Market Position:
High-performance sportbike of its era, known for its powerful engine and sporty handling.
Competitive Analysis:
Competed directly with other large-displacement sportbikes of the late 70s and early 80s, offering a blend of power and sport-oriented features.
Key Features:
DOHC inline-four engine, shaft drive, advanced suspension, distinctive fairing design.
Historical Context:
Represents a peak in Japanese motorcycle engineering of the late 1970s, pushing performance boundaries for street motorcycles.
Systems Covered:
Engine, Drivetrain, Chassis, Electrical System, Fuel System, Ignition System, Cooling System, Braking System, Suspension System, Wheels and Tires, Bodywork, Lubrication System, Troubleshooting, Specifications
Electrical System Details:
Detailed wiring diagrams, component testing procedures, troubleshooting for lighting, ignition, charging system, and starting system.
Fuel Ignition System Details:
Detailed carburetor overhaul, jetting information, ignition timing adjustments, CDI unit testing.
Procedures Included:
Routine Maintenance, Troubleshooting, Engine Overhaul, Carburetor Tuning, Electrical System Diagnosis, Brake Service, Suspension Adjustments, Clutch Service, Transmission Overhaul, Wiring Diagrams
Engine Rebuild Procedures:
Step-by-step instructions for engine disassembly, inspection, component replacement (pistons, rings, bearings, valves), and reassembly with torque specifications.
Suspension Service:
Front fork oil change and seal replacement, rear shock absorber inspection and replacement procedures.
Technical Depth:
Comprehensive (from basic maintenance to complete engine and electrical system rebuilds)
Diagnostic Procedures:
Includes specific diagnostic trees and troubleshooting guides for common performance issues, electrical faults, and mechanical problems.
Engine Type:
Air-cooled, 4-stroke, DOHC, inline 4-cylinder
Displacement:
997 cc (60.8 cu in)
Bore X Stroke:
74 mm x 58 mm (2.9 in x 2.3 in)
Valve Train:
DOHC, 2 valves per cylinder
Power Per Liter:
Approx. 90.3 hp/liter
Horsepower:
Approx. 90 HP (67 kW) @ 8,000 RPM (claimed)
Torque:
Approx. 77 Nm (57 lb-ft) @ 7,000 RPM (claimed)
Top Speed:
Approx. 200 km/h (125 mph) (depending on rider and conditions)
Carburetors:
4 x Mikuni VM29SS (sliding throttle valve type)
Fuel Tank Capacity:
22 Liters (5.8 US gal)
Fuel Type:
Unleaded gasoline, 91-95 octane
Ignition System:
CDI (Capacitor Discharge Ignition)
Lubrication Type:
Wet sump
Cooling System:
Air-cooled
Oil Change Interval:
Every 3,000 km or 6 months
Valve Clearance Check:
Every 6,000 km
Engine Oil Type:
API SE, SAE 10W-40 (or as per manual recommendation)
Engine Oil Capacity:
Approx. 3.4 Liters (with filter change)
Brake Fluid Type:
DOT 3 or DOT 4
Final Drive Oil Type:
SAE 80 API GL-4 Gear Oil
Coolant Type:
N/A (Air-cooled)
Known Issues:
Cam chain tensioner wear, potential for carburetor synchronization drift, aging electrical connectors, rear shock absorber degradation.
Brand Heritage:
Suzuki has a long history of building high-performance motorcycles, with a strong reputation for innovative engine technology and reliability.
Model Evolution:
The GS1000S was part of Suzuki's successful GS series, which transitioned from the early GS750 and GS1000 models, introducing more sport-oriented features and a distinctive fairing.
Market Impact:
Established Suzuki's reputation in the large-displacement sportbike category, influencing future models.
Production Years:
1978-1981 (GS1000 series)