Category:
Sportbike / Naked Bike
Competitors:
Yamaha FZR250, Kawasaki ZZR-250 (ZZ-R250), Honda CBR250R (MC19/MC22).
Engine Type:
Liquid-cooled, DOHC, inline-four cylinder engine, a hallmark of Suzuki's performance motorcycles of the era.
Design Philosophy:
Designed as a lightweight, agile, and performance-oriented 250cc sportbike, often referred to as a 'baby GSX-R'.
Engine:
Full engine overhaul, internal components, lubrication system, cooling system (if applicable), fuel system (carburetor/injection), ignition system, exhaust system.
Transmission:
Clutch, gearbox, shift mechanism, final drive (chain/sprockets).
Chassis And Frame:
Frame inspection and repair, suspension (front forks, rear shock absorber), steering system.
Brakes:
Front and rear brake systems (disc/drum), hydraulic lines, master cylinders, calipers, bleeding procedures.
Electrical System:
Wiring diagrams, battery, charging system (stator, regulator/rectifier), lighting, ignition coil, starter motor, indicators, instruments.
Fuel System:
Carburetor identification, disassembly, cleaning, adjustment, fuel tank, fuel lines, petcock.
Bodywork And Trim:
Fairings, tank cover, seat, fenders, minor body panel removal and installation.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug checks, chain adjustment, brake fluid checks, coolant checks (if applicable).
Troubleshooting:
Diagnostic procedures for common starting, running, electrical, and performance issues.
Repair:
Step-by-step instructions for component repair and replacement, including complete engine rebuilds and transmission overhauls.
Installation Removal:
Detailed procedures for removing and reinstalling all major components and sub-assemblies.
Adjustments:
Carburetor synchronization, valve clearance adjustment, brake lever adjustments, chain slack adjustment.
Depth:
Comprehensive, from basic maintenance to full engine and transmission rebuilds. Includes detailed specifications, torque values, and diagnostic information.
Engine Type:
4-stroke, Liquid-cooled, DOHC, 4-valve per cylinder, Inline-4
Displacement:
248 cc (15.1 cu in)
Bore X Stroke:
49.0 mm x 66.0 mm (approximate)
Compression Ratio:
11.5:1 (typical for the era)
Horsepower:
Approximately 45-48 PS (33-35 kW) at 13,000 RPM (specifications can vary slightly by market and tuning).
Torque:
Approximately 26-28 Nm (19-21 lb-ft) at 10,000 RPM (approximate).
Carburetion:
Twin Mikuni CV carburetors (e.g., VM26SS or similar) or similar downdraft carburetors.
Fuel Tank Capacity:
Approximately 13-15 liters (3.4-4.0 US gal)
Dashboard:
Analog tachometer, speedometer, fuel gauge (may be optional or integrated), indicator lights.
ABS:
Anti-lock Braking System (ABS) was not commonly available on this class of motorcycle in this era.
Smartphone Integration:
Not applicable for this model and era.
Oil Change Interval:
Typically every 3,000-5,000 km (1,800-3,000 miles) or 6 months, refer to manual for precise intervals.
Valve Clearance Check:
Typically every 10,000-15,000 km (6,000-9,000 miles), crucial for engine performance and longevity.
Engine Oil:
Refer to manual for specific viscosity grade (e.g., 10W-40 or 20W-50, API SG or higher) and capacity (approx. 2.5-3.0 liters with filter).
Brake Fluid:
DOT 3 or DOT 4, replace every 2 years or as per manual.
Coolant:
If liquid-cooled, typically a 50/50 mix of ethylene glycol coolant and distilled water. Capacity varies, refer to manual.
Carburetor Issues:
Carburetors can become gummed up if the bike sits for extended periods, requiring cleaning and synchronization. Common for older fuel systems.
Electrical Gremlins:
Aging wiring harnesses, regulator/rectifier failures, and stator issues can occur in older motorcycles. Thorough diagnosis is key.
Suspension Wear:
Fork seals can leak, and rear shock absorbers may lose damping over time, affecting ride quality and handling.
Engine Vibrations:
While an inline-four is generally smooth, excessive vibration could indicate engine tuning issues or internal wear.
Heritage:
Suzuki has a long history of producing high-performance motorcycles, particularly with its GSX-R line, establishing a reputation for engineering and speed.
Evolution:
The GSX250 was part of Suzuki's strategy to offer a competitive 250cc sportbike segment, building on the GSX-R lineage with a focus on performance and rider engagement.
Production Period:
The GSX250 was produced primarily in the late 1980s and early 1990s.
