1987-2004 Kawasaki Mojave KSF250 Service Manual, Page 150Get this manual
NOTE oReplenish the fluid in the reservoir as often as necessary to keep it from running completely out oRepeat the above steps one more time for the other front disc brake-Bleed the air from the lines (continue with Bleeding the Brake)
Filling up the Brake Line
Bleed the air from the brake whenever brake lever or pedal action feels soft or spongy, after the brake fluid is changed, or whenever brake line fitting has been loosened for any reason-Remove the reservoir cap, and check that there is plenty of fluid in the reservoirThe fluid level must be checked several times during the bleeding operation and replenished as necessaryIf the fluid in the reservoir runs completely out any time during bleeding, the bleeding operation must be done over again from the beginning since air will have entered the line-With the reservoir cap off, slowly pump the brake lever or pedal several times until no air bubbles can be seen rising up through the fluid from the holes at the bottom of the reservoirThis bleeds the air from the master cylinder end of the line