I just bought this machine and took it for my first ride today. I noticed when I bought it the brake lever required a lot of force to squeeze to get stopping power. On my ride today I lost braking all together, the hand lever pulled all the way to the bars and the foot lever also gave out and didn’t do anything. I kept the speeds low on the way home and a few minutes later full pressure returned to the foot pedal and the hand brake lever.

I have no idea what would cause this and don’t know where to start looking. I did a quick check around, I don’t see any leaks and the brake fluid reservoir is full as normal. Any ideas?

Thanks!