by Knowledge » Tue Sep 19, 2017 1:00 pm
Yes. They provide a reliable "stop" to the end of the cable. They are designed to rest on a lip inside the choke lever sleeve so that the outer cable is held securely rather than just relying on the soft ferrule on the end of the outer cable.
I have made hundreds of short choke cables for TS1-side carburettors, and although I had other solutions to stop the outer being pulled into the sleeve, I have now reverted to putting the washer in place as it is both effective and cheap (and I have a good source of washers too).
If can get away with retaining the washer, I would, but is there a problem there that you are trying to solve by removing it?