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Braking system
If there is air in the hydraulic circuit, it acts as a bearing, absorbing a large quantity of the pressure from
the brake pump and minimising calliper efficiency when braking. The presence of air is signalled by the
"sponginess" of the brake control and poor braking efficiency.
WARNING
CONSIDERING THE DANGER FOR VEHICLE AND RIDER, IT IS STRICTLY NECESSARY THAT
THE HYDRAULIC CIRCUIT BE AIR PURGED AFTER REFITTING BRAKES AND RESTORING THE
BRAKING SYSTEM TO THE REGULAR USE CONDITIONS.
Undo the two screws of the brake fluid
reservoir «3".
Remove the cover «1".
NOTE
TO AVOID SPILLING FLUID WHILE TOPPING-UP, KEEP
THE FLUID IN THE RESERVOIR PARALLEL TO THE RES-
ERVOIR EDGE (IN HORIZONTAL POSITION).
Remove the gasket «2".
Top-up with oil if required.
Remove the rubber protection cover of the bleed valve «4" and «5".
Connect a transparent pipe to the bleed valve «4" and «5".
NOTE
DO NOT SMEAR THE PADS OR THE DISC WITH BRAKE FLUID.
Place the free end of the transparent pipe into a container.
Operate the brake lever slowly and to the end of the stroke twice or three times and keep it
pulled.
Open the bleed valve «4" and «5", push the lever and, through the transparent pipe, check
if the brake fluid flowing out contains air bubbles.
NOTE
BEFORE RELEASING THE BRAKE LEVER, TIGHTEN THE BLEED VALVE «4" AND «5", SO THAT
AIR DOES NOT GET INTO THE BRAKING SYSTEM.
BRAK SYS - 217

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