🏷️ Basic Information

Make:

Suzuki

Model:

GS750

Year:

1976

Generation Designation:

GS750 (First Generation)

Engine Code:

GS750 (Model designation often tied to engine family)

👋 Introduction

Market Position:

The Suzuki GS750 was a pivotal model in Suzuki's move towards larger displacement, inline-four cylinder motorcycles, aiming to compete with established European and Japanese manufacturers in the burgeoning superbike segment of the mid-1970s.

Competitive Analysis:

Competed directly with models like the Kawasaki Z1, Honda CB750F/CB900F, and Yamaha XS750/XS1100. The GS750 offered a blend of performance, handling, and reliability, often praised for its smooth power delivery.

Key Features:

Inline-four DOHC engine, advanced (for its time) suspension, disc brake (often front), refined styling, reputation for dependability.

📋 Manual Details

Coverage Areas:

Complete Service and Repair

Page Count:

Approx. 250-300 pages (estimated for a comprehensive manual of this era)

Manual Type:

Factory Service Manual / Workshop Manual

Language:

English

Format:

Digital (likely PDF, potentially scanned original)

📖 Manual Coverage

Engine Systems:

Engine assembly, disassembly, tuning, lubrication, cooling, valve timing, ignition system, carburetor systems, fuel delivery, exhaust system.

Transmission Systems:

Gearbox inspection, maintenance, repair, clutch operation, shift mechanism.

Electrical Systems:

Wiring diagrams, lighting, charging system (alternator, regulator), ignition coils, starter motor, battery, instrumentation, horn.

Chassis Systems:

Frame inspection, front suspension (forks, steering head), rear suspension (shock absorbers, swingarm), wheel bearings, drive chain, spokes.

Braking Systems:

Front and rear brake mechanisms (likely drum brakes for this era, possibly early disc introduction on some models), hydraulic systems (if applicable), brake pad/shoe replacement, adjustment.

Bodywork And Trim:

Panel removal, fairings (if equipped), seat, fuel tank, fenders, controls.

Diagnostic Charts:

Troubleshooting flowcharts for electrical, ignition, and fuel system issues.

Maintenance Procedures:

Oil changes, filter replacements, chain adjustment, lubrication points, spark plug replacement, air filter cleaning/replacement, brake adjustment, tire pressure checks, battery maintenance.

Troubleshooting Guides:

Systematic diagnostic procedures for common problems, symptom-based troubleshooting charts.

Repair Procedures:

Detailed step-by-step instructions for component disassembly, repair, and reassembly.

Engine Rebuild:

Piston ring replacement, cylinder honing, bearing replacement, valve seat grinding, crankshaft inspection.

Carburetor Tuning:

Detailed procedures for synchronization, jetting changes, and float height adjustment.

Wheel And Tire Service:

Instructions for tire replacement, tube patching, wheel balancing, and spoke tensioning.

Frame And Suspension Alignment:

Guidelines for checking steering head bearing adjustment, front fork alignment, and swingarm pivot bearings.

Electrical Component Testing:

Diagnostic procedures for testing ignition coils, stator output, regulator, starter motor, and battery condition.

Bodywork Repair And Refinishing:

Guidance on minor bodywork repair, panel alignment, and potentially touch-up paint specifications.

Technical Depth:

Comprehensive, covering from basic routine maintenance to complete engine and chassis overhauls. Includes detailed torque specifications, clearances, and diagnostic data.

Torque Specifications:

Comprehensive list of all critical torque values for engine, chassis, and brake components.

Clearances And Tolerances:

Detailed specifications for valve clearances, piston-to-cylinder wall clearance, bearing clearances, and other critical tolerances.

📊 Manual Specifications

File Format Details:

Likely PDF. Searchable text capabilities dependent on the quality of the digitization. Optimized for digital viewing and printing.

File Accessibility:

Likely requires a PDF reader. Some digital manuals may be optimized for tablets or desktops.

Print Quality:

High-resolution scans of original factory manuals, preserving clarity of diagrams and text.

Binding Type:

N/A (Digital Format)

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Engine Type:

Air-cooled, four-stroke, DOHC, inline-four

Displacement:

748 cc (748 cm³)

Bore X Stroke:

65.0 mm x 56.4 mm (approximate, confirmation needed from specific manual version)

Compression Ratio:

8.8:1 or 9.0:1 (typical for the era, check manual)

Horsepower:

Approx. 70-75 HP @ 8500 RPM (estimated, confirm from manual)

Torque:

Approx. 60-65 Nm @ 7000 RPM (estimated, confirm from manual)

Performance Curve Data:

May include dyno charts or descriptions of power and torque delivery across the RPM range.

Carburetors:

Four Mikuni VM34SS or similar 34mm constant velocity carburetors

Fuel Type:

Unleaded gasoline (preferred), 91 octane or higher

Ignition Type:

CDI (Capacitor Discharge Ignition) with electronic advance

Lubrication Type:

Wet sump

Cooling Method:

Air cooling

Valve Actuation:

Dual Overhead Camshafts (DOHC), actuated by chain drive

🔧 Transmission

Transmission Type:

5-speed constant mesh

Final Drive:

Chain drive

Clutch Type:

Wet, multi-plate

📐 Dimensions

Length:

Approx. 2200 mm (confirm from manual)

Width:

Approx. 790 mm (confirm from manual)

Height:

Approx. 1200 mm (confirm from manual)

Dry Weight:

Approx. 230-240 kg (confirm from manual)

Fuel Capacity:

Approx. 19-20 Liters (confirm from manual)

🛡️ Safety Features

Safety Ratings:

No standardized crash ratings existed for motorcycles in 1976. Safety relied on mechanical design and rider skill.

Active Safety Features:

Disc front brake (on many models), effective drum rear brake, good chassis stability, responsive steering, adequate lighting system.

Passive Safety Features:

Frame integrity, durable construction.

💡 Technology Features

Infotainment Features:

None (1970s technology).

Driver Assistance Features:

None (1970s technology).

Connectivity Features:

None (1970s technology).

Instrumentation Features:

Analog speedometer, tachometer, fuel gauge, indicator lights (turn signals, oil pressure, high beam), odometer, trip meter.

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 km or 6-12 months (typical, confirm exact in manual)

Valve Check Interval:

Every 5,000-10,000 km (typical, confirm exact in manual)

Chain Lubrication And Adjustment:

Every 1,000 km or as needed, adjustment every 5,000 km (typical, confirm exact in manual)

Engine Oil Type:

API SE, SAE 10W-40 or 20W-50 motorcycle-specific oil (confirm in manual)

Engine Oil Capacity:

Approx. 3.5-4.0 Liters with filter change (confirm in manual)

Brake Fluid Type:

DOT 3 or DOT 4 (if disc brake equipped, confirm in manual)

Gearbox Oil Type:

GL-1 SAE 80W or 90W hypoid gear oil (typical, confirm in manual)

Common Issues:

Carburetor synchronization and cleaning, fuel line degradation, charging system issues (rectifier/regulator), wear on suspension components, clutch wear, potential for stator failure.

Preventative Maintenance Focus:

Regular carburetor cleaning, consistent chain lubrication, checking electrical connections, and ensuring the charging system is functioning correctly are crucial for longevity.

📚 Vehicle History

Brand Heritage:

Suzuki, founded in 1909, has a long history in manufacturing, initially textiles and later expanding into motorcycles in the 1950s. Known for innovation and sporty motorcycles.

Model Evolution Path:

The GS750 was the first in Suzuki's successful GS series, which evolved into larger displacements and more advanced configurations, setting the stage for future Suzuki sportbikes and nakeds.

Production Period:

1976-1981 (First generation GS750)

Manufacturing Location:

Japan

🏆 Awards & Recognition

Recognitions And Awards:

While specific awards are not commonly documented for individual motorcycle models of this era, the GS750 was critically acclaimed by motorcycle publications for its performance, handling, and reliability, contributing to Suzuki's reputation in the sportbike market.

Consumer Ratings:

Generally positive reviews from contemporary motorcycle magazines highlighting its smooth power, comfortable riding position, and good value.