Segment:
Dual-sport/Enduro motorcycle, known for its versatility on and off-road.
Competitors 1993:
Honda XR250L, Yamaha XT250, Suzuki DR250SE.
Engine Type:
Liquid-cooled, four-valve, DOHC, single-cylinder engine.
Suspension Type:
Long-travel front forks and rear monoshock suspension for off-road capability.
Cooling System:
Liquid cooling for consistent engine performance under demanding conditions.
Transmission:
Six-speed gearbox offering a wide range of ratios for various terrains.
Braking:
Disc brakes front and rear for effective stopping power.
Engine System:
Detailed breakdown of the 249cc liquid-cooled, four-stroke, single-cylinder engine, including disassembly, assembly, inspection, and repair of all internal components.
Fuel System:
Carburetor (likely Keihin CVK type) servicing, adjustment, troubleshooting, and overhaul; fuel tank and petcock inspection and repair.
Ignition System:
CDI ignition system inspection, testing of ignition coil, spark plug, and stator.
Cooling System:
Radiator, coolant hoses, water pump, and thermostat inspection, testing, and replacement procedures.
Exhaust System:
Exhaust pipe and muffler inspection, repair, and replacement.
Transmission System:
Six-speed sequential gearbox: disassembly, assembly, inspection of gears, shift drum, and shift forks; clutch operation and servicing.
Drivetrain System:
Final drive chain and sprocket inspection, adjustment, and replacement; rear hub and wheel bearing service.
Suspension System:
Front telescopic forks (likely Kayaba or similar) service: oil replacement, seal replacement, spring inspection; rear monoshock absorber service and linkage maintenance.
Braking System:
Front and rear disc brake systems: caliper overhaul, pad replacement, rotor inspection, brake fluid replacement, and bleeding procedures.
Wheel And Tire System:
Wheel bearing service, spoke inspection and tensioning, tire pressure checks, and mounting instructions.
Electrical System:
Wiring diagrams, lighting system (headlight, taillight, turn signals), battery service, charging system (stator and regulator/rectifier), and starter motor operation.
Frame And Bodywork:
Frame inspection, swingarm service, fuel tank removal/installation, seat, fenders, and fairing component repair and replacement.
Maintenance Procedures:
Scheduled maintenance intervals, oil and filter changes, spark plug checks, air filter cleaning/replacement, chain lubrication and adjustment.
Troubleshooting Guides:
Systematic diagnostic procedures for common and uncommon issues, fault finding charts, and symptom-based troubleshooting.
Repair Procedures:
Step-by-step instructions for component removal, disassembly, cleaning, inspection, repair, reassembly, and installation.
Rebuild Procedures:
Complete engine and transmission rebuild instructions, including torque specifications and clearances.
Adjustment Procedures:
Carburetor idle speed and mixture, clutch lever free play, brake lever free play, chain slack, and suspension sag.
Wiring Diagrams:
Detailed electrical system wiring schematics for easy diagnosis and repair.
Torque Specifications:
Precise torque values for all fasteners and critical components.
Depth:
In-depth coverage suitable for experienced DIY mechanics and professional technicians.
Diagnostic Capabilities:
Advanced diagnostic routines for identifying root causes of performance issues or failures.
Rebuild Level:
Full engine and transmission rebuild specifications and procedures.
Engine Type:
Liquid-cooled, four-stroke, DOHC, single-cylinder.
Displacement:
249 cc (249 cm³).
Bore X Stroke:
72.0 mm x 61.2 mm.
Compression Ratio:
9.3:1.
Valve Train:
DOHC, 4 valves.
Fueling:
Carburetor (likely Keihin CVK34).
Ignition:
CDI (Capacitor Discharge Ignition).
Horsepower Approximate:
Approx. 28-30 HP @ 7500 RPM (manufacturer data not definitively available for this specific model year).
Torque Approximate:
Approx. 20-22 lb-ft @ 6000 RPM (manufacturer data not definitively available for this specific model year).
Carburetor Model:
Keihin CVK34 (typical for this era).
Fuel Tank Capacity:
Approximately 10.7 liters (2.8 US gallons).
Oil Capacity With Filter Change:
Approximately 1.7 liters (1.8 US qt) (check manual for exact specification).
Safety Ratings:
Motorcycles of this era were not subject to standardized crash testing like automobiles. Safety is primarily defined by rider control and braking effectiveness.
Braking System:
Hydraulic disc brakes front and rear provide effective stopping power.
Suspension Geometry:
Long-travel, adjustable suspension contributes to stability and control over varied terrain.
Lighting:
Headlight, taillight, and brake light for visibility.
Chassis Design:
Strong, rigid frame designed to handle off-road stresses.
Oil Change Interval:
Every 3,000 km (1,800 miles) or 6 months (check manual for precise interval).
Air Filter Cleaning:
Every 1,000 km (600 miles) or as needed depending on riding conditions (check manual).
Spark Plug Check:
Every 3,000 km (1,800 miles) (check manual for exact interval and gap).
Chain Adjustment:
Every 1,000 km (600 miles) or as needed to maintain proper slack (check manual).
Engine Oil Type:
API SE or SF, SAE 10W-40 motorcycle oil. (Verify with manual).
Coolant Type:
Permanent type coolant (ethylene glycol based) mixed with distilled water in a 50:50 ratio. (Verify with manual).
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid. (Verify with manual).
Carburetor Stalling:
Potential for fuel mixture issues or vacuum leaks causing rough idling or stalling, especially with age. Requires careful cleaning and adjustment.
Suspension Seals:
Worn fork seals can lead to oil leaks. Regular inspection and replacement is recommended.
Clutch Slippage:
With high mileage or aggressive use, clutch plates may wear, leading to slippage. Requires clutch pack replacement.
Electrical Connections:
Corroded or loose electrical connections can cause intermittent issues with lights or starting. Regular inspection and dielectric grease application is beneficial.