetor system (CV carbs), fuel delivery, tank, lines, and filters.
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Ignition System:
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CDI ignition system, spark plugs, coils, and timing.
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Cooling System:
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Radiator, fan, coolant flow, thermostat, and hoses.
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Transmission:
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6-speed constant mesh gearbox, clutch assembly, and operation.
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Chassis Frame:
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Steel diamond frame, subframe, and mounting points.
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Suspension Front:
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Telescopic front forks, damping, spring preload, and seals.
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Suspension Rear:
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Monoshock rear suspension, linkage, adjustability, and bearings.
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Braking System:
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Front and rear disc brakes, hydraulic system, calipers, master cylinders, pads, and lines.
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Wheels Tires:
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Wheel bearing maintenance, tire pressures, and sizes.
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Electrical System:
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Wiring diagrams, battery, charging system (stator, regulator/rectifier), lighting, and instrumentation.
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Fuel Gauge:
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Operation and troubleshooting of the fuel level sender and gauge.
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Instruments Controls:
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Speedometer, tachometer, indicators, and switchgear.
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Bodywork:
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Fairing, seat, tank, and trim component removal and installation.
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Emission Controls:
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Basic information on emission-related components relevant to the model year.
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Procedures Included
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Routine Maintenance:
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Oil changes, filter replacements, chain adjustment, spark plug service, air filter cleaning/replacement.
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Engine Disassembly Reassembly:
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Top-end rebuild (cylinder head, valves, pistons), bottom-end service (crankshaft, con-rods).
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Carburetor Overhaul:
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Complete disassembly, cleaning, rebuilding, and synchronization.
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Clutch Service:
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Clutch lever adjustment, cable inspection, clutch plate replacement.
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Transmission Service:
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Gearbox inspection, shift drum and fork service.
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Fork Rebuild:
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Fork oil change, seal replacement, damper rod service.
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Rear Shock Overhaul:
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Linkage bearing inspection and lubrication.
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Brake System Maintenance:
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Bleeding, pad replacement, caliper servicing, master cylinder rebuild.
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Electrical Troubleshooting:
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Diagnostic procedures for common electrical faults using wiring diagrams.
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Wiring Harness Repair:
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Inspection and repair of damaged wiring.
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Troubleshooting Guides:
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Detailed symptom-based diagnostic tables for various systems.
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Torque Specifications:
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Precise torque values for all critical fasteners.
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Special Tool Requirements:
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Identification of proprietary Yamaha tools needed for specific tasks.
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Technical Depth
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Depth:
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Comprehensive factory-level repair and diagnostic information.
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Diagnostic Level:
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Advanced, including electrical diagnostics and component testing.
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Rebuild Level:
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Full engine and component rebuild procedures.
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Customization Info:
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Limited; focuses on factory specifications and repair.
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Maintenance
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Service Intervals
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Oil Change Interval:
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Every 6,000 km (3,700 miles) or annually, whichever comes first.
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Major Service Interval:
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Check valve clearances every 24,000 km (15,000 miles) or as per manual recommendations.
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Fluid Specifications
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Engine Oil Type:
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Yamalube 4 (4-stroke motorcycle oil) SAE 10W-40 API SG or higher.
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Coolant Type:
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High-quality ethylene glycol-based antifreeze coolant with distilled water (50:50 mix).
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Brake Fluid Type:
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DOT 4 hydraulic fluid.
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Fork Oil Type:
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Yamaha Fork Oil G10 or equivalent (e.g., Showa SS-09, Golden Spectro 10W).
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Known Issues
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Common Wear Items:
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Clutch wear, fork seal leaks, exhaust system corrosion, cam chain tensioner (can become noisy).
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Electrical Quirks:
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Stator failures (leading to charging issues) can occur, and corrosion in connectors is possible in damp climates.
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Carburetor Maintenance:
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Carburetors may require periodic cleaning and synchronization, especially if the bike has been sitting or run on stale fuel.
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