Way out in the country the belt quit working. I looked down and it was not broken but was loose.
I stopped and saw the tension lever flapping. It turns out the spring which holds the lever had broken. I took a bungee cord and looped and pulled the lever towards the seat. This worked. Very glad because I was miles from help and no cellphone signal.
Don't know why the spring broke. You can see the connector hole at the bottom of the lever. Also you can see that the top of the spring, the part with the hook, is missing.
Great ride though! In my Virtual Pretend Bike Journey I am now at the west border of Texas!