If your brakes on the Pulsar RS200 have become slack and the pedal takes a few seconds to return to its original position after being pressed, it indicates a potential issue with the hydraulic brake system. Here are a few possible causes:
Brake Fluid Leak: A leak in the brake system could cause a loss of hydraulic pressure, resulting in slack brakes and a slow pedal return. Check for any signs of fluid leakage around the brake lines, calipers, or master cylinder.
Air in the Brake System: Air can enter the brake system, leading to a spongy or slack brake pedal. This can occur if the brake fluid level gets too low or if the system was not properly bled after servicing. Bleeding the brake system will help remove any air trapped in the lines.
Brake Master Cylinder Issues: The master cylinder is responsible for generating hydraulic pressure in the brake system. If it is failing or has internal seal problems, it can result in a loss of pressure and slack brakes.
Brake Caliper Problems: The brake calipers house the brake pads and are responsible for applying pressure to the rotor to create friction and stop the bike. If a caliper is sticking or not functioning properly, it can lead to slack brakes and slow pedal return.
Brake Pad Wear: Excessively worn brake pads can cause the pedal to feel soft and lead to reduced braking performance. Check the condition of your brake pads to ensure they are not too worn down.
Given the nature of the issue and the potential safety implications, it is strongly recommended to have a professional mechanic inspect and diagnose the problem with your Pulsar RS200's braking system. They will be able to provide a more accurate diagnosis and carry out the necessary repairs to restore your brakes to proper working order.