Positioning:
The GSF400 Bandit was positioned as a mid-size, performance-oriented naked sportbike, offering a balance of power and handling in its class.
Competitors:
Competed against other 400cc class motorcycles from manufacturers like Kawasaki (Zephyr 400), Yamaha (XJR400), and Honda (CB400 Super Four) in markets where these were available, particularly Japan.
Engine Type:
DOHC inline-four engine, known for its smooth power delivery and rev-happy nature.
Chassis Design:
Steel twin-spar frame providing rigidity and good handling characteristics.
Styling:
Classic naked bike aesthetic with minimal fairings, showcasing the engine and mechanical components.
Primary Coverage:
Suzuki GSF400 Bandit (GK75A chassis code)
Secondary Coverage:
Applicable to 1992 model year; may contain some information relevant to adjacent years.
Type:
Factory Service Repair Manual
Format:
Digital (likely PDF, based on typical offerings)
Engine:
Complete engine overhaul, disassembly, assembly, tuning, lubrication, cooling system.
Fuel System:
Carburetor service, inspection, adjustment, fuel pump, fuel lines.
Transmission:
Clutch, gearbox disassembly/assembly, shifting mechanism, lubrication.
Chassis And Suspension:
Front fork service, rear shock absorber, swingarm, steering head bearings, wheel bearings.
Brakes:
Front and rear brake systems, hydraulic lines, caliper service, master cylinder, brake fluid specifications.
Electrical System:
Ignition system, lighting, starting system, charging system, wiring diagrams, fuses, relays.
Bodywork:
Fairing removal/installation, seat, fuel tank, fender components.
Troubleshooting:
Diagnostic charts, common problems and solutions for various systems.
Maintenance:
Regular servicing, oil changes, filter replacements, chain adjustment, spark plug replacement.
Repair:
Component-level repair, rebuilding procedures for major systems.
Disassembly Assembly:
Step-by-step instructions for removing and reinstalling parts and assemblies.
Inspection And Adjustment:
Procedures for checking wear, calibration, and making necessary adjustments.
Depth:
Comprehensive, covering routine maintenance to major engine and component overhauls.
Diagnostic Capabilities:
Detailed troubleshooting guides with diagnostic trees and symptom-based solutions.
Engine Type:
Liquid-cooled, 4-stroke, DOHC, inline-four
Bore X Stroke:
56.0 mm x 40.4 mm
Compression Ratio:
11.5:1
Horsepower:
Approximately 53 PS (39 kW) @ 11,000 rpm (depending on market and tuning)
Torque:
Approximately 3.8 kg-m (37 Nm) @ 9,000 rpm (depending on market and tuning)
Carburetion:
Mikuni BS30 carbs (likely 4x 30mm)
Fuel Capacity:
15 Liters (3.3 Gallons)
Length:
Approx. 2055 mm (80.9 in)
Width:
Approx. 775 mm (30.5 in)
Height:
Approx. 1045 mm (41.1 in)
Wheelbase:
Approx. 1425 mm (56.1 in)
Ground Clearance:
Approx. 140 mm (5.5 in)
Dry Weight:
Approx. 160 kg (353 lbs)
Curb Weight:
Approx. 177 kg (390 lbs) (Wet, with fluids)
Safety Ratings:
N/A (Motorcycles typically do not have standardized crash test ratings like cars; safety is inherent in design and rider skill.)
Braking System:
Dual 290mm front discs with twin-piston calipers, Single 240mm rear disc with twin-piston caliper.
Suspension Features:
Front: Telescopic fork with adjustable preload. Rear: Monoshock with adjustable preload and rebound damping.
Lighting:
Halogen headlight, LED taillight (typical for the era).
Frame Design:
Sturdy steel twin-spar frame contributes to rider control and stability.
Infotainment System:
N/A (Basic motorcycle instrumentation: speedometer, tachometer, odometer, trip meter, fuel gauge, neutral indicator, oil pressure light).
Driver Assistance Features:
N/A (No electronic rider aids like ABS or traction control were standard on this model).
Oil Change Interval:
Every 4,000-6,000 km (2,500-3,700 miles) or 6 months, whichever comes first.
Valve Clearance Check:
Every 12,000-16,000 km (7,500-10,000 miles)
Spark Plug Replacement:
Every 8,000-12,000 km (5,000-7,500 miles)
Chain Lubrication Adjustment:
Every 500-800 km (300-500 miles)
Engine Oil Type:
SAE 10W-40 API SG or higher (e.g., Suzuki Performance Oil 4T 10W-40)
Engine Oil Capacity:
Approx. 3.4 Liters (3.6 US qt) with filter change
Coolant Type:
Ethylene glycol-based antifreeze (50% mixture with distilled water)
Fork Oil Type:
SUS 32 or equivalent (e.g., Showa SS-03)
Common Wear Items:
Cam chain tensioner (potential for rattling), clutch wear, carb synchronization drift.
Electrical Gremlins:
Corrosion in connectors, especially in humid climates; CDI unit reliability can be a concern in older units.
Performance Tuning:
Carburation requires careful tuning, especially if aftermarket exhausts or air filters are fitted.
Heritage:
Suzuki has a long history in motorcycle manufacturing, known for performance, reliability, and innovation across various classes, from street bikes to racing machines.
Bandit Lineage:
The Bandit series, introduced in the late 1980s, became popular for its blend of performance, versatility, and affordability. The GSF400 was part of this line, offering a smaller displacement option.
Production Period:
The GSF400 Bandit was primarily produced for the Japanese domestic market (JDM) and select other regions from the late 1980s into the early 2000s.
Manufacturing Location:
Japan
