🏷️ Basic Information

Make:

Yamaha

Model:

XS750

Model Variant:

XS 750 Series

Years Covered:

1976, 1977, 1978, 1979, 1980, 1981

Chassis Codes:

Likely includes 2J4, 4E0 variants

Engine Codes:

Likely 1T3 for initial models, variations for later years

👋 Introduction

Positioning:

Essential technical resource for owners and independent repair shops of Yamaha XS750 motorcycles from 1976-1981.

Target Audience:

Yamaha XS750 owners, DIY enthusiasts, independent motorcycle repair shops.

Comparison:

This manual is presented as the definitive, factory-equivalent resource, directly comparable to manuals used by authorized Yamaha service centers, offering comprehensive coverage often exceeding aftermarket alternatives.

Features:

Complete and intact PDF, factory-written information, detailed diagrams and photos, step-by-step procedures, troubleshooting guides, electrical system diagrams, instant digital access.

📋 Manual Details

Coverage:

All Models/Engines/Trim/Transmissions Types

Completeness:

Complete and intact, guaranteed to be functional without missing or corrupt parts/pages.

Page Count:

Hundreds of pages (actual count not specified, but implied to be extensive)

Type:

Workshop Repair Service Manual

Language:

English

Format:

PDF Download

Searchability:

Likely text-searchable PDF, enabling quick location of specific information.

📖 Manual Coverage

Systems:

General Information, Fuel System, Cooling System, Engine Top End, Clutch, Engine Lubrication System, Crankshaft/Transmission, Wheels/Tires, Final Drive, Brakes, Suspension, Steering, Frame, Electrical System, Appendix

Electrical System Details:

Battery, charging system (alternator, regulator/rectifier), ignition system (CDI unit, coils, wiring), starting system (starter motor, solenoid), lighting system (headlight, tail light, brake light, turn signals), instrumentation illumination, horn.

Fuel System Details:

Fuel tank, fuel lines, fuel pump (if applicable), carburetor assembly, disassembly, cleaning, adjustment, and synchronization. Jetting specifications and float height settings.

Cooling System Details:

While air-cooled, this section likely covers any ancillary cooling fins, shrouds, or related components that aid in heat dissipation.

Clutch Details:

Clutch lever, cable adjustment, clutch assembly (plates, springs, pressure plate), clutch release mechanism.

Crankshaft Transmission Details:

Crankshaft inspection, rod bearings, transmission gears, shafts, shift drum, shift forks, neutral switch, drive sprocket.

Wheel Tire Final Drive Details:

Wheel spoke tensioning, hub maintenance, bearing replacement, tire mounting and balancing, final drive shaft lubrication and inspection, universal joint service.

Brake Details:

Brake fluid replacement, caliper service, piston seal replacement, brake pad inspection and replacement, master cylinder overhaul, brake line inspection.

Suspension Details:

Front fork oil, springs, damping mechanisms. Rear shock absorber, linkage (if applicable), spring preload adjustment.

Steering Details:

Handlebar, steering stem, steering head bearings inspection, lubrication, and adjustment.

Frame Details:

Frame structure inspection for damage, mounts, welding integrity.

Procedures:

Service, Maintenance, Troubleshooting, Repair, Disassembly, Assembly, Cleaning, Reinstalling, Diagnostic procedures, Electrical service procedures

Engine Rebuild:

Complete engine overhaul procedures, including cylinder head removal/installation, piston and ring replacement, crankshaft and connecting rod service, bearing inspection and replacement, timing chain and component service.

Suspension Service:

Front fork disassembly, seal replacement, oil level and viscosity specifications. Rear shock absorber inspection and replacement.

Frame And Bodywork:

Frame inspection, steering head bearing service, body panel removal and installation, seat, tank, and fender procedures.

Electrical Troubleshooting:

Combined troubleshooting and electrical service procedures with detailed wiring diagrams for simplified diagnosis of electrical faults.

Depth:

Professional Technician Level, Comprehensive Diagnostic and Repair Information, Detailed Step-by-Step Procedures

Troubleshooting Depth:

Comprehensive troubleshooting guides for common and uncommon issues, including symptoms, probable causes, and step-by-step diagnostic procedures. Dedicated sections for electrical system diagnostics with detailed wiring diagrams.

Critical Information:

Includes specific notes, cautions, and warnings throughout each chapter to highlight critical information for safe and effective repairs.

📊 Manual Specifications

Format:

PDF

Quality:

Full Printable, Zoom IN/OUT

Illustrations:

Hundreds of diagrams, drawings, and photos aiding in repair procedures. Includes enlarged inset views for detailed part examination.

Binding:

Digital Download (N/A for physical binding)

Paper:

Digital (N/A for physical paper type)

Delivery:

Instant Download

Requirements:

Adobe PDF Reader, WinZip

Compatibility:

All Versions of Windows & Mac

⚙️ Engine Specifications

Type:

Three-cylinder, four-stroke, air-cooled

Displacement:

747cc (45.6 cubic inches)

Bore X Stroke:

68.0 mm x 68.2 mm (Approximate, may vary slightly by year)

Engine Layout:

Inline-triple

Valve Train:

SOHC (Single Overhead Camshaft) with 2 valves per cylinder (total 6 valves).

Horsepower:

Approximately 63-67 hp at 7000 rpm (depending on year and specific model variant)

Torque:

Approximately 6.5 kgf-m (64 Nm; 47 lb-ft) at 5500 rpm (depending on year and specific model variant)

Carburetion:

Typically three Mikuni VM34 carburetors (specific model variants may differ)

Fuel Type:

Unleaded gasoline (Octane rating to be confirmed in manual)

Ignition Type:

CDI (Capacitor Discharge Ignition), often with dual spark plugs per cylinder for improved combustion.

🔧 Transmission

Type:

5-speed constant mesh, foot-shifted

Clutch Type:

Wet, multi-plate

Drive Type:

Shaft drive (final drive)

📐 Dimensions

Wheelbase:

Approximately 1480 mm (58.3 inches) - subject to variation by specific model (e.g., Standard, Special)

Dry Weight:

Approximately 220-230 kg (485-507 lbs) - subject to variation by specific model

🛡️ Safety Features

Braking System:

Front: Dual disc brakes. Rear: Single disc brake (typical for most models, variations may exist). Manual will detail specific caliper types and piston counts.

Lighting:

Headlight, tail light, brake lights, turn signals. Manual will cover bulb types and wiring.

💡 Technology Features

Features:

Analog gauges (speedometer, tachometer), basic lighting controls. Technology is period-appropriate for the late 1970s/early 1980s.

Features:

None. Focus is on mechanical operation and rider control.

Features:

None. This is a purely mechanical and electrical system.

🔧 Maintenance

Oil Change:

Recommended every 3,000-5,000 km (1,800-3,000 miles) or 6 months. Manual will specify exact intervals.

Valve Adjustment:

Typically required every 6,000-10,000 km (3,700-6,000 miles). Manual will detail the procedure and specific clearances.

Engine Oil:

API SE, SF, SG classification, SAE 10W-40 or 20W-50 recommended. Capacity around 2.4 liters without filter change. Manual will provide precise specifications.

Final Drive Oil:

Hypoid gear oil, SAE 80W-90 API GL-4. Capacity around 120 ml. Manual will provide precise specifications.

Brake Fluid:

DOT 3 or DOT 4 brake fluid (specified in manual for hydraulic systems).

Common Problems:

Cam chain tensioner wear, charging system issues (rectifier/stator), carburetor synchronization, potential for valve seat recession in some earlier models. Manual will offer diagnostic and repair solutions.

Front Tire Size:

Typically 3.00H-18 or 3.25H-18 (tube-type).

Rear Tire Size:

Typically 4.00H-18 or 4.25H-18 (tube-type).

Spark Plug Type:

NGK B8ES or equivalent (may vary). Manual will specify recommended plugs and gap.

📚 Vehicle History

Heritage:

Yamaha Motor Corporation, founded in 1955, has a rich history in motorcycle manufacturing, known for innovation, performance, and reliability across various genres.

Evolution:

The XS750 was Yamaha's entry into the multi-cylinder sport-touring segment, competing with Japanese and European rivals. It featured a sophisticated inline-triple engine, shaft drive, and offered a balance of performance and touring comfort.

Production Period:

Produced from 1976 to 1981, with variations like the XS750-2D, XS750-E, XS750-F, and XS750-G indicating model year updates and refinements.