Posted on 2018年9月26日2020年6月24日 by zypcppump How to reset the digital display Share this:Click to share on Twitter (Opens in new window)Click to share on Facebook (Opens in new window)Like this:Like Loading... Post navigationPrevious post: pcp hand pump test normal 3 stage pump, new pump with air dry system, 4 stage pumpNext post: How to assembly back the valves when you fix or maintenance the Yongheng air pump