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  1. Bamos3

    Kawasaki 250 F11B - dads old bike

    The jets in your model, F11-B , should be: Needle jet 0-6 Pilot Jet #30A Main Jet #115 The earlier bike had: Needle Jet 0-8 Pilot Jet #40 Main Jet #112.5 Don't know why they changed them, nothing else in the engine or exhaust was altered. The Keyster kits are not made up of genuine...
  2. Bamos3

    Kawasaki 250 F11B - dads old bike

    The head gasket too use is the thicker one. kawasaki put out a service bulletin for the F11, to use the thicker gasket due to customers reporting problems with pinging. Your bike was produced after the bulletin came out and has it fitted as stock. Another thing to watch out for is the carby...
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