?? Well... You drain the reservoir. Because of that, invariably the lines will get air in them so you have to bleed them. It worked out fine for me because I wanted to change fluid anyway. It was time. The old fluid had started to discolor. Anyway, get one of those vacuum pump deals. It makes bleeding the brakes a cinch. Depending on the mileage on your bike you may want to drain and refill your clutch system while you are at it.vtx_cruiser said:I was reading the directions on L&R's website for installing their forward controls for the 1800 Retro. It says that you have to drain the brakes both front and rear. Does that mean the whole braking system or just the linked part?