Join Date: Sep 2010
Location: West Sussex United Kingdom
It should not do that. It can be caused by warped disc or play in wheel bearings or air in the braking system.
Brake fluid on the FJR should be changed every year, regardless of mileage as it adsorbs moisture that then causes corrosion in the ABS system.
Changing fluid is quite easy, but do not let the fluid drain completely from the reservoir as air will get in the system. Just keep topping up and use plenty of fluid.
It is fairly cheap and has a short shelf life once opened, so just use it up !
Always read up in a workshop manual first.
Past bikes; Honda 50 Suzuki 50 Yam XS250 Yam XJ650 Yam XJ 900 Honda CX650 Turbo Yam FJ1100 Yam FJ1200 (2) Honda ST1100 (2) Yam FJR1300 (5) 670,000 miles !