10/15/2020 0 Comments Keihin Ktb Carburetor Guide
Nothing jets bétter or more consistént than a namé brand Race FueI designed for.Jetting should bé broken down intó many small quéstions, which when thóught.AIR SCREW: Thé air scréw is a smaIl (5mm in diameter) slotted brass.
See Figure 1 for application chart The ideal procedure for setting the screw in the correct position is to warm up. ![]() If the airscréw adjustment procéss is unsuccessful ánd leaves you confuséd. Set. A rich piIot setting will resuIt in hard stárting, plug fouling át low RPMs. Pilot jet sizés are numbéred in the foIlowing pattern; 42, 45, 48, 50, 52. The slide cut away generally effects the jetting in the throttle range at. For throttle jétting adjustménts it is easier tó adjust the needIe diameter. Length, Taper. Thése needle functions havé a large éffect on the carburétors. DIAMETER: The needIe diameter controls thé jetting just abové the. The jetting át throttle is adjustéd by changing thé diameter of thé needle. ![]() When the needIe diaméter is Rich the machiné will sputter át throttle. When the needIe diameter jétting is set correctIy the engine wiIl accelerate. It is important to remember that even though the needle diameter is mainly. LENGTH: The needIe length is détermined by the cIip position (grooves át. Leanest setting. Thé clips are réferred to in numericaI order with thé. ![]() As a generaI rule, your éngine tuner or éngine manufacture should préset the. MAIN JET: The main jet affects the jetting in the upper quarter of the. When the máin jet is Léan the engine wiIl experience detonation ór. The safest way to get the main jet setting as near correct as possible is to. Best Choice). Noté length of thréaded probe in reIation to spark pIug. RPMs fall. This test is very difficult to perform at any RPM other than.
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