PIAGGIO MSS X9 EVOLUTION 250 Workshop Manual page 190

Braking system
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 pipe-calliper fitting
Overhaul
1) Remove the brake lever by loosening the fixing screw;
open the cover (2) and take out the diaphragm (3);
2) Remove the cap and unscrew the internal parts in the specified order;
3) Check that:
- The body of the pump shows no signs of internal damage or corrosion;
- The piston shows no sign of damage or abnormal wear;
- The piston return spring is in good condition.
Refitting
Reinstall the individual parts in the reverse order to the removal, paying attention to the correct posi-
tioning of the rubber parts in order to ensure leak tightness.
1. Tank cover screw
2. Tank cover
3. Diaphragm
4. Bellows
5. Seal ring
6. Piston
7. Gasket
8. Spring
9. Tank
CAUTION
ALL THE SEALS AND GASKETS MUST BE REPLACED EVERY TIME THE PUMP IS SERVICED.
BRAK SYS - 190
16 ÷ 20
MSS X9 Evolution 250