Segment:
High-performance Japanese sport touring motorcycle of its era.
Competitors:
Yamaha XJ1100 Maxim, Kawasaki Z1000J/R, Honda CB1100F.
Engine Type:
Air-cooled, DOHC, inline-four cylinder engine.
Performance Focus:
Emphasis on torque and horsepower for comfortable touring and spirited riding.
Design Era:
Represents the pinnacle of air-cooled motorcycle technology before the widespread adoption of liquid cooling.
Primary Coverage:
Comprehensive repair and service procedures for the Suzuki GS1150 motorcycle.
Secondary Coverage:
Maintenance, adjustments, troubleshooting, and specifications.
Estimated Page Count:
Approximately 300-400 pages (typical for a factory service manual of this era).
Type:
Factory Service Manual / Repair Manual
Format:
Print (Original Factory Publication)
Engine:
Engine overhaul, disassembly, assembly, tuning, lubrication, cooling system, fuel system (carburetors).
Transmission:
Gearbox disassembly, assembly, inspection, lubrication, clutch operation.
Chassis:
Frame inspection, suspension (front fork, rear shock absorber), steering, wheels, bearings.
Brakes:
Hydraulic front and rear brake systems, caliper overhaul, master cylinder, brake fluid specifications.
Electrical:
Ignition system, charging system (alternator, battery), starting system, lighting, wiring diagrams, component testing.
Fuel System:
Mikuni VM carburetors (likely VM29 or similar), fuel tank, petcock, fuel lines.
Exhaust System:
Exhaust pipe and muffler removal/installation, gasket replacement.
Bodywork:
Fairing, fuel tank, seat, side covers, fenders removal and installation.
Maintenance:
Routine checks, lubrication points, filter replacements, valve clearance adjustment.
Repair:
Step-by-step instructions for disassembly, cleaning, inspection, and reassembly of all major components.
Troubleshooting:
Diagnostic charts and procedures for identifying and rectifying common problems.
Adjustments:
Carburetor synchronization, idle speed adjustment, clutch and brake lever adjustments, suspension settings.
Specifications:
Torque values, clearances, fluid capacities, electrical resistance values, performance data.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and gearbox rebuilds.
Digital Format:
N/A (typically sold as a printed manual)
Quality:
High-quality factory printing, often with durable binding for workshop use.
Binding:
Stapled or perfect bound (factory original)
Paper Quality:
Durable, often glossy or semi-gloss paper stock to withstand workshop environments.
Engine Type:
Inline-four, four-stroke, DOHC, air-cooled
Displacement:
1135 cc (approx.)
Bore X Stroke:
74.0 mm x 64.5 mm (typical for this engine family)
Compression Ratio:
9.0:1 (typical)
Valve Train:
DOHC, 2 valves per cylinder
Horsepower:
Approx. 105-115 HP @ 8000-8500 RPM (estimated, unconfirmed by product data)
Torque:
Approx. 90-95 Nm @ 6500-7000 RPM (estimated, unconfirmed by product data)
Carburetors:
4 x Mikuni VM29 (likely) constant velocity carburetors
Fuel Capacity:
Approx. 20 liters (5.3 US gal)
Oil Capacity:
Approx. 3.0 - 3.5 liters with filter change (typical)
Oil Type:
API SE or SF, SAE 10W-40 or 20W-50 motorcycle specific oil (refer to manual for exact spec)
Transmission Type:
5-speed constant mesh
Final Drive:
O-ring sealed chain
Clutch Type:
Wet multi-plate
Gear Ratios:
Specific gear ratios would be detailed in the manual, critical for performance tuning.
Transmission Oil Capacity:
Approx. 1.5 - 2.0 liters (typical, refer to manual)
Transmission Oil Type:
API GL-1 or GL-4 SAE 80W-90 gear oil (refer to manual for exact spec)
Crash Test Data:
N/A (Motorcycle safety is assessed differently than automobiles; specific impacts or handling characteristics are key).
Braking System:
Dual front disc brakes, single rear disc brake. Dual-piston calipers (likely).
Suspension Design:
Telescopic front fork with anti-dive mechanism (Suzuki TSCC - Two-Stroke Combustion Control), dual rear shock absorbers with adjustable preload.
Lighting:
Halogen headlight, multi-reflector taillight, amber turn signals.
Frame Construction:
Steel double-cradle frame for stability and rigidity.
Dashboard:
Analog speedometer, tachometer, fuel gauge, indicator lights, odometer, trip meter.
Anti Dive System:
Suzuki's TSCC (Torque Secondary Combusted-charge) system in the front forks to mitigate brake dive.
Connectivity Features:
N/A (No electronic connectivity features common to modern vehicles).
Oil Change:
Every 3,000-4,000 km (or 6 months) (typical, consult manual for precise interval).
Valve Adjustment:
Every 6,000-8,000 km (typical, consult manual).
Spark Plug Replacement:
Every 12,000-16,000 km (typical).
Air Filter Cleaning:
Every 3,000-5,000 km (more frequently in dusty conditions).
Brake Fluid:
DOT 3 or DOT 4 (refer to manual for exact specification).
Coolant:
N/A (Air-cooled engine)
Carburetor Issues:
Gumming from old fuel, synchronization drift, jet clogging.
Electrical Component Wear:
Age-related failure of ignition coils, regulator/rectifier, starter motor brushes.
Suspension Seals:
Leaking fork seals and rear shock seals due to age.
Camchain Tensioner:
Potential for wear or failure leading to noise or damage.
Heritage:
Suzuki has a long history in motorcycle manufacturing, known for performance and innovative engineering.
Predecessors:
GS1000, GSX1100E/EF, prior air-cooled inline-fours.
Successors:
GSX-R series, more advanced liquid-cooled sportbikes.
Manufacturing Location:
Japan
Production Period:
Mid-1980s (1984-1986 for the GS1150EF variant).
