Fit - Derbi GP1 50 cc Workshop Manual

Purge the air completely from the master cylinder using this
procedure.
- Remove the transparent plastic cap from the bleed nipple
and place the other end of the pipe in a container.
- Repeat the following procedure until there is no air left
emerging from the plastic pipe:
- Pump the brake lever until it becomes hard and holds the
brakes down.
- Open and close the purge valve quickly while keeping the
brake on.
- Release the brake.
N.B.
CHECK THE FLUID LEVEL FREQUENTLY DURING THE BLEE-
DIING OPERATION AND REPLENISH THE RESERVOIR WITH
BRAKE FLUID WHEN NECESSARY. IF THE RESERVOIR EMPTIES
COMPLETELY OF BRAKE FLUID AT ANY TIME THE DURING
BLEEDING PROCEDURE, PERFORM THE BLEEDING PROCE-
DURE ALL OVER AGAIN FROM THE BEGINNING, SINCE AIR
WILL HAVE ENTERED THE PIPE. TAP THE BRAKE PIPE LIGHT-
LY FROM THE CALLIPER TO THE RESERVOIR TO ACHIEVE A
MORE COMPLETE BLEEDING.
- Extract the transparent plastic pipe.

Fit:

- Reservoir cap.
- Cap securing screws.
-Tighten the bleed valve and fit the rubber hood.
- Check brake fluid level.
- Once the bleeding process has been carried out, check the
efficiency of the brake to see if there is any resistance or any
fluid loss.
WARNING
WHEN WORKING WITH THE DISK BRAKE, TAKE THE FOLLO-
WING PRECAUTIONS:
1) NEVER RE-USE BRAKE FLUID.
2) DO NOT USE FLUID FROM A CONTAINER THAT HAS
BEEN LEFT OPEN OR HAS BEEN LEFT UNUSED FOR A PRO-
LONGED PERIOD OF TIME.
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