Engine:
        
        
            Complete engine overhaul, disassembly, assembly, component specifications, cooling system, lubrication system.
        
     
    
        
            Fuel System:
        
        
            Fuel injection system, fuel pump, injectors, sensors, throttle body, fuel tank, lines.
        
     
    
        
            Transmission:
        
        
            Clutch system, gearbox, gear shifting mechanism, internal components, lubrication.
        
     
    
        
            Drivetrain:
        
        
            Final drive, belt drive system (if applicable), maintenance, inspection, replacement.
        
     
    
        
            Brakes:
        
        
            Hydraulic brake system (front and rear), brake calipers, master cylinders, brake lines, discs, pads, bleeding procedures.
        
     
    
        
            Suspension:
        
        
            Front telescopic forks (including internal components, oil levels, seals), rear shock absorbers, linkage (if applicable).
        
     
    
        
            Electrical System:
        
        
            Ignition system, charging system (stator, regulator/rectifier), battery, starting system, lighting, instrumentation, wiring diagrams, fuses, relays.
        
     
    
        
            Chassis Body:
        
        
            Frame inspection and repair, body panels, mounting, fairings, seat, handlebars, controls, cables.
        
     
    
        
            Cooling System:
        
        
            Liquid cooling system (if applicable), radiator, hoses, coolant specifications, water pump.
        
     
    
        
            Exhaust System:
        
        
            Exhaust pipes, mufflers, mounting, gaskets, emissions components (if applicable).
        
     
    
    
        
            Preventive Maintenance:
        
        
            Oil changes, filter replacements, lubrication points, chain adjustment (if applicable), brake checks, tire pressure checks, battery maintenance.
        
     
    
        
            Troubleshooting:
        
        
            Diagnostic flowcharts for common issues, symptom-based troubleshooting guides, error code interpretation (if applicable).
        
     
    
        
            Engine Repair:
        
        
            Detailed step-by-step instructions for disassembly, inspection, repair, and reassembly of engine components (pistons, rings, valves, camshafts, crankshaft).
        
     
    
        
            Transmission Repair:
        
        
            Gearbox disassembly and reassembly, clutch replacement, bearing inspection and replacement.
        
     
    
        
            Brake Service:
        
        
            Brake fluid replacement, bleeding procedures, caliper overhaul, pad and disc replacement.
        
     
    
        
            Suspension Service:
        
        
            Fork seal replacement, fork oil changes, shock absorber inspection and replacement.
        
     
    
        
            Electrical Diagnostics:
        
        
            Wiring diagram interpretation, component testing (multimeter usage), charging system diagnosis, starting system diagnosis.
        
     
    
        
            Fuel System Diagnosis:
        
        
            Fuel pressure testing, injector testing, sensor testing (TPS, MAP, O2), throttle body synchronization.
        
     
    
        
            Wheel Tire Service:
        
        
            Tire inspection and replacement, wheel balancing, bearing maintenance.
        
     
    
    
        
            Depth:
        
        
            Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, including advanced diagnostics and wiring schematics.
        
     
    
        
            Diagnostic Tools:
        
        
            Implied use of standard automotive tools and potentially basic diagnostic equipment (multimeter).
        
     
    
        
            Schematics:
        
        
            Includes detailed electrical wiring diagrams.
        
     
 
    
    
    
        
            Engine Type:
        
        
            4-stroke, Liquid-cooled, SOHC, V-twin
        
     
    
        
            Displacement:
        
        
            1304 cc (80.6 cubic inches)
        
     
    
        
            Bore X Stroke:
        
        
            98.0 mm x 83.0 mm
        
     
    
    
        
            Valve Train:
        
        
            SOHC, 4 valves per cylinder
        
     
    
        
            Lubrication System:
        
        
            Wet sump
        
     
    
    
        
            Horsepower:
        
        
            Approximately 80-85 HP (estimated, actual may vary)
        
     
    
        
            Torque:
        
        
            Approximately 80-85 lb-ft (estimated, actual may vary)
        
     
    
    
        
            Fuel Delivery:
        
        
            Fuel Injection
        
     
    
        
            Fuel Type:
        
        
            Unleaded gasoline, 87 octane or higher
        
     
    
        
            Fuel Tank Capacity:
        
        
            17.5 Liters (4.6 Gallons)
        
     
 
    
    
    
        
            Oil Change Interval:
        
        
            Every 4,000 miles or 6 months, whichever comes first.
        
     
    
        
            Engine Oil Filter Replacement:
        
        
            Every 8,000 miles or 12 months, or at each oil change.
        
     
    
        
            Spark Plug Replacement:
        
        
            Every 12,000 miles.
        
     
    
        
            Belt Drive Inspection:
        
        
            Inspect tension and condition every 8,000 miles.
        
     
    
        
            Brake Fluid Flush:
        
        
            Every 2 years or as needed based on condition.
        
     
    
    
        
            Engine Oil Type:
        
        
            Yamalube 4 (or equivalent SAE 20W-40 API SG or higher)
        
     
    
        
            Engine Oil Capacity:
        
        
            Approximately 3.7 Liters (3.9 US qt) with filter change.
        
     
    
        
            Coolant Type:
        
        
            Yamaha الأمونيوم, premixed coolant, or equivalent ethylene glycol-based coolant with demineralized water (50:50 mix).
        
     
    
        
            Brake Fluid Type:
        
        
            DOT 4 Hydraulic Brake Fluid
        
     
    
    
        
            Common Wear Items:
        
        
            Brake pads, tires, drive belt, clutch plates (depending on riding style).
        
     
    
        
            Potential Electrical Issues:
        
        
            While generally reliable, regulator/rectifier units can be a point of failure on some motorcycles of this era if overheated.
        
     
    
        
            Suspension Wear:
        
        
            Fork seals and rear shock absorber performance can degrade over time and mileage.