If your toilet bowl doesn’t refill properly after flushing check the refill tube inside the tank. This small tube should be clipped to the overflow pipe directing water into the bowl during refilling. A disconnected or kinked refill tube prevents bowl refilling. The fill valve may also be malfunctioning and need replacement. Adjust the water level in the tank by turning the float adjustment screw. A partially clogged jet hole under the rim can also reduce bowl refill.