Motorcycle Segment:
The GSX250F (Katana) was a sport-oriented motorcycle in the quarter-liter class, appealing to riders seeking accessible performance and distinctive styling.
Competitors 1992:
Competed against models like the Honda CBR250RR, Kawasaki ZXR250, and Yamaha FZR250, all offering similar displacement and sporty characteristics.
Unique Selling Points:
Distinctive Katana styling, efficient 250cc four-cylinder engine, capable handling for its class.
Intended Audience:
Mechanics and DIY owners for repair, maintenance, and adjustments.
Engine Mechanical:
Detailed disassembly, assembly, inspection, and repair of engine components including cylinder head, pistons, crankshaft, camshafts, valves, timing system, and lubrication.
Fuel System:
Carburetor adjustment, cleaning, overhaul, fuel pump, fuel lines, and fuel tank inspection.
Ignition System:
Spark plugs, ignition coils, CDI unit, timing checks, and troubleshooting.
Cooling System:
Radiator, coolant, thermostat, hoses, and fan inspection and replacement.
Exhaust System:
Exhaust pipes, muffler inspection, and replacement.
Transmission:
Clutch operation, gear shifting mechanism, transmission disassembly and assembly, and lubricant specifications.
Chassis And Suspension:
Front forks, rear shock absorber, swingarm, steering system, and wheel bearing maintenance and adjustment.
Brakes:
Front and rear brake systems (likely disc brakes), caliper overhaul, fluid replacement, bleeding procedures, and pad inspection.
Electrical System:
Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), lighting system, starter motor, and fuses.
Bodywork And Frame:
Fairing removal and installation, seat, fuel tank, and frame inspection.
Troubleshooting:
Diagnostic flowcharts and common problem identification for various systems.
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, lubrication points, and spark plug checks.
Component Overhaul:
Complete rebuild procedures for engine, carburetors, brake calipers, and suspension components.
Troubleshooting Diagnostics:
Step-by-step diagnostic procedures for identifying and resolving mechanical and electrical issues.
Adjustment Procedures:
Carburetor synchronization, clutch lever adjustment, and suspension pre-load settings.
Depth:
Comprehensive, suitable for both experienced mechanics and DIY enthusiasts. Covers from basic maintenance to complete engine rebuilds.
Digital Format If Applicable:
PDF (searchable text, printable pages, high-resolution diagrams).
Print Quality If Printed:
High-quality printing with clear diagrams, schematics, and text.
Binding Type If Printed:
Professional binding (e.g., comb binding, saddle stitch, perfect binding) for durability and ease of use in a workshop environment.
Paper Type If Printed:
Durable paper stock resistant to grease and workshop contaminants.
Engine Type:
Liquid-cooled, four-stroke, DOHC, inline-four cylinder.
Displacement:
249 cc (15.2 cu. in.)
Bore X Stroke:
50.0 mm x 63.0 mm (typical for this engine family).
Compression Ratio:
Approximately 11.0:1 (typical for the era).
Horsepower:
Approximately 45-50 PS (33-37 kW) at peak RPM (subject to regional restrictions).
Torque:
Approximately 25-28 Nm (18-20 lb-ft) at peak RPM.
Carburetors:
Four Mikuni VM24SS or similar downdraft carburetors.
Fuel Type:
Unleaded gasoline (91 octane or higher recommended).
Oil Capacity:
Approximately 2.0-2.5 liters (including filter, subject to exact manual specification).
Oil Type:
API SE, SF, or SG grade motorcycle oil with JASO MA specification, viscosity 10W-40 or 20W-50 depending on ambient temperature.
Safety Features:
Reflective elements on tires and bodywork, reliable braking system, stable chassis design.
Braking System:
Front: Hydraulic disc brake; Rear: Hydraulic disc brake.
Lighting:
Halogen headlight, taillight, brake lights, turn signals.
Frame Construction:
Steel diamond frame for rigidity and rider feedback.
Instrument Cluster:
Analog speedometer, tachometer, odometer, trip meter, and indicator lights (turn signals, high beam, neutral, oil pressure).
ABS Availability:
ABS was not a standard or widely available option on this model in 1992.
Connectivity Features:
No digital connectivity features; entirely mechanical and electrical systems.
Oil Change Interval:
Every 3,000-5,000 km (1,800-3,000 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 5,000-8,000 km (3,000-5,000 miles), replacement as needed.
Spark Plug Replacement:
Every 10,000-15,000 km (6,000-9,000 miles).
Valve Clearance Check:
Every 10,000-15,000 km (6,000-9,000 miles).
Chain Lubrication Adjustment:
Every 1,000 km (600 miles) or after washing/rain, adjust as needed.
Brake Fluid:
DOT 3 or DOT 4 hydraulic brake fluid.
Coolant Type:
Mixture of ethylene glycol-based antifreeze and distilled water (50/50 ratio).
Common Wear Items:
Clutch plates, fork seals, carburetor diaphragms, wheel bearings, brake pads, and chain/sprockets are common wear items requiring periodic inspection and replacement.
Electrical Gremlins:
As with many motorcycles of this era, aging wiring harness connectors and regulator/rectifier units can sometimes develop issues.
Carburetor Tuning:
Carburetors may require periodic cleaning and synchronization to maintain optimal performance and fuel efficiency.
Suzuki Motorcycles:
Suzuki has a long history of producing innovative and performance-oriented motorcycles, including iconic sportbikes and versatile commuters.
Gsx Lineage:
The GSX series represents Suzuki's commitment to inline-four engine technology, evolving from earlier models to incorporate advanced features and styling.
Gsx250F Specifics:
The GSX250F 'Katana' design was inspired by the iconic larger Katana models, offering a smaller displacement, more accessible sportbike package.
Production Years:
The GSX250F was produced in the early to mid-1990s, with the 1992 model being a significant iteration.
