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Carburetor adjustment Jawa 05,20,21,23 .


Forum Tech corner Carburetor adjustment Jawa 05,20,21,23 .




 maxipes  
František
2016-08-10 15:36:27

Before we carburetor thoroughly cleaned up, unscrew the screws and nozzles, ducts and vents stretch either strength or fiber bundle of twisted copper wires (obverse), the weaker and softer the better. Stretch and idle channel - is visible only when a careful search (sometimes even two, one below the top edge of the slide, the other about 5 mm closer to the engine) and blown with compressed air to disassemble clean the fuel cock !! Carburetor fold, needle hooked into a notch above 3, screw additional air permit for 1 turn. Warm up to operating temperature and then test the acceleration during the various openings of the slide (to about 1/2 open). I recommend the third gear to the gentle rise and the gas should be added to about 2.1. It is monitored whether, at any position, the engine does not turn off or continues to drag, so we raise the needle, if not, run the needle and repeat the experiment until we drop acceleration. Thus we set the second mode, then loosen the screw in the idle mixture vlolnoběhu 1/4 of a turn and try pulling away very slowly the throttle when the bike starts smoothly without a drop in acceleration loosen the screw by another 1/4 turn (while controlling volnoběřné speed screw stop Latches)

testing continue until the fall, he will appear in the transition from first to second and remove it either by lifting the needle (increasing the acceleration and consumption under partial load) or by returning the screw back 1/4 (second mode remains economical, slightly increases consumption at idle and under low gas). (Loosening the screw, air is added - for volnlběh mixture is cooled). The set mixture at full load is needed to have at hand the main nozzles of different sizes (it is a number that is on the nozzle stamped and indicates the diameter of the orifice in hundredths of mm), the correct size will be between 90 to 100, it is tested either Top speed or not, whether the engine in the last quarter Lifting the slider is not "dull and continues to gravitate. If the engine at full throttle stops to pull, or omits immediately stop - cause seizure - burnout or melting of the piston due to very lean. of course there is perfect and the ignition timing is set at the top tolerance, so that the speed limit has not occurred due to bad burn mix. Especially for SARS carburetor becomes the seat of the needle is a needle bumps breaking, so the recommended suspension of the needle is too rich mixture.

 maxipes  
František
2016-08-10 22:01:06

maxipes:

 maxipes  
František
2016-08-10 22:01:21

maxipes: maxipes:


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