Yamaha XS650SF XS650-2F 1979 Workshop Repair Service Manual

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Art.-Nr: 75959

Stichworte: 1979 Marine Motorcycle Sterndrive XS650-2F XS650SF Yamaha

Produktvarianten

Beschreibung

This manual covers the Yamaha XS650SF and XS650-2F models from 1979. The XS650 line, known for its robust engineering and classic styling, represents a significant era in motorcycle heritage. These parallel-twin motorcycles, powered by a 745cc air-cooled engine, offer a direct and engaging riding experience, making them a popular choice for enthusiasts and collectors alike. Their mechanical simplicity and enduring design have cemented their place in motorcycle history. This comprehensive Workshop Repair Service Manual provides detailed instructions for the repair and overhaul of all major systems, including the engine, transmission, fuel, ignition, lubrication, exhaust, electrical, brakes, and suspension. It covers routine maintenance, component removal and installation, disassembly and assembly procedures, troubleshooting, and the use of special tools. This resource is designed to assist both experienced technicians and DIY enthusiasts in maintaining and repairing their Yamaha XS650SF XS650-2F, ensuring optimal performance and longevity.

🏷️ Basic Information

Identification

Make:

Yamaha

Model:

XS650SF

Model Variant:

XS650-2F

Year:

Codes

Model Code:

XS650SF / XS650-2F

👋 Introduction

Market Position

Positioning:

Essential resource for owners and technicians to maintain and repair the Yamaha XS650SF XS650-2F 1979.

Competitive Analysis

Value Proposition:

Provides dealership-level information and procedures to enable professional-quality repairs, saving time and money.

Key Features

Accuracy Assurance:

Endeavored to ensure accuracy, containing all necessary instructions for any repair.

Purpose:

To help owners get the best value from their vehicle by facilitating informed maintenance and repair.

📋 Manual Details

Coverage Areas

Primary Coverage:

Repair and overhaul of Yamaha XS650SF XS650-2F 1979 models

Additional Coverage:

Proprietary component repair instructions

Page Count

Total Pages:

Manual Type

Type:

Workshop Repair Service Manual

Language

Language:

English

Format

Delivery Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Complete repair, disassembly, and assembly

Transmission:

Complete repair, disassembly, and assembly

Fuel System:

Repair and adjustment procedures

Ignition System:

Repair and adjustment procedures

Lubrication System:

Maintenance and repair

Exhaust System:

Maintenance and repair

Electrical System:

Comprehensive repair and troubleshooting

Bodywork:

Repair and maintenance

Brakes:

Repair and maintenance procedures for front and rear braking systems.

Suspension:

Front fork and rear shock absorber overhaul and adjustment.

Wheels Tires:

Information on wheel removal, tire mounting, and spoke tensioning.

Frame Chassis:

Inspection and maintenance of the frame and related components.

Procedures Included

Maintenance:

Routine maintenance, tune-ups, lubrication

Removal Installation:

Component removal and installation procedures

Assembly Disassembly:

Detailed procedures for all major assemblies

Troubleshooting:

Diagnostic and repair procedures for common issues

Special Tools:

Identification and usage of specialized tools

Engine Rebuild:

Detailed step-by-step instructions for complete engine disassembly, inspection, and reassembly.

Carburetor Rebuild:

Instructions for disassembly, cleaning, and reassembly of Mikuni carburetors.

Electrical Diagnostics:

Troubleshooting charts and procedures for electrical system faults.

Tune Up:

Procedures for engine tuning, including ignition timing, carburetor synchronization, and idle speed adjustment.

Technical Depth

Depth:

Comprehensive, from routine maintenance to complete engine and transmission overhauls

Target Audience:

Technicians conversant with general automobile practices, DIY enthusiasts

📊 Manual Specifications

File Format

Format:

Searchability:

Likely text-searchable PDF, enhancing usability.

File Size:

Variable based on PDF compression, but typically manageable for email delivery.

Print Quality

Printability:

Yes, printable

Binding Type

Binding:

Digital (PDF Download)

Paper Type

Paper Type:

Not Applicable (Digital)

⚙️ Engine Specifications

Primary Engine

Configuration:

745cc, Air-cooled, Four-stroke, Parallel-twin

Bore X Stroke:

75.0 mm x 82.0 mm (Approximate, common XS650 spec)

Compression Ratio:

8.5:1 (Typical for XS650 models)

Performance

Horsepower:

Approx. 50 HP @ 6700 RPM (Varies by market/tuning)

Torque:

Approx. 42 ft-lbs @ 5000 RPM (Varies by market/tuning)

Fuel System

Carburetion:

Dual Mikuni VM Series Carburetors (e.g., VM34)

Fuel Type:

Unleaded Gasoline (91 Octane or higher recommended)

Lubrication System

Type:

Wet Sump

Oil Capacity:

Approx. 2.5 Liters (with filter change)

Oil Recommendation:

SAE 10W-40 or 10W-50 Motorcycle Engine Oil (API SE, SF or SG)

🔧 Transmission

Standard

Type:

5-Speed Constant Mesh

Drive Type:

Chain Drive

Features

Clutch Type:

Wet, Multi-disc

Transmission Oil Type:

Yamaha Motorcycle Gear Oil or equivalent API GL-4

Transmission Oil Capacity:

Approx. 1.0 Liter

💡 Technology Features

Infotainment

Features:

No integrated infotainment system; relies on analog instrumentation.

Driver Assistance

Features:

No driver-assistance features; purely mechanical operation.

Connectivity

Features:

No modern connectivity features.

🔧 Maintenance

Service Intervals

Oil Change:

Every 3,000 km or 6 months, whichever comes first

Valve Clearance Check:

Every 6,000 km or 12 months

Spark Plug Replacement:

Every 12,000 km or 12 months

Fluid Specifications

Engine Oil:

SAE 10W-40 or 10W-50 Motorcycle Engine Oil (API SE, SF or SG)

Transmission Oil:

Yamaha Motorcycle Gear Oil or equivalent API GL-4

Brake Fluid:

DOT 3 or DOT 4

Coolant:

Not Applicable (Air-Cooled)

Known Issues

Common Wear Points:

Cam chain tensioner, XS Performance exhaust leaks, electrical connections, front fork seals.

Carburetor Tuning:

Can be sensitive to tuning; requires precise synchronization and jetting for optimal performance.

Charging System:

Stator and regulator/rectifier can be prone to failure over time.

Safety Precautions

Torque Wrench Use:

Essential for ensuring fasteners are tightened to specification, particularly cylinder head and crankcase bolts.

Personal Protective Equipment:

Recommended when working with fuels, oils, and during general repair tasks.

📚 Vehicle History

Brand Heritage

Heritage:

Yamaha Motor Company, known for innovation and performance in motorcycles.

Model Evolution

Xs650 Lineage:

The XS650 series, introduced in the early 1970s, was a highly influential parallel-twin motorcycle that gained a strong following for its robust engineering and classic styling.

Production

Production Era:

1970s - early 1980s (XS650 line)