SG250 Owner’s and Service Manual
www.CSCMotorcycles.com
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The front brake rotor is each retained by Allen head bolts. Take care when removing these for the first
time; they are Loctited in place at the factory and it is easy to strip the Allen drive socket (we
recommend heating the head of the bolt first to soften the adhesive). CSC stocks replacement rotors
and Allen bolts; if you need a new rotor please call us at 909 445 0900.
Flushing and Replacing the Brake Fluid
It is a good idea to bleed the front brake every year, and to
flush and replace the brake fluid every two years. Use only
DOT4 brake fluid. We sell brake fluid suitable for use in your
SG250 motorcycle; if you need brake fluid please call us at
909 445 0900. Caution! Brake fluid can damage painted
components. Promptly wipe up spilled brake fluid.
To drain the system, open the master cylinder. Attach a
hose to the caliper bleed port and route it to a suitable
container. Open the caliper bleed port with an 8mm wrench
and allow the brake fluid to drain. Note that the drain hose
is not shown in the photo to allow clarity in identifying the
caliper bleed port.
After draining the brake fluid, add fluid to the master cylinder and bleed the brakes as described below.
Bleeding the Brakes
Caution! Brake fluid can damage painted components. Promptly wipe up spilled brake fluid.
To bleed the brakes, attach a hose to the brake caliper bleed port and route it to a suitable container.
Open the master cylinder, taking care not to spill any brake fluid.
Open the caliper bleed port while applying the brake lever, and before releasing the brake lever, close
the bleed port. It’s important not to allow the bleed port to remain open while releasing the brake
lever or you will suck air into the system. Repeat this open-the-bleed-port, apply-the-brake-lever,
close-the-bleed-port, add-brake-fluid process until the master cylinder is full. Reinstall the brake
master cylinder cover.
Prior to taking the motorcycle on the street, operate it slowly and apply the brakes several times.
Brake Troubleshooting
Brake troubleshooting procedures are summarized below.
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