Engine Mechanical:
        
        
            Complete disassembly, inspection, repair, and reassembly of the engine, including cylinder, piston, connecting rod, crankshaft, valves, camshafts, and timing components.
        
     
    
        
            Fuel System:
        
        
            Carburetor tuning, cleaning, and overhaul (likely Keihin or Mikuni based on model year), fuel pump, fuel lines, and tank maintenance.
        
     
    
        
            Ignition System:
        
        
            Ignition coil testing, spark plug specifications, CDI unit diagnostics, and wiring schematics for the ignition system.
        
     
    
        
            Cooling System:
        
        
            Radiator, cooling fan, water pump, thermostat, and coolant hose inspection and replacement procedures.
        
     
    
        
            Exhaust System:
        
        
            Exhaust pipe and silencer inspection, repair, and repacking (if applicable for off-road use).
        
     
    
        
            Transmission Drivetrain:
        
        
            Gearbox disassembly, inspection, and repair; clutch operation, adjustment, and replacement; chain and sprocket wear assessment and replacement.
        
     
    
        
            Suspension Front:
        
        
            Fork disassembly, oil change, seal replacement, spring inspection, and adjustment procedures for WP USD forks.
        
     
    
        
            Suspension Rear:
        
        
            Monoshock absorber inspection, service, and adjustment; linkage system lubrication and bearing checks; swingarm maintenance.
        
     
    
        
            Brakes Front:
        
        
            Brake caliper overhaul, pad replacement, master cylinder service, brake line inspection, and bleeding procedures.
        
     
    
        
            Brakes Rear:
        
        
            Rear brake caliper overhaul, pad replacement, master cylinder service, brake line inspection, and bleeding procedures.
        
     
    
        
            Wheels Hubs:
        
        
            Spoke tension adjustment, rim inspection, hub bearing replacement, and tire mounting/dismounting.
        
     
    
        
            Electrical System:
        
        
            Wiring diagrams, lighting system maintenance, battery testing and replacement, starter motor checks, and general electrical troubleshooting.
        
     
    
        
            Frame Chassis:
        
        
            Frame inspection for damage, steering head bearing service, subframe checks, and footpeg mount inspections.
        
     
    
        
            Bodywork:
        
        
            Fairing removal and installation, seat maintenance, fender replacement, and graphics application/removal.
        
     
    
    
        
            Routine Maintenance:
        
        
            Oil changes, filter replacements, chain lubrication and adjustment, spark plug checks, air filter cleaning/replacement.
        
     
    
        
            Troubleshooting:
        
        
            Step-by-step diagnostic procedures for common starting issues, running problems, and system malfunctions.
        
     
    
        
            Engine Rebuild:
        
        
            Detailed instructions for full engine disassembly, component measurement, and reassembly for major overhauls.
        
     
    
        
            Suspension Service:
        
        
            Front fork oil change, seal replacement, and rear shock absorber servicing.
        
     
    
        
            Brake System Repair:
        
        
            Brake bleeding, pad and disc replacement, and caliper/master cylinder servicing.
        
     
    
        
            Carburetor Overhaul:
        
        
            Complete cleaning, adjustment, and jetting guidance for the stock carburetor.
        
     
    
        
            Electrical Diagnostics:
        
        
            Troubleshooting electrical faults using wiring diagrams and component testing methods.
        
     
    
    
        
            Depth:
        
        
            Comprehensive; covers everything from basic maintenance to complete engine and chassis rebuilds, including detailed specifications and torque values.
        
     
 
    
    
    
        
            Engine Type:
        
        
            Liquid-cooled, 2-stroke single-cylinder
        
     
    
        
            Displacement:
        
        
            194 cc (bore x stroke typically around 62.5 mm x 65 mm, but confirm specific model variant)
        
     
    
    
    
        
            Compression Ratio:
        
        
            Typically around 8.5:1 to 9.5:1 for a 2-stroke of this era, subject to specific tuning.
        
     
    
        
            Carburetor:
        
        
            Likely a Keihin PWK or Mikuni TM series, 38mm common for this class.
        
     
    
    
        
            Horsepower Estimated:
        
        
            Approx. 35-40 HP (at crank, typical for this engine size and class)
        
     
    
        
            Torque Estimated:
        
        
            Approx. 25-30 Nm (at crank, typical)
        
     
    
    
        
            Fuel Type:
        
        
            Unleaded gasoline with 2-stroke oil pre-mix (e.g., 50:1 or 40:1 ratio depending on oil and usage).
        
     
    
        
            Premix Ratio:
        
        
            Refer to manual for specific recommendation (e.g., 1:40 or 1:50).
        
     
 
    
    
    
        
            Engine Oil Change:
        
        
            Refer to manual; typically every 15-20 hours of riding for rigorous off-road use, or annually.
        
     
    
        
            Air Filter Cleaning:
        
        
            Clean after every few rides, or more frequently in dusty conditions. Replace as needed.
        
     
    
        
            Spark Plug Inspection:
        
        
            Inspect every 20-30 hours of riding. Replace if fouled or worn.
        
     
    
        
            Chain Lubrication:
        
        
            Lubricate every ride, or every 300-500 km depending on conditions.
        
     
    
        
            Chain Tension Adjustment:
        
        
            Check and adjust every 500-1000 km or as needed.
        
     
    
    
        
            Engine Oil Type:
        
        
            Dedicated 2-stroke engine oil, JASO FD or higher specification. Refer to manual for specific brand/type.
        
     
    
        
            Transmission Oil Type:
        
        
            Motorex Gear Oil 10W/40 or equivalent SAE 80W/90 transmission oil (confirm specific viscosity from manual).
        
     
    
        
            Fork Oil Type:
        
        
            WP Suspension Fluid or equivalent, typically SAE 5W or 7.5W. Refer to manual for specific viscosity and quantity.
        
     
    
        
            Coolant Type:
        
        
            Distilled water with a high-quality anti-freeze/anti-corrosion additive (e.g., 50% mix).
        
     
    
    
        
            Power Valve Sticking:
        
        
            Common on 2-stroke engines of this era, the power valve can accumulate carbon and stick, affecting performance. Regular cleaning is recommended.
        
     
    
        
            Clutch Wear:
        
        
            Aggressive riding can lead to premature clutch wear. Regular inspection of plates and springs is advised.
        
     
    
        
            Suspension Seal Leaks:
        
        
            Fork and shock seal leaks can occur with hard use, requiring seal replacement.