1985 Suzuki GSX-R400 GK71B Service Repair Workshop Manual

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Art.-Nr: 135941

Stichworte: 1985 GK71B GSX Series GSX-R400 Motorcycle Motorcycles Suzuki

Produktvarianten

Beschreibung

This manual covers the 1985 Suzuki GSX-R400, chassis code GK71B. As an early entrant in Suzuki's renowned GSX-R sportbike lineage, this model is celebrated for its race-inspired engineering and performance-oriented design, predating its larger-displacement siblings. The GSX-R400 embodies the core principles of the GSX-R series, focusing on delivering a potent and agile riding experience. Its liquid-cooled, 4-stroke, DOHC 4-cylinder engine, displacing 398 cc, was engineered for spirited performance, complemented by a robust steel twin-spar frame and responsive suspension. This comprehensive Factory Service Repair Workshop Manual in English provides detailed information essential for the maintenance, repair, and diagnostics of your 1985 Suzuki GSX-R400 GK71B. It covers all major systems, including the engine, fuel system, lubrication, cooling, chassis, and electrical components, offering step-by-step instructions, exploded views, and troubleshooting guidance. The manual is designed to empower owners and mechanics alike, enabling them to perform everything from routine servicing and tune-ups to complete overhauls, ultimately ensuring the longevity and optimal performance of the motorcycle.

🏷️ Basic Information

Identification

Make:

Suzuki

Model:

GSX-R400

Year:

Chassis Code:

GK71B

👋 Introduction

Market Position

Target Audience:

Owners and mechanics of the 1985 Suzuki GSX-R400 GK71B seeking to perform maintenance, repair, and diagnostics.

Competitive Analysis

Value Proposition:

Provides factory-level repair information at a fraction of the cost of dealership services, enabling DIY maintenance and extending the life of the motorcycle.

Key Features

Features:

Easy-to-read text, high-quality diagrams, step-by-step instructions, exploded pictures, comprehensive coverage.

📋 Manual Details

Coverage Areas

Primary Coverage:

Complete service, repair, and workshop procedures

Page Count

Estimated Pages:

Detailed page count not specified, but indicated as comprehensive covering complete disassembly.

Manual Type

Type:

Factory Service Repair Workshop Manual

Language

Language:

English

Format

Format:

📖 Manual Coverage

Systems Covered

Engine:

Detailed overhaul, inspection, tuning, and component replacement

Fuel System:

Carburetor settings, fuel pump, fuel lines, and filtration

Lubrication System:

Oil pump, oil passages, oil filter, and oil change procedures

Cooling System:

Radiator, fan, coolant flow, thermostat, and water pump

Chassis:

Frame, suspension (front forks, rear shock absorber), steering, swingarm, wheels, and brakes

Electrical System:

Ignition system, lighting, charging system (stator, regulator/rectifier), starter motor, battery, wiring diagrams, and component testing

Procedures Included

Maintenance:

Periodic maintenance, tune-ups, fluid changes, and general servicing

Repair:

Step-by-step repair instructions for all major components and systems

Troubleshooting:

Diagnostic procedures and common issue resolution

Disassembly Assembly:

Complete disassembly and reassembly instructions with exploded views

Technical Depth

Depth:

Comprehensive, suitable for both DIY enthusiasts and experienced mechanics, with detailed diagrams and instructions for complete machine disassembly.

📊 Manual Specifications

File Format

Compatibility:

All Versions of Windows & Mac

Requirements:

Adobe PDF Reader & WinZip

Print Quality

Printability:

All pages are printable

Download Type

Delivery:

Instant Download, saving on postage and packaging

⚙️ Engine Specifications

Primary Engine

Engine Type:

Liquid-cooled, 4-stroke, DOHC, 4-cylinder

Displacement:

398 cc (24.3 cu. in.)

Performance

Bore X Stroke:

53.0 mm x 45.2 mm (2.09 in x 1.78 in) - typical for this model, refer to manual for exact specification

Horsepower:

Approx. 59 HP (44 kW) at 11,000 RPM (specifications vary by market, refer to manual for precise figure)

Torque:

Approx. 39 Nm (29 lb-ft) at 10,000 RPM (specifications vary by market, refer to manual for precise figure)

Fuel System

Carburetors:

Likely Mikuni CV-type carburetors (e.g., 32mm), refer to manual for exact model and configuration

Fuel Capacity:

Approx. 16 Liters (4.2 US gal), refer to manual for precise specification

🔧 Transmission

Standard

Type:

Constant mesh 6-speed

Features

Clutch:

Wet multi-plate

Final Drive:

Chain

📐 Dimensions

Exterior

Length:

Approx. 2065 mm (81.3 in), refer to manual for exact specification

Width:

Approx. 720 mm (28.3 in), refer to manual for exact specification

Height:

Approx. 1160 mm (45.7 in), refer to manual for exact specification

Weights

Dry Weight:

Approx. 170 kg (375 lbs), refer to manual for exact specification

Wet Weight:

Approx. 186 kg (410 lbs), refer to manual for exact specification

🛡️ Safety Features

Active Features

Braking Front:

Dual hydraulic disc brakes

Braking Rear:

Single hydraulic disc brake

Passive Features

Frame:

Steel twin-spar frame

💡 Technology Features

Infotainment

Instrumentation:

Analog tachometer, speedometer, fuel gauge, temperature gauge, and indicator lights. Likely lacks modern infotainment systems.

Driver Assistance

Features:

No electronic rider aids such as ABS or traction control; features are focused on core motorcycle performance.

Connectivity

Features:

🔧 Maintenance

Service Intervals

Oil Change:

Typically every 3,000-5,000 km (2,000-3,000 miles) or annually, refer to manual for exact interval and oil type.

Valve Clearance:

First check typically at 6,000-10,000 km, then periodically thereafter. Refer to manual for precise intervals and specifications.

Fluid Specifications

Engine Oil:

Refer to manual for specific viscosity (e.g., SAE 10W-40, API SG or higher) and capacity.

Coolant:

Mixture of ethylene glycol and distilled water, refer to manual for ratio and capacity.

Brake Fluid:

DOT 3 or DOT 4, refer to manual for specific type and replacement interval.

Known Issues

Common Wear Items:

Clutch wear, carburetor synchronization issues, fork seal leaks, timing chain noise, electrical connections (especially starter solenoid).

Typical Maintenance Focus:

Regular carburetor cleaning and synchronization, checking valve clearances, and ensuring proper cooling system function are critical for longevity.

📚 Vehicle History

Brand Heritage

Manufacturer:

Suzuki Motor Corporation

Model Evolution

Gsx R Lineage:

The 1985 GSX-R400 GK71B is an early model in Suzuki's highly influential GSX-R sportbike line, known for its race-inspired design and performance focus. It predates the more widely known GSX-R750 and GSX-R1100 models.

Production

Initial Production:

1984 (internally) / 1985 (market release for GK71B)

Market Availability:

Primarily Japan and select European markets; less common in North America.

🏆 Awards & Recognition

Recognitions

Market Impact:

While specific awards for the 1985 model might not be widely documented, the GSX-R series as a whole revolutionized the sportbike category, setting benchmarks for performance, handling, and rider ergonomics. The GK71B was instrumental in establishing this reputation.