Era:
Late 1970s / Early 1980s performance motorcycle segment
Target Audience:
Enthusiasts and owners seeking detailed technical information for maintenance, repair, and restoration of the Suzuki GS1000.
Competitors:
Honda CB750, Kawasaki KZ1000, Yamaha XS1100
Differentiation:
Suzuki's GS series was known for its robust engineering and performance, often competing directly with the top-tier offerings from its Japanese rivals.
Features:
Powerful inline-four engine, shaft drive, advanced (for its time) suspension and braking systems.
Systems Covered:
Engine, Fuel System, Ignition System, Transmission, Drivetrain, Chassis, Suspension, Brakes, Electrical System, Bodywork, Troubleshooting, Maintenance, Specifications
Type:
Service and Repair Manual
Format:
PDF (delivered as ZIP archive)
Engine:
Complete overhaul, disassembly, assembly, lubrication, cooling system, oil pump, cylinder head, valves, pistons, crankshaft, connecting rods, timing chain.
Fuel System:
Carburetor identification and adjustment (Mikuni VM Series), fuel tank, fuel pump, fuel lines, filter replacement.
Ignition System:
CDI system, ignition timing, spark plugs, coils, pickup coils, electronic control unit (ECU).
Transmission:
Clutch operation and adjustment, gearbox disassembly and assembly, gear shift mechanism, transmission oil specifications.
Drivetrain:
Shaft drive system, universal joints, final drive gears, lubrication, maintenance.
Chassis:
Frame inspection, steering head bearing adjustment, fork removal and installation, shock absorber adjustment and replacement.
Suspension:
Front fork service (oil change, seal replacement), rear shock absorber overhaul, spring preload adjustment.
Brakes:
Front and rear brake systems (disc brakes), caliper overhaul, brake fluid replacement, bleeding procedure, pad replacement, master cylinder service.
Electrical System:
Wiring diagrams, battery maintenance, charging system (alternator, rectifier/regulator), lighting system, horn, starter motor, fuses, switches.
Bodywork:
Fairing removal and installation, seat, fuel tank, fenders, handlebars, instrument cluster.
Maintenance:
Scheduled maintenance intervals, oil and filter changes, air filter cleaning/replacement, spark plug checks, chain adjustment (if applicable), brake adjustments, lubrication points.
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides, electrical system fault finding.
Repair:
Detailed step-by-step repair instructions for all major components and systems, including engine rebuilds, transmission overhauls, and suspension repairs.
Installation:
Instructions for installing accessories and replacement parts.
Depth:
Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds. Includes detailed torque specifications, clearances, and diagnostic charts.
Engine Type:
Air-cooled, four-stroke, DOHC, inline-four
Displacement:
997.7 cc (60.89 cubic inches)
Bore X Stroke:
70.0 mm x 64.5 mm (2.76 in x 2.54 in)
Valvetrain:
DOHC, 2 valves per cylinder
Cooling System:
Air-cooled
Horsepower Claimed:
Approximately 72-78 HP at 7,000 RPM (varies slightly by specific model variant and tuning)
Torque Claimed:
Approximately 75-80 Nm (55-59 lb-ft) at 6,000 RPM
Carburetion:
4 x Mikuni VM Series Constant Velocity (CV) carburetors, 32mm diameter
Fuel Type:
Unleaded gasoline, minimum 87 octane (RON+MON)/2
Fuel Tank Capacity:
19.0 Liters (5.0 US gal)
Transmission Type:
5-speed constant mesh
Clutch Type:
Wet, multi-plate
Gear Ratios:
Specific ratios detailed in manual (e.g., 1st: 2.5, 2nd: 1.78, 3rd: 1.38, 4th: 1.17, 5th: 1.0)
Transmission Oil Type:
API GL-4, SAE 80 or 90 gear oil
Transmission Oil Capacity:
Approximately 1.5 Liters (1.6 US qt)
Length:
Approximately 2,180 mm (85.8 in)
Width:
Approximately 800 mm (31.5 in)
Height:
Approximately 1,220 mm (48.0 in)
Wheelbase:
Approximately 1,475 mm (58.1 in)
Dry Weight:
Approximately 235 kg (518 lbs)
Gross Vehicle Weight Rating Gvwr:
Not explicitly stated, consult manual for load limits.
Front Tire Size:
3.75-19 or 100/90-19
Rear Tire Size:
4.00-18 or 110/90-18
Front Wheel:
19-inch spoke wheel
Rear Wheel:
18-inch spoke wheel
Safety Ratings:
Not applicable (motorcycles are not rated by consumer safety organizations in the same way as cars).
Braking System:
Dual front hydraulic disc brakes, single rear hydraulic disc brake.
Suspension Features:
Adjustable front forks, adjustable rear shock absorbers (preload and damping on some models).
Lighting:
Halogen headlamp, tail lamp, brake light, turn signals.
Frame Construction:
Double-cradle steel frame for rigidity and stability.
Infotainment System:
None (Classic motorcycle design).
Driver Assistance Systems:
None (Classic motorcycle design).
Connectivity Options:
None (Classic motorcycle design).
Instrument Cluster:
Analog speedometer, tachometer, fuel gauge (on some models), indicator lights for turn signals, high beam, oil pressure, neutral.
Oil Change Interval:
Every 3,000-5,000 km (1,800-3,000 miles) or 6 months, whichever comes first.
Air Filter Cleaning:
Every 3,000-5,000 km (1,800-3,000 miles), replace as needed.
Spark Plug Check:
Every 5,000-10,000 km (3,000-6,000 miles).
Valve Clearance Check:
Every 10,000-15,000 km (6,000-9,000 miles).
Brake Fluid Replacement:
Every 12-24 months or as recommended by manual.
Engine Oil Type:
API SE or SF, SAE 10W-40 or 10W-50 motorcycle-specific oil.
Engine Oil Capacity:
Approximately 3.8 Liters (4.0 US qt) with filter change.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Common Problems:
Carburetor synchronization drift, cam chain tensioner wear, charging system component failure (rectifier/regulator), potential for oil leaks from seals.
Electrical Component Aging:
Due to age, wiring insulation can degrade, and electrical connectors may corrode, leading to intermittent issues. Regular inspection and cleaning are crucial.
Manufacturer:
Suzuki Motor Corporation, Japan.
Founding:
Suzuki was founded in 1909.
Predecessors:
GS750, GS850G.
Successors:
GSX series (e.g., GSX1100).
Gs Series Impact:
The GS series was a pivotal line for Suzuki, establishing their reputation in the large-displacement motorcycle market.
Production Years:
1978-1983 (for the GS1000 model range).
Variants:
GS1000E, GS1000L, GS1000S (Cocoon).
