Keihin pwk 383/12/2023 ![]() ![]() If it is more than 2 turns then you need a smaller idle jet. If it is less than 1 turn then you need a bigger idle jet. This should result to be within 1 to 2 turns out. Then slowly turn clockwise the air screw till the idle speed starts to drop off due to starting to be too rich (but which is good for starting w/o the choke in warm weather). Then slowly turn the air screw till you find where it idles the fastest, then readjust the slide stop for the same fast idle as before if it has changed. Turn in the slide stop screw till you have a slightly fast idle. If you hover the mouse pointer over a cell with a red corner then a message will pop up telling you about that cell.Ġ) First make sure your real life idle jet size is correct. ![]() ![]() Here's how to use it: Enter data into all the light blue cells of the spreadsheet and the program will graph the jetting. Below the instructions here are the needle and needle jet info that you will need to know such as the inner diameter of the needle jet of your carb. Jetting Keihin Carbs Jetting Keihin carburetorsĬlick here for my page verifying the jetting calculator for Keihin PWK/ PJ/ PE carbs.īelow is a screenshot of my spreadsheet for Keihin carbs (PWK, PJ, PE).
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