If your running with no washer ,your running very rich ,and your mileage will suffer greatly ,and you may even foul your sparkplug .I don't think any of us use less than 1/2 washer(2-#4 brass washers) ,and that is usually a  stock bike at or near sea level.

Working through a carb problem myself on a customer's bike, so would someone care to point out the spacer you're discussing?

The spring #9 applies pressure on the clip #7 installed in the needle #10, the spacer #6 limits how far the needle is pushed up toward the plate ##.

batman wrote on 03/24/17 at 08:02:21:


If you are buying brass ones - check the OD.  I bought #4 brass washers and they had too large of an OD, and would not fit into the recess in the slide.

One member on this forum had the same problem - he put the washers onto a #4 screw, tightened the nut down, installed the screw into his drill, then held the washers up to his grinder to cut down the OD of the washer.  (I couldn't find the thread where he posted this solution with photos).

buster6315 wrote on 03/23/17 at 07:51:59:


If your engine is stock, running without any spacers on the needle will result in a RICH midrange, decreasing fuel economy and engine efficiency.
The JETSET is inexpensive for what you get; 3 main jets, 3 pilot jets, 3 washers, a float bowl gasket and shipping is included for US addresses.
$29.95

If you just want the washers I will send some to you.