Jawa 250

The Jawa 250 Type 353/04 Specifications

the specifications, performance chart, gear ratios, oil details, and rim/tyre sizes for the Jawa 250 Type 353/04:

CategoryDetails
ModelJawa 250 Type 353/04
Engine TypeTwo-stroke, air-cooled
Number of Cylinders1
Bore x Stroke68 mm x 68 mm
Engine Displacement248.5 cc
Compression Ratio7.5:1
Engine OutputAround 12-13 BHP (approx.)
Fuel SystemCarbureted
Carburetor TypeJikov
Fuel Tank CapacityApproximately 13 liters
Oil Type2-stroke motorcycle oil
Oil CapacityApprox. 1.0 – 1.2 liters
Transmission4-speed gearbox
Gear RatiosPrimary Drive: 17/39, 16/43, 17/39, 17/39
Overall Gear Ratios1st: 11.49, 2nd: 7.60, 3rd: 5.95, 4th: 4.83
Performance Chart0-60 km/h: approx. 9-10 seconds, Top Speed: 120 km/h (approx.)
Rim SizeFront: 2.75 x 18 inches, Rear: 3.00 x 18 inches
Tyre SizeFront: 3.00 x 18 inches, Rear: 3.25 x 18 inches

Please note that some values, especially gear ratios and performance figures, may vary slightly based on specific models and variations within the Jawa 250 Type 353/04 series.

Download Owners Manual here: DOWNLOAD

Electrical System:

  • Ignition Type: Coil ignition system
  • Voltage: Typically 6 volts (common in motorcycles of that era)
  • Generator/Charging System: Dynamo-based charging system
  • Lighting: Traditional incandescent bulbs for headlight, taillight, and indicators
  • Wiring: Basic wiring harness with minimal electronic components

Ignition:

  • Ignition System: Points-based contact breaker ignition
  • Spark Plug Type: Typically employs a single spark plug
  • Timing: Fixed ignition timing, usually set manually

Please note that specific electrical and ignition configurations might vary based on the bike’s maintenance, modifications, or regional specifications. These details represent common setups found in the Jawa 250 Type 353/04 during its manufacturing period.

Pros of Jawa 250 Type 353/04:

  1. Reliable Engine: Renowned for its durable two-stroke engine, offering dependable performance.
  2. Vintage Design: Embraces classic aesthetics, appealing to enthusiasts of retro motorcycles.
  3. Balanced Power: Provides a balanced blend of power and efficiency for daily riding.
  4. Maneuverability: Agile and easy to handle, making it suitable for urban and rural roads.
  5. Heritage Value: Carries the heritage of Jawa motorcycles, appealing to collectors and vintage bike enthusiasts.

Cons of Jawa 250 Type 353/04:

  1. Limited Modern Features: Lacks modern amenities found in contemporary motorcycles.
  2. Maintenance Intensive: Being a vintage model, it may require frequent maintenance.
  3. Availability of Parts: Some components might be challenging to find due to age and rarity.

Difference between 04 and 05 Models:

The primary difference between the Jawa 250 Type 353/04 and 353/05 models lies in the internal components, particularly in their engine specifications and minor design alterations. Often, these differences are nuanced, such as adjustments in carburetion, minor gear ratio tweaks, or subtle engine optimizations, resulting in slight variations in performance and handling. However, these variations might not drastically alter the overall riding experience, maintaining the classic Jawa essence across both models.

Download Workshop Manual here: DOWNLOAD

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