Segment:
Middleweight Sportbike/Naked Sportbike
Target Audience:
Riders seeking a capable, sporty yet versatile motorcycle for commuting, sport touring, and spirited riding.
Competitors:
Honda CB400 Super Four, Yamaha XJR400, Kawasaki Zephyr 400, Ducati Monster 400 (in some markets)
Engine:
Liquid-cooled, DOHC, inline-four cylinder engine, known for its smooth power delivery and responsiveness.
Styling:
Classic naked sportbike aesthetic with a distinctive bikini fairing for a touch of sportiness.
Performance:
Good balance of power and handling for its class, suitable for both urban agility and open road cruising.
Maintenance:
Generally reliable with accessible components for maintenance, making a good quality service manual invaluable.
Engine:
Disassembly, assembly, tuning, component specifications, troubleshooting
Fuel Delivery:
Carburetor tuning, jetting, float levels, fuel pump (if applicable), fuel filter replacement
Ignition System:
Spark plug specifications, timing adjustment, coil testing, CDI unit troubleshooting
Cooling System:
Radiator, fan operation, thermostat, coolant specifications and capacity
Transmission And Drivetrain:
Clutch operation, gearbox disassembly and assembly, shift mechanism, final drive (chain and sprockets)
Suspension Front:
Fork oil type and level, seal replacement, spring rates, damping adjustments
Suspension Rear:
Shock absorber service, spring preload adjustment, linkage maintenance
Braking System Front:
Caliper overhaul, pad replacement, fluid flush, master cylinder service
Braking System Rear:
Caliper overhaul, pad replacement, fluid flush, master cylinder service
Electrical System:
Battery specifications, starter motor, charging system (alternator/stator), lighting, horn, instrumentation
Wiring Diagrams:
Detailed color-coded wiring schematics for all circuits
Frame And Bodywork:
Frame inspection, fairing removal and installation, seat, fuel tank mounting
Wheels And Tires:
Tire pressures, wheel bearing service, rim specifications
Routine Maintenance:
Oil changes, filter replacements, chain adjustment, lubrication points
Major Service:
Valve clearance adjustment, carburetor synchronization, comprehensive inspections
Engine Rebuild:
Piston and ring replacement, cylinder honing, crankshaft and connecting rod inspection, camshaft service
Transmission Overhaul:
Gear inspection, bearing replacement, seal replacement
Fork Rebuild:
Seal and bushing replacement, oil replacement
Brake System Repair:
Caliper piston seal replacement, bleeding procedures
Electrical Troubleshooting:
Diagnostic flowcharts, component testing methods
Carburetor Tuning:
Idle speed adjustment, jetting changes for altitude/modifications
Timing Adjustment:
Ignition timing checks and adjustments
Depth:
Comprehensive, suitable for DIY enthusiasts and professional mechanics. Covers everything from basic fluid changes to complete engine and transmission rebuilds.
Type:
Inline 4-cylinder, 4-stroke, DOHC, 16-valve
Bore X Stroke:
53.0 mm x 45.2 mm
Compression Ratio:
11.5:1
Cooling System:
Liquid-cooled
Horsepower:
Approx. 53 HP @ 12,000 RPM (Manufacturer's claimed figure, may vary)
Torque:
Approx. 36 Nm @ 10,000 RPM (Manufacturer's claimed figure, may vary)
Carburetion:
4x Mikuni CV carburetors (likely B26 type)
Fuel Type:
Unleaded gasoline
Fuel Capacity:
Approx. 17 Liters (check manual for exact specification)
Oil Change:
Every 6,000 km or 6 months (typical for this era, consult manual for exact interval)
Air Filter:
Inspect every 6,000 km, replace as needed (consult manual)
Valve Clearance:
Every 12,000 km or 1 year (typical, verify in manual)
Spark Plugs:
Replace every 12,000 km (typical, consult manual for specific plug type and gap)
Chain Maintenance:
Lubricate and adjust every 1,000 km or as needed (check tension specifications)
Engine Oil:
Suzuki recommends SAE 10W-40 API SE, SF or SG type (API SJ or higher compatible). Check manual for exact API classification and viscosity index requirements.
Engine Oil Capacity:
Approx. 3.2 Liters without filter change, 3.4 Liters with filter change (verify in manual)
Coolant:
Ethylene glycol based antifreeze, 50/50 mix with distilled water (check manual for specific type and capacity)
Fork Oil:
TBD (Consult manual for specific viscosity grade and fill volume, typically 10W fork oil)
Electrical Connectors:
Corrosion or loose connections in high-vibration areas can cause intermittent electrical issues. Regular inspection and dielectric grease are recommended.
Carburetor Sync:
Carburetors can go out of sync, leading to rough idle and poor throttle response. Regular synchronization is key.
Fuel Petcock:
Diaphragm failure in the vacuum-operated petcock can lead to fuel leaks or engine starting issues.
Cam Chain Tensioner:
Some Bandit models may experience a noisy cam chain tensioner over time. Manual adjustment or replacement might be needed.
Manufacturer:
Suzuki Motor Corporation, a Japanese multinational corporation known for its wide range of products including motorcycles, automobiles, and marine engines.
Gsf400 Lineage:
The GSF400 Bandit was part of Suzuki's Bandit series, introduced in the late 1980s and early 1990s, aiming to offer a blend of performance and practicality in the middleweight naked bike segment. The '97 model represents an evolution with updated styling and potentially minor mechanical refinements.
Years:
The GSF400 Bandit was primarily produced from 1989 to 1995 for the Japanese domestic market (JDM), with some export markets receiving variations. The 1997 mention in the product name might refer to a specific market's continued availability or a common service period.
