Segment:
Sportbike / Hyperbike
Era Context:
Part of the 'open class' sportbike evolution, competing with Japanese and European liter-bikes of the 1990s
Key Rivals:
Honda CBR900RR Fireblade, Yamaha YZF750R, Kawasaki ZX-9R Ninja, Ducati 916
Engine Configuration:
Inline-four cylinder, DOHC, 16 valves
Power Delivery:
Known for strong mid-range torque and top-end power, offering a blend of street usability and track performance
Chassis Design:
Aluminum twin-spar frame, sophisticated suspension systems for its era
Engine Mechanical:
Complete overhaul, top end, bottom end, cylinder head, pistons, crankshaft, camshafts, valve train, timing system
Engine Fuel System:
Carburetor adjustment and rebuilding (Mikuni BDST36), fuel pump, fuel lines
Engine Ignition System:
Ignition timing, CDI unit, spark plugs, coils
Transmission Drivetrain:
Clutch operation and adjustment, gearbox overhaul, gear inspection, drive chain maintenance and adjustment
Chassis Frame:
Frame inspection, headstock bearings, swingarm maintenance
Suspension Front:
Fork disassembly, oil changes, seal replacement, spring inspection, damping adjustments
Suspension Rear:
Monoshock absorber servicing, linkage maintenance, spring preload adjustment
Brakes Front:
Caliper overhaul, piston replacement, pad replacement, disc inspection, bleeding procedure
Brakes Rear:
Caliper overhaul, pad replacement, disc inspection, bleeding procedure
Electrical System:
Wiring diagrams, charging system (stator, regulator/rectifier), battery maintenance, lighting system, starter motor, instrument cluster
Cooling System:
Radiator, coolant hoses, water pump, thermostat, fan operation
Exhaust System:
Exhaust pipe inspection, muffler maintenance
Bodywork Fittings:
Fairing removal and installation, seat, fuel tank, fenders
Maintenance:
Regular scheduled maintenance, oil changes, filter replacements, chain lubrication and adjustment, brake adjustments, coolant flush
Troubleshooting:
Diagnostic charts for common starting, running, and electrical issues
Repair:
Detailed step-by-step instructions for disassembly, assembly, and repair of all major components
Calibration Adjustment:
Carburetor synchronization, ignition timing checks, suspension setup
Level:
Comprehensive (covering routine maintenance to complete engine and chassis overhauls)
Detail Level:
Includes detailed specifications, torque values, diagnostic procedures, and exploded diagrams
Engine Type:
Four-stroke, liquid-cooled, DOHC, inline-four
Displacement:
937 cc (for most models)
Bore X Stroke:
73.0 mm x 55.0 mm
Compression Ratio:
11.3:1
Horsepower:
Approx. 125-135 PS (93-100 kW) at 10,000 rpm (claimed)
Torque:
Approx. 95-100 Nm (70-74 lb-ft) at 9,000 rpm (claimed)
Carburetion:
Four Mikuni BDST36 constant-velocity carburetors
Fuel Capacity:
21 Liters (5.5 US gallons)
Ignition Type:
Digital CDI (Capacitor Discharge Ignition)
Classification:
Sportbike (no formal crash ratings like cars)
Braking System:
Dual front disc brakes (320mm), single rear disc brake (240mm), typically 4-piston front calipers
Suspension Handling:
Adjustable front forks (preload, compression, rebound damping), adjustable rear monoshock with linkage
Lighting:
Halogen headlight, integrated tail/brake light, turn signals
Oil Change Interval:
Every 6,000 km (3,700 miles) or annually
Oil Filter Replacement:
Every 12,000 km (7,400 miles) or annually
Air Filter Cleaning:
Every 6,000 km (3,700 miles)
Spark Plug Replacement:
Every 12,000 km (7,400 miles)
Valve Clearance Check:
Every 24,000 km (14,900 miles)
Fork Oil Change:
Every 24,000 km (14,900 miles)
Engine Oil Type:
API SG or higher, JASO MA, SAE 10W-40 or 20W-50 (depending on ambient temperature)
Engine Oil Capacity:
3.5 Liters (3.7 US qt) with filter change, 3.3 Liters (3.5 US qt) without filter change
Coolant Type:
Ethylene glycol-based antifreeze and water mixture (50/50)
Coolant Capacity:
Approx. 2.0 Liters (2.1 US qt)
Fork Oil Type:
SAE 10W or 15W (refer to manual for specific weights)
Fork Oil Quantity:
Approx. 470 cc per fork leg (check manual for exact specifications)
Starter Clutch:
Some models may experience wear on the starter clutch mechanism, leading to a grinding noise on engine start.
Carburetor Sync:
Carburetors can go out of sync over time, affecting smooth idle and throttle response. Regular synchronization is recommended.
Cam Chain Tensioner:
The automatic cam chain tensioner can weaken, potentially causing a rattle from the engine, especially at idle. Manual replacement is a common fix.
Fairing Vibration:
Some owners report minor fairing vibrations at certain RPMs; typically addressed by checking mounting points and fasteners.
