To reverse the seat disc, unscrew the disc screw and disassemble the disc washer and disc rubber from the disc holder assembly.

为了翻转阀座阀瓣，则要拧松阀瓣螺丝，从阀瓣固定器总成拆解阀瓣垫圈和阀瓣橡胶。

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Tighten the disc height adjusting screw.

压紧盘片，调整螺旋高度。

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Loosening the screw using a commercially available electric screwdriver can cause the shaft bevel gear and threaded disc to move inwards out of the splines rendering the screw ineffective.

用商用电动螺丝刀松开螺钉可能导致轴锥齿轮和螺纹盘向内移出花键，致使螺钉失效。

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