2003 Polaris ATV Trail Boss 330 Factory Service Manual, Page 167Get this manual
BRAKES The upper most (inner) bleed screw and brake line (A) is for the left hand brake system The lower (outer) bleed screw and brake line (B) is for the auxiliary brake systemNOTE: Do not remove brake lever when reservoir fluid level is low
FLUID REPLACEMENTBLEEDING PROCEDURE
NOTE: When bleeding the brakes or replacing the fluid always start with the caliper farthest from the master cylinderCAUTION: Always wear safety glasses
5Add brake fluid to the upper level mark on reservoirCAUTION: Brake fluid will damage finished surfacesDo not allow brake fluid to come in contact with finished surfacesPolaris DOT Brake Fluid (PN 2870990)
BRAKE BLEEDINGFLUID CHANGE
NOTE: This procedure should be used to change fluid or bleed brakes during regular maintenance