I read the manual (I always do), but it is extremely basic. It just says how to turn the metronome on while playing or during playback, but nothing about recording. Well, it does say 'You can sound the metronome if you like', but that refers to playing the metronome throughout the recording. Fortunately, by default it doesn't do that, but it does always play a count-in. And that is what I want to turn off because it's very annoying. One workaround is to set it very fast so it's over in half a second (and not a rhythm that throws me off balance), but of course that won't do.
I also did several searches on the internet, but found nothing.