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Yamaha SR250 SR250G 1980-1983 Workshop Service Manual Repair

$16.99
$16.99
This manual covers the motorcycle, produced from 1980 to 1983. The SR250 is celebrated for its classic styling, reliable single-cylinder air-cooled engine, and pure motorcycling experience. Known for its simplicity...
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Type: Motorcycle
Vendor:
Yamaha
Sku: 56690
Tags: 1980 1981 1982 1983 Marine Motorcycle SR250 SR250G Sterndrive Yamaha
Yamaha SR250 SR250G 1980-1983 Workshop Service Manual RepairYamaha SR250 SR250G 1980-1983 Workshop Service Manual RepairYamaha SR250 SR250G 1980-1983 Workshop Service Manual RepairYamaha SR250 SR250G 1980-1983 Workshop Service Manual Repair
This manual covers the motorcycle, produced from 1980 to 1983. The SR250 is celebrated for its classic styling, reliable single-cylinder air-cooled engine, and pure motorcycling experience. Known for its simplicity and ease of maintenance, this model embodies a heritage of producing durable and enjoyable motorcycles. Its design emphasizes a minimalist aesthetic and a focus on rider engagement, making it a popular choice for both commuting and recreational riding. This comprehensive workshop service and repair manual provides detailed information for maintaining and repairing your SR250G. It covers essential areas including engine overhaul, transmission, electrical systems, chassis, brakes, and fuel systems. The manual includes step-by-step repair instructions, diagnostic guides for troubleshooting common issues, periodic maintenance schedules, and detailed technical specifications. With its thorough coverage, this manual is an indispensable resource for professional technicians and owners alike seeking to preserve the performance and longevity of their SR250G.
🏷️ Basic Information
Identification
Make:
Yamaha
Model:
SR250
Model Variant:
SR250G
Production Years Covered:
1980, 1981, 1982, 1983
Codes
Model Code Prefix:
SR250G
👋 Introduction
Market Position
Target Audience:
Professional technicians, DIY mechanics, Yamaha SR250 owners
Competitive Analysis
Value Proposition:
Provides comprehensive, manufacturer-approved repair and maintenance information, saving on labor costs.
Key Features
Accessibility:
Instant download, printable sections for workshop use.
Completeness:
Covers routine maintenance to complete engine overhauls, including wiring diagrams.
📋 Manual Details
Coverage Areas
Primary Coverage:
Workshop Service, Repair, Maintenance, Troubleshooting, Overhaul
Page Count
Estimated Pages:
Hundreds (specific count not provided, typical for comprehensive workshop manuals)
Manual Type
Type:
Workshop Service Manual / Repair Manual
Language
Language:
English
Format
Format:
PDF
📖 Manual Coverage
Systems Covered
Engine:
Detailed engine overhaul, tuning, carburetor, ignition system, lubrication system
Transmission:
Clutch operation, gearbox disassembly and assembly, shifting mechanism
Electrical System:
Wiring diagrams, lighting system, charging system, ignition system, starter system, battery maintenance
Chassis And Suspension:
Front fork (telescopic), rear suspension (swingarm, shock absorbers), steering system, frame inspection
Brakes:
Front disc brake, rear drum brake, hydraulic system, brake pad/shoe replacement
Fuel System:
Fuel tank, fuel petcock, fuel lines, carburetor (likely Mikuni VM series)
Exhaust System:
Muffler, exhaust pipe, gasket replacement
Procedures Included
Maintenance:
Periodic maintenance charts, oil changes, filter replacements, chain adjustment, spark plug checks
Repair:
Step-by-step repair instructions for all major components
Troubleshooting:
Diagnostic guides for common problems, symptoms, and solutions
Overhaul:
Complete engine and component overhaul procedures
Adjustments:
Carburetor tuning, valve clearance adjustment, brake adjustments
Wiring Diagrams:
Detailed electrical schematics included
Technical Depth
Depth:
Comprehensive, suitable for professional technicians and advanced DIY enthusiasts
📊 Manual Specifications
File Format
Format:
PDF
Print Quality
Printability:
Full Printable
Zoom Functionality:
Zoom IN/OUT capable
Binding Type
Binding:
Digital (PDF Download)
Paper Type
Paper Type:
Not Applicable (Digital)
Delivery
Delivery Method:
Instant Download
Requirements
Software Requirements:
Adobe PDF Reader, WinRAR
Operating System Compatibility:
All Versions of Windows & Mac
⚙️ Engine Specifications
Primary Engine
Engine Type:
Four-stroke, Single-cylinder, Air-cooled
Displacement:
249 cc (approximately)
Bore X Stroke:
Typically around 71.0 mm x 62.0 mm (specific values to be confirmed in manual)
Compression Ratio:
Typically around 9.5:1 (specific values to be confirmed in manual)
Performance
Horsepower:
Approx. 18-20 HP (specific values to be confirmed in manual)
Torque:
Approx. 18-20 Nm (specific values to be confirmed in manual)
Fuel System
Carburetor Type:
Likely Mikuni VM34SS or similar single carburetor
Fuel Type:
Unleaded gasoline
Lubrication System
Oil Type:
SAE 10W-40 or 20W-40 motorcycle specific oil (refer to manual for exact specifications)
Oil Capacity:
Approx. 1.8 - 2.0 Liters (refer to manual for exact specifications)
Ignition System
Ignition Type:
CDI (Capacitor Discharge Ignition)
Engine Components
Valvetrain:
SOHC (Single Overhead Camshaft), 2 valves per cylinder
Cooling Method:
Air-cooled
🔧 Transmission
Standard
Transmission Type:
5-speed constant mesh
Clutch Type:
Wet, multi-plate
Features
Gear Ratios:
Specific gear ratios detailed in the manual
Fluid Requirements
Transmission Oil Type:
Yamalube or equivalent motorcycle transmission oil (refer to manual for exact specifications)
Transmission Oil Capacity:
Refer to manual for exact specification
📐 Dimensions
Exterior
Length:
Refer to manual for exact specification
Width:
Refer to manual for exact specification
Height:
Refer to manual for exact specification
Weights
Dry Weight:
Approx. 147 kg (refer to manual for exact specification)
Wet Weight:
Refer to manual for exact specification
Wheels And Tires
Front Tire Size:
Typically 3.00-18 4PR or similar
Rear Tire Size:
Typically 110/90-18 M/C 61S or similar
Front Wheel:
Spoked wheel
Rear Wheel:
Spoked wheel
🛡️ Safety Features
Ratings
Crash Test Ratings:
Not applicable to vintage motorcycles in the modern sense.
Active Features
Braking System:
Front disc brake, Rear drum brake
Passive Features
Lighting:
Headlight, Taillight, Turn Signals
💡 Technology Features
Infotainment
Infotainment System:
Basic analog instrumentation (speedometer, tachometer, odometer, indicator lights).
Driver Assistance
Driver Assistance Features:
None.
Connectivity
Connectivity Options:
None.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Typically every 3,000 km or 6 months (refer to manual for precise interval)
Spark Plug Replacement:
Refer to manual for recommended interval
Valve Clearance Check:
Typically every 6,000 km or 12 months (refer to manual for precise interval)
Fluid Specifications
Brake Fluid Type:
DOT 3 or DOT 4 (refer to manual for exact specification)
Fork Oil Type:
Specific viscosity fork oil, e.g., SAE 10W (refer to manual for exact specification)
Known Issues
Carburetor Performance:
Can be prone to clogging if fuel is left stagnant; requires regular cleaning and adjustment. Ignition coil performance degradation over time.
Electrical Connections:
Corrosion in connectors can lead to intermittent electrical faults.
Engine Compression:
Wear in piston rings and cylinder bore can lead to reduced compression over high mileage.
Exhaust Flange Leaks:
Exhaust header flange gaskets can wear out, leading to exhaust leaks.
📚 Vehicle History
Brand Heritage
Yamaha Motorcycle Division:
Yamaha Motor Company is renowned for its innovation and performance in motorcycle manufacturing, dating back to the early 1950s.
Model Evolution
Sr Series:
The SR series is known for its classic styling and reliable single-cylinder engines, embodying a minimalist and pure motorcycle experience.
Production
Production Period:
The SR250 model line was produced for many years, with the SR250G specifically covering the early 1980s.
🏆 Awards & Recognition
Recognitions
Model Reputation:
The SR250 is recognized for its reliability, simplicity, and classic motorcycle appeal. Often praised for its ease of maintenance and classic styling.
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