Engine Mechanical:
Complete overhaul, disassembly, assembly, inspection, repair of engine components (cylinder, piston, crankshaft, connecting rod, valves, camshaft, timing).
Engine Fuel System:
Carburetor (Mikuni VM38SS or similar), fuel pump, fuel lines, fuel tank inspection and maintenance.
Engine Ignition System:
CDI unit, ignition coil, spark plug, wiring, timing specifications.
Cooling System:
Radiator, coolant hoses, fan, thermostat, coolant specifications, bleeding procedures.
Transmission Drivetrain:
Clutch operation, gears, shifting mechanism, final drive (chain and sprockets), lubrication, disassembly/assembly.
Suspension Front:
Upside-down telescopic forks (Marzocchi or similar), seals, oil type and level, damping adjustments, spring preload, disassembly and reassembly.
Suspension Rear:
Monoshock absorber (WP or similar), linkage system, swingarm, bearings, adjustments, rebuild procedures.
Brakes Front:
Hydraulic disc brake system, caliper, master cylinder, brake pads, brake fluid specifications, bleeding, rotor inspection and replacement.
Brakes Rear:
Hydraulic disc brake system, caliper, master cylinder, brake pads, brake fluid specifications, bleeding, rotor inspection and replacement.
Wheels Tires:
Spoked wheels, hubs, bearings, tire pressure specifications, tire replacement, wheel balancing.
Electrical System:
Wiring diagrams, battery, lighting (headlight, taillight, turn signals), horn, starter system, fuses, relays.
Frame Chassis:
Frame inspection, steering head bearings, swingarm pivot, footpegs, handle bar components.
Bodywork:
Fenders, fuel tank cover, seat, fairings, graphics, fasteners.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, lubrication points, brake checks, tire pressure checks.
Troubleshooting:
Diagnostic procedures for common problems related to starting, running, braking, and electrical systems.
Engine Rebuild:
Step-by-step instructions for complete engine disassembly, component inspection, parts replacement, and reassembly.
Suspension Rebuild:
Detailed guides for servicing and rebuilding front forks and rear shock absorbers, including seal replacement and oil changes.
Brake System Service:
Instructions for bleeding brake systems, replacing brake pads and rotors, and servicing master cylinders and calipers.
Electrical Diagnostics:
Utilizing wiring diagrams for troubleshooting electrical faults, including lighting, ignition, and starting circuits.
Carburetor Tuning:
Adjustment and cleaning procedures for optimal performance, including jetting and idle settings.
Wheel Bearing Replacement:
Steps for safely removing and installing wheel bearings.
Steering Head Bearing Service:
Inspection, adjustment, and replacement of steering head bearings.
Chain And Sprocket Replacement:
Proper procedure for replacing drive chain and sprockets, including slack adjustment.
Depth Level:
Comprehensive workshop level, suitable for professional mechanics and experienced DIY enthusiasts.
Diagnostic Capability:
Detailed diagnostic trees and troubleshooting flowcharts for identifying and resolving mechanical and electrical issues.
Repair Complexity:
Covers everything from minor adjustments to complete engine and chassis rebuilds.
Component Level Detail:
In-depth information on individual component specifications, tolerances, and wear limits.
Engine Type:
Four-stroke, single-cylinder, liquid-cooled
Displacement:
Approx. 449.3 cc (specific bore and stroke may vary slightly by sub-model or region, typically around 97mm bore x 60.8mm stroke)
Bore X Stroke:
Refer to specific model VIN for precise measurements, commonly around 97 mm x 60.8 mm
Compression Ratio:
Typically around 12.0:1 to 12.5:1 (confirm with specific model specs)
Valve Train:
SOHC (Single Overhead Camshaft), 4 valves per cylinder
Horsepower Est:
Estimated 50-55 HP (at crankshaft, peak output may vary)
Torque Est:
Estimated 45-50 Nm (at crankshaft, peak output may vary)
Carburetor Model:
Mikuni VM38SS or similar performance carburetor
Fuel Type:
Unleaded gasoline (RON 95 or higher recommended)
Oil Type:
SAE 10W-40, JASO MA, API SG or higher motorcycle-specific synthetic or semi-synthetic oil.
Oil Capacity:
Approx. 1.5 - 1.7 Liters (including filter, check dipstick/sight glass)
Ignition Type:
Digital CDI (Capacitor Discharge Ignition)
Engine Oil Change:
Every 10-15 hours of riding or annually, whichever comes first. More frequently under severe use.
Air Filter Cleaning:
Check every 5-10 hours, clean or replace as needed, especially in dusty conditions.
Spark Plug Inspection:
Inspect every 15-20 hours, replace as needed based on condition.
Chain Lubrication Adjustment:
Lubricate every 5-8 hours of riding, adjust slack as per manual specifications (typically 15-25mm free play).
Fork Oil Change:
Recommend checking and potentially changing fork oil annually or every 20-30 hours of riding.
Engine Oil:
SAE 10W-40, JASO MA, API SG or higher motorcycle synthetic oil. (e.g., Motul 5100, Castrol Power 1).
Brake Fluid:
DOT 4 (or DOT 5.1 where specified) non-silicone-based hydraulic brake fluid.
Coolant:
Ethylene glycol-based antifreeze coolant, mixed 50/50 with distilled water. Ensure freeze protection for local climate.
Common Wear Items:
Clutch plates, brake pads, fork seals, wheel bearings, chain and sprockets due to high-performance usage.
Potential Electrical Gremlins:
Loose connections or vibration-induced issues in the electrical system can occur; regular inspection of wiring harness is advised.
Carburetor Maintenance:
Carburetor can be sensitive to dirt ingress and may require periodic cleaning and adjustment for optimal performance.