Zero Motorcycles FX 2022, Owner'S Manual

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General Maintenance
6.10
General Maintenance
Brakes
This section describes how to maintain the brake system of your
Zero FX/FXE/FXS motorcycle. It covers the ABS (Anti-lock Brake
System), brake pad examples (specific brake pads for front and
rear are shown), and maintaining brake fluid levels and types for
front and rear systems.
Bleeding the Brake System
Your motorcycle is equipped with ABS. You can only bleed the
brake system if fluid still remains in the HCU (Hydraulic Control
Unit).
Bleeding a dry HCU requires an evacuation and fluid fill
machine.
Brake Fluid Level Inspection
CAUTION: Do not spill brake fluid on painted surfaces; the
finish could be damaged. Spilling brake fluid on the body panels
will cause them to crack.
Always place a shop towel under the master cylinder reservoir
prior to removing cover/cap.
Low fluid levels may indicate worn brake pads or a leak in the
hydraulic system. Inspect the brake pads for wear and/or the
hydraulic system for leaks. Use only new DOT 4 brake fluid from
a sealed container.
Front Brake Fluid Reservoir
Inspect the level of the front brake fluid through the sight glass
(A). If the fluid level is visibly below the low level indicator (B),
brake fluid must be added. Clean any dirt or debris from the
cover (C) before opening the reservoir.
Note: The motorcycle should be in an upright position prior to
checking fluid level.
1. Remove the two Phillips screws securing the cover onto the
reservoir.
2. Add new DOT 4 brake fluid.
3. Inspect the cover seal, ensuring that it is free of any wear or
damage and that it is positioned correctly.
4. Install the cover and tighten the Phillips screws. Torque to
5 lb in (0.56 Nm).
Zero Owner's Manual (FX and FXS).book Page 10 Thursday, May 13, 2021 10:53 AM