Determination of the carb spacer using the foot print
 

An important step is to verify that your selected carb spacer fits on the carburetor. To do this, download the footprint of your preferred carb spacer. Print out the footprint. In the print settings, make sure that the scaling of the printout is 100%. After printing, you can check the scaling by checking the two scales on the printed sheet with a ruler. If everything is correct, cut out the template of the carb spacer. By the way, you do not need to cut out the channel holes and screw holes, because it is only a question of whether the outer contour of the carb spacer fits on your carburetor. Place the template on the carburetor. With a strong light source in the background, you can align the carburetor bolt holes. If it fits, then CONGRATULATIONS!!.... You are now an important step further and have just selected the correct carb spacer type.