PIAGGIO Runner 125 - Fill; Front brake pump

Fill
Front
- Rest the scooter on its stand on level ground.
- Remove the front handlebar cover.
- Remove the brake pump cover unscrewing the two screws.
- Refill the brake system tank up to the maximum level with the prescribed fluid.
- Connect the bleeding fitting to the appropriate tool tube (Mityvac manual pump).
- Actuate the tool at the bleed fitting, at the same time constantly top up the brake reservoir to prevent
air being drawn into the system, until no more air escapes at the bleed fitting:
The operation is finished when just oil comes out of the bleed screws.
- Close the bleed screw and tighten to the prescribed torque.
N.B.
IF AIR CONTINUES TO COME OUT DURING THE BLEED OPERATION, EXAMINE ALL THE FIT-
TINGS. IF SAID FITTINGS DO NOT SHOW SIGNS OF BEING FAULTY, LOOK FOR THE AIR INPUT
AMONG THE VARIOUS SEALS ON THE PUMP AND CALLIPER PISTONS. WHEN CARRYING OUT
THE OPERATION, BRAKE FLUID MAY LEAK FROM THE BLEED SCREW ON THE CALLIPER AND
ON THE DISC. IN THIS CASE; CAREFULLY CLEAN THE CALLIPER AND DEGREASE THE BRAKE
DISC.
Specific tooling
020329Y MityVac vacuum-operated pump
Locking torques (N*m)
Oil bleed screw 8÷12
Front brake pump
Removal
1) remove the front and rear handlebar covers;
2) placing a suitable container to catch the oil, dis-
connect the oil pipe from the calliper and work the
brake lever until no more oil comes out;
3) disconnect the oil pipe from the pump then un-
screw the two u-bolt clamping screws and remove
the pump.
- On refitting, tighten up the fitting to the specified
torque and bleed the system.
Locking torques (N*m)
Brake fluid pump-hose fitting 16 ÷ 20
Runner 125 - 200 Braking system
BRAK SYS - 253