Cleaning a Bunn coffee maker is a simple process that can be completed in a few minutes with the help of a spring tool. To clean the coffee maker, first remove the filters and place them in a bowl. Next, unscrew the top of the coffee maker and remove the water tank. Pour out all of the water and place the coffee maker in an area where it will not touch any other objects. Screw back on top of coffee maker and screw in filter. Replace water tank if needed. Now, use a plunger to push all of the liquid out of the machine and into the bowl below. Use your hands to mix everything together until it is smooth. Pour this mixture into the filterless water tank and screw on top again. Turn on machine and enjoy your fresh brewed coffee!