How do you lean out a Keihin carburetor?
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 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 are carburetors jetted on a Keihin motorcycle?
Carburetors are jetted using stock motorcycles and watercrafts. Any major engine modifications like higher compression pistons and racing exhaust systems may require minor jetting adjustments. The following is a guideline for jetting Keihin carburetors. Perform the jetting in the order given below. 1) Correct Float Height
Is there a 28mm carburetor rebuild kit for PWK?
28mm Motorcycle Carburetor Repair Kit Fit for PWK OKO Spare Jets Set Product Description & Features: 1.28mm motorcycle carburetor repair kit fit for PWK KEIHIN AUTOKAY 28mm Carburetor Rebuild Kit Fits for PWK28 KEIHIN OKO Spare Jets Product Description & Features: Easy to Install A perfect replacement Fits for PWK,
How do you check the float height on a jetting carburetor?
When checking the float height, the float should be resting, but not depressing, the spring-loaded float valve pin. This can be done by tilting the carburetor until the float tab just makes contact with the valve pin. If adjustment is needed, bend the metal tab on the float arm until correct height is obtained.–see example #1 Float Height FCR CR
What do the last two numbers mean in Keihin carbs?
In Keihin carbs either the last two digit or the last letter denote the diameter of the needle. The higher the last two numbers the leaner the needle the lower the letter the richer the needle. By going to a thinner needle there is a larger area between the jet needle and needle jet supplying a richer mixture.