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How do you set a Keihin carburetor?
Start turning air screw counter clock wise, ¼ turn at a time until you have reached 2 ¾ turns out. Between 1 ¼ and 2 ¼ turns, your engine should have reached its highest RPM maintaining a steady throttle. Adjust air screw again between 1 ¼ and 2 ¼ until you have determined highest RPM.
Where is the idle screw on a Keihin carb?
in that it is located upstream of the throttle valve (slide) and meters air; turning it counter-clockwise leans the mixture off idle. Some carburetors have this screw located downstream of the throttle valve, in this case the screw meters fuel and opening this screw results in a richer mixture.
How do I identify my Keihin carburetor?
Find the serial number near the bottom of the CDK carburetor. Write the number down. Call one of the distributors listed on the keihin-us.com website and give them your serial number. Distributors keep track of serial numbers and will be able to identify your particular carburetor.
How do I know what kind of Keihin carb I have?
Look at the carburetor itself. You will find a number that is usually preceded by two to three letters. This is your model number. This number is needed for all parts orders or repair assistance.
How do you adjust a running rich carburetor?
Regardless of whether or not the engine is running too rich or too lean, bring it down to a very lean mixture by turning both screws a quarter-turn at a time, counter-clockwise, then slowly bringing them back up to an equal and smooth mixture.
Where is idle adjust knob on Keihin PJ series carbs?
This is especially important on Keihin PJ series carbs in that the idle adjust knob ( #4 in illus.) cannot be completely closed. Such an adjustment will result in a sluggish response off idle.
Where is the air / gasoline adjustment screw on a Keihin?
Air/gasoline adjustment screw The carburetor pictured in the exploded view uses an air adjustment screw (#5 in illus.) in that it is located upstream of the throttle valve (slide) and meters air; turning it counter-clockwise leans the mixture off idle.
Where is the carburetor located on a Keihin engine?
Carburetor must be disassembled. The pilot jet is a medium size (¾-1”) brass jet located inside the float bowl next to the needle jet/main jet location. The pilot jet meters the fuel required for engine starting, idling and the initial throttle opening 0-⅛.
Where are the adjustment screws on a carburetor?
Find the adjustment screws on the front of the carburetor. There should be two screws on the front of the carburetor, which are used to adjust the air and fuel mixture. Often these look like flat-head screws and you can use a screwdriver to turn them, adjusting the amount of fuel and air mixing in the carb.