Target Audience:
Owners of Jawa 250, 350, 353, and 354 motorcycles from 1970-1975 seeking to perform their own maintenance and repairs, as well as enthusiasts and independent workshops.
Diy Focus:
Emphasizes empowering owners to perform their own servicing and repairs, fostering a sense of self-sufficiency and cost-effectiveness.
Value Proposition:
Offers significant cost savings by enabling users to perform repairs typically handled by more expensive mechanics. Provides instant access and unlimited use, unlike time-limited subscriptions or expensive physical manuals.
Features:
Comprehensive A-Z coverage, detailed pictures & diagrams, printable pages, instant download delivery, lifetime usability, specific to models and years.
Primary Coverage:
All models (Jawa 250, 350, 353, 354) and all engine types within the specified production years.
Repair Scope:
Mechanical and Electrical repairs, A-Z.
Estimated Page Count:
Comprehensive, likely several hundred pages based on typical workshop manuals of the era covering multiple models.
Type:
Workshop Service Repair Manual
Language:
English (Implied by sales description and typical international manual availability)
Compatibility:
Compatible with any PC/MAC computer using Microsoft Windows (XP, NT, 2000, Vista, 7, etc.) and likely other operating systems that can open PDF files.
Engine Mechanical:
Engine removal/installation, cylinder head/valve train, engine block, lubrication, intake manifold, exhaust system, cooling, fuel system, emissions control, ignition system, valve timing procedures, chain/gear replacement, tensioner adjustments, tightening torques, timing marks, tensioner release/reset methods, chain routing, sprocket/gear timing marks.
Transmission Drivetrain:
Clutch, manual transmission, differential, driveshaft.
Chassis Suspension Brakes:
Steering, suspension, brakes (including ABS if applicable to the later end of the production range, though less common on these models).
Electrical Systems:
General electrical systems, wiring diagrams, Supplemental Restraint System (SRS) if applicable to later models within the range.
Body HVAC:
Body, heater and air conditioning, automatic climate control (if equipped).
Fuel Emissions:
Covers fuel tank maintenance, fuel lines, fuel filter (if equipped), and emission control devices specific to the era and region.
Cooling Heating:
Details on cooling fins, airflow management, and any associated components for the air-cooled engine.
Wiring Diagrams:
Comprehensive wiring diagrams illustrating the routing and function of electrical circuits for lighting, ignition, and charging systems.
Routine Maintenance:
Routine maintenance, tune-up procedures, fluid specifications, service intervals.
Repair Diagnostics:
All repair procedures (A-Z), troubleshooting, general removal & installation instructions, safety precautions, special tools.
Rebuild Instructions:
Detailed instructions for engine rebuilds, including piston, crankshaft, and gearbox overhauls.
Depth:
Comprehensive, covering detailed repair procedures, specifications, and diagrams suitable for both home mechanics and professional technicians.
Diagnostic Procedures:
Covers systematic troubleshooting for common mechanical and electrical faults, guiding users through symptom analysis and component testing.
Engine Type:
Two-stroke, air-cooled (typical for Jawa models of this era).
Displacement Variants:
250cc and 350cc (as indicated by model numbers).
Bore Stroke Data:
Specific bore and stroke dimensions for each engine variant (250cc, 350cc) would be detailed in the manual for machining purposes.
Horsepower Torque Data:
Specific data would be detailed within the manual, varying by exact model and year. Early 250s typically produced around 15-17 hp, while 350s around 20-24 hp.
Carburetion:
Typically single or twin carburetor setups (e.g., Jikov or Amal) with specific tuning procedures outlined.
Fuel Type Octane:
Recommended fuel type (e.g., leaded gasoline) and octane rating, along with proper fuel/oil mixture ratios.
Transmission Type:
Manual transmission, likely 4-speed or 5-speed, with detailed shift drum, gear, and clutch assembly information.
Optional Transmission:
N/A (Automatic transmissions were not common on these models).
Clutch Type:
Wet multi-plate clutch, with adjustment and replacement procedures detailed.
Wheelbase Length Width Height:
Specific dimensions for each model (250, 350, 353, 354) would be provided in the manual. Generally compact motorcycle dimensions.
Dry Weight Kerb Weight:
Specific weight figures for each model variation would be included in the manual's specifications section.
Crash Test Data:
N/A (Motorcycle safety ratings in the modern sense were not prevalent for this era).
Braking System:
Drum brakes front and rear. Manual covers inspection, adjustment, and relining procedures.
Lighting Signals:
Details on headlight, taillight, turn signals, and wiring for these components.
Routine Maintenance Schedule:
Detailed schedule for tasks such as spark plug checks/replacement, air filter cleaning/replacement, chain lubrication/adjustment, brake adjustments, oil changes (for gearbox), and general lubrication points.
Engine Oil Type:
Specific 2-stroke oil mix ratios and types for the fuel/oil mixture, as well as gearbox oil specifications (e.g., SAE 80 or 90 gear oil).
Gearbox Oil Capacity:
Specific oil capacities for the transmission will be listed.
Coolant Type:
N/A (Air-cooled engines).
Common Wear Points:
The manual would likely address common wear items like piston rings, clutch plates, wheel bearings, and carburetor jetting issues typical for these models.
Tune Up Steps:
Detailed steps for ignition timing adjustment (breaker points), carburetor synchronization and adjustment, and engine idle speed settings.
Manufacturer Origin:
Jawa motorcycles are historically from Czechoslovakia, known for their robust and reliable two-stroke engines.
Model Significance:
The 353 and 354 designations often refer to specific chassis and engine configurations within the Jawa 250 and 350 lines, representing popular models of their time known for accessible performance and relatively simple mechanics.
Manufacturing Period:
Models from the early to mid-1970s were a continuation and refinement of established Jawa designs.
