This morning with my girlfriend on pillion, my back break just failed. The pedal seemed to had lost its resistance and would push all the way down without effect. I pulled over to check and all the springs were attached and in place, the break fluid container is full, and nothing seemed loose or broken. I got back on and after pumping a bit and leaving it for a while, I tried again and it worked. I stress tested it a bit more and it seems good again.

I've never had this, anyone else ever had this happen to them?

 

Sounds like air/moisture in the system. It's a good idea to flush/bleed the brakes
about every other season, to remove contaminants. I'm betting if you look at the fluid
it is a murky brown color. Do a search in the how-to mechanical for a good pictorial
and discussions on this procedure.

Ern

 

Not so. Just been for my 24k service and have new fluid.

 

Then take it back and have them re-bleed the line.
This should count as warrenty work.

Ern