I found this manual that seems like it might be a good manual at https://www.scribd.com/document/486330576/China-patcher-users-manual71719-pdf
I setup an acct (free), uploaded a different manual and it allowed me to download China Patcher Users Manual71719 PDF 13 page manual. Just glancing at the manual it seems like it might be the best around. I also have a pdf copy of the manual that comes with the machine - as you'd expect it's a poor manual.
Since you're new to the machine you might like to look at the facebook group for the machine - it's active and some good folks to help.
https://www.facebook.com/groups/1646031288779869/questions
I sure wish they'd move the group form FB to a real forum - that would be MUCH easier to read, and find old posts.
I just realized I could attach a file - so it's attached and you don't have to fool with the scribd place.
Ken H>
China-patcher-users-manual.pdf