If the tank is not filling all the way (there should be a fill line on the inside of the tank), carefully bend the bulb of the float valve up a bit and see if the tank will fill.
如果水箱没有充满正常水量(水箱内侧应该有一条水位线)，慢慢地弯曲一下浮囊阀，看水位会不会上升。
For instance, most Kohler tanks have a proper fill line marked inside the tank.
比如，大多数Kohler水箱内侧都会标记出标准水位线。
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