Posted: May 25, 2022 10:51 pm
by Chief Engineer
I've ridden a couple 400 fours and its predecessor the 350 four. the 400 was a great improvement.

I currently have a 1976 750 Four, and a 1975 550 four. Both require a little TLC on a regular basis.

The general-science link fails, should I be able to go to the home page to find this.