Jawa 250 350 353 354 Service Repair Manual

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This manual covers the Jawa 250 and 350 Series motorcycles, including models such as the Jawa 250 Type 353, Jawa 250 Type 354, Jawa 350 Type 353, and Jawa 350...

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Taper: Motorcycle

Distributeur:

UGS: 136752

Mots clés: 250 350 353 354 Jawa Motorcycle Motorcycles

Variantes de produits

Description

This manual covers the Jawa 250 and 350 Series motorcycles, including models such as the Jawa 250 Type 353, Jawa 250 Type 354, Jawa 350 Type 353, and Jawa 350 Type 354, which were produced from the 1950s through the 1970s. These robust and historically significant motorcycles, originating from Czechoslovakia, are known for their simplicity and reliability. The 250cc models typically feature a single-cylinder two-stroke engine, while the 350cc variants are powered by a two-cylinder, air-cooled, two-stroke engine. Their engineering quality and enduring popularity have made them cherished by classic motorcycle enthusiasts worldwide. This workshop service and repair manual provides comprehensive guidance for the maintenance and repair of your Jawa motorcycle. It details procedures for all major systems, including the engine, fuel system, gearbox, clutch, brakes, suspension, and electrical components. The manual includes factory repair procedures, recommended maintenance schedules, and systematic troubleshooting guides for common issues. With abundant illustrations and exploded diagrams, this resource is essential for owners and technicians aiming to preserve the performance and longevity of their Jawa 250/350 Series motorcycles.

🏷️ Basic Information

Identification

Make:

Model:

250/350 Series

Covered Models:

Jawa 250 Type 353, Jawa 250 Type 354, Jawa 350 Type 353, Jawa 350 Type 354

Likely Production Years:

1950s - 1970s (specific years may vary by exact model designation)

Codes

Chassis Code Examples:

353, 354 (often appended with model specifics like 'Californian' or engine size)

👋 Introduction

Market Position

Target Audience:

Jawa motorcycle owners, classic motorcycle enthusiasts, mechanics specializing in vintage European motorcycles.

Competitive Analysis

Value Proposition:

Provides essential, detailed information for DIY maintenance and repair, enabling cost savings and extending the lifespan of classic Jawa motorcycles.

Key Features

Comprehensiveness:

Extremely detailed coverage of mechanical and electrical systems, troubleshooting, and maintenance schedules.

Visual Aids:

Extensive use of diagrams and exploded views aids in complex procedures.

📋 Manual Details

Coverage Areas

Systems Covered Summary:

Engine, Fuel System, Gearbox, Transmission, Clutch, Exhaust System, Suspension, Brakes, Electrics, Bodywork, Cooling System (where applicable), Driveshaft (if applicable to specific 350 models)

Page Count

Estimated Page Count:

Likely 200-400 pages (typical for comprehensive service manuals of this era, though not explicitly stated in product info)

Manual Type

Manual Type:

Workshop Service and Repair Manual

Language

Language:

Likely English (common for internationally distributed manuals, though original might be Czech/Slovak; product info implies accessibility for a broad audience)

Format

Digital Format:

PDF (implied by 'easy to download')

📖 Manual Coverage

Systems Covered

Engine Service:

Complete engine overhaul, disassembly, assembly, internal component inspection, cylinder head service, piston and ring replacement, crankshaft and connecting rod service.

Fuel System Service:

Carburetor adjustment, cleaning, and rebuilding; fuel tank inspection and cleaning; fuel line routing and maintenance.

Gearbox Transmission Service:

Gearbox removal and installation, internal gear inspection, shift mechanism adjustment, lubrication specifications.

Clutch Service:

Clutch removal, installation, adjustment, and inspection of friction plates and pressure components.

Exhaust System Service:

Exhaust pipe and muffler inspection, sealing, and replacement.

Suspension Service:

Front fork (telescopic) service, oil replacement, seal inspection, and adjustment; rear shock absorber inspection and replacement.

Brake Servicing Procedures:

Drum brake inspection, adjustment, and relining; brake lever and cable maintenance.

Electrical System Service:

Wiring diagrams for ignition, lighting, and charging systems; coil and spark plug service; battery maintenance.

Bodywork Service:

Panel removal and installation, fender maintenance, seat and tank mounting.

Cooling System Service:

Air-cooled engine considerations, fin cleaning and inspection.

Driveshaft Service:

Maintenance of chain drive systems (sprocket wear, chain tension and lubrication).

Procedures Included

Fault Finding Diagnostics:

Systematic troubleshooting guides for common performance issues, starting problems, and electrical faults.

Factory Repair Procedures:

Official methods and sequences for various repair and maintenance tasks as specified by the manufacturer.

Factory Maintenance Schedules:

Recommended service intervals for routine maintenance tasks like oil changes, lubrication, and inspections.

Timing Chain Service:

Inspection and adjustment procedures for the engine timing chain (if applicable to specific engine designs).

Technical Depth

Diagnostic Capability:

Covers basic troubleshooting to detailed component-level diagnostics.

Rebuild Scope:

Provides guidance for complete engine and gearbox rebuilds.

Visual Guidance:

Features 'highly detailed exploded pictures and diagrams' and 'abundant illustrations' for clear understanding.

📊 Manual Specifications

File Format

Document Quality:

High-quality scans or digital reproductions enabling clear viewing of diagrams and text.

Searchability:

Likely searchable PDF content for quick information retrieval.

Print Quality

Printability:

All pages are printable, allowing for workshop use.

Binding Type

Binding Type:

N/A (Digital Format)

Paper Type

Paper Type:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Two-stroke, air-cooled, twin-cylinder (for 350 models); single-cylinder (for 250 models).

Displacement 250Cc:

Approximately 248.4 cc (bore x stroke typically around 65mm x 75mm)

Displacement 350Cc:

Approximately 343.5 cc (bore x stroke typically around 58mm x 65mm for early models, later ~60mm x 62mm)

Performance

Horsepower 250Cc Approx:

14-18 HP (depending on specific model and tuning)

Horsepower 350Cc Approx:

22-26 HP (depending on specific model and tuning)

Fuel System

Fuel Delivery:

Carburetor (e.g., Jikov or Amal style, single or twin depending on model)

Fuel Type Recommendation:

Leaded gasoline with 2-stroke oil pre-mix (specific ratio documented in manual, typically 1:25 or 1:50)

Engine Firing Order

Engine Firing Order:

For twin-cylinder 350 models, typically 180 degrees out of phase for smoother operation; single-cylinder 250 models have a single firing event per revolution.

🔧 Transmission

Standard

Transmission Type:

4-speed constant mesh manual gearbox

Features

Clutch Type:

Wet multi-plate clutch

Gearbox Lubricant:

Specific gearbox oil grade (e.g., SAE 80 or 90 gear oil, or motorcycle-specific 2T oil/gear oil mix depending on design heritage; manual will specify)

📐 Dimensions

Exterior

Wheelbase Approx:

1350-1400 mm (varies by model)

Weights

Dry Weight Approx 250Cc:

130-140 kg

Dry Weight Approx 350Cc:

140-155 kg

💡 Technology Features

Infotainment

Infotainment System:

N/A (Basic instrumentation: speedometer, neutral indicator, high beam indicator)

Driver Assistance

Driver Assistance Features:

Connectivity

Connectivity Options:

🔧 Maintenance

Service Intervals

Oil Change Frequency:

Dependent on engine oil mixture for two-stroke lubrication; gearbox oil changes at intervals typically specified by mileage or time (e.g., 2,000-5,000 km).

Spark Plug Service:

Regular checks and cleaning/replacement as per manual recommendations, dependent on usage.

Fluid Specifications

Two Stroke Oil Mix:

Crucial to follow manual's recommended ratio and oil type (e.g., mineral or semi-synthetic 2T oil).

Fork Oil Type:

Specific viscosity fork oil (e.g., SAE 10 or 15), capacity per leg to be detailed in manual.

Known Issues

Common Wear Items:

Clutch plates, piston rings, fork seals, carburetor jets, electrical contacts, and chain/sprockets.

Maintenance Challenges:

Carburetor tuning, proper ignition timing, and maintaining the two-stroke lubrication system are critical for reliable operation.

📚 Vehicle History

Brand Heritage

Origin:

Jawa is a Czech motorcycle manufacturer founded in 1929.

Model Evolution

Series Significance:

The 353 and 354 series were popular post-war models that represented Jawa's strong presence in the lightweight and middleweight motorcycle market, known for their robustness and simplicity.

Production

Manufacturing Location:

Czechoslovakia (now Czech Republic and Slovakia)

🏆 Awards & Recognition

Recognitions

Historical Market Impact:

Jawa motorcycles were highly regarded for their reliability and affordability in many international markets, including parts of Europe, Asia, and South America.