Sunday, 28 October 2012


Replacing the carburetter

Always replace the carburetter fully assembled with the float chamber and mixing chamber top attached. The manifold flange and any heat reducing spacers should be carefully checked and dressed if necessary to ensure they are flat. Bolting the carburetter to a distorted flange or uneven spacer increases the risk of carburetter body or flange distortion.

Mark 1 carburetters are not designed to bolt tightly to the intake flange and may distort if overtightened. It is only necessary to compress the O ring seal to ensure air tightness. When correctly tightened the carburetter flange and engine manifold should be just touching. Nyloc nuts should always be used to mount Amal Mark 1 carburetters and should be tightened to no more than 4 ft lb.

Ensure that throttle and choke cables are able to open and shut freely when the petrol tank is replaced on the bike, and are not affected by moving the handlebars from side to side.


The carburetter is one of the more reliable but most accessible systems on a motorcycle. When considering a suspected carburetter fault bear in mind that air leaks or obstructions in the induction or exhaust systems, incorrect valve clearances, incorrect ignition timing,  worn valve guides or piston rings can all affect the performance of the carburetter, while ignition faults such as worn advance/retard units can produce symptoms that resemble a carburetter fault.   

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  1. Seriously kakak not familiar all sort of these things. Having cars also just know how to fill fuel and driving. Others rely on abang to do..

    As for bikes totally zero - nothing that kakak knows. Sitting behind the biker like you may be can haha....

  2. @kakzakie
    @kesuma angsana

    Terima kasih sudi singgah sis dan support blog baru tirana aduka ini.
    Love you all sis.

    Happy blogging together.

  3. nice sharing ^^

    sy x mahir keje cmni, huh...

  4. @caliph
    Tak pe bro caliph.kat sini ada segalanya panduan mgenai motor2 lama

    Thanks so much bro caliph sudi singgah.

  5. haha . pyka tao tgk je tapi tak tahu sangat . haha . apa pon pyka dtg singgah blog nie .