Increasing the effectiveness of the rear wheel brakes on your Yamaha FZ (rear disc model) can be achieved through a few steps. Here's what you can do:
Brake adjustment: Start by checking the brake lever and ensuring it is adjusted properly. There should be a small lever or adjustment nut near the brake lever that allows you to adjust the position and free play of the lever. Make sure the lever is positioned comfortably within your reach and adjust the free play to eliminate any excessive slack.
Brake pad condition: Inspect the brake pads to ensure they are in good condition. Worn-out or glazed brake pads can reduce braking performance. If the brake pads are worn down significantly, replace them with new ones. Also, clean any brake dust or debris that might have accumulated on the pads or caliper.
Brake fluid check: Verify the brake fluid level in the rear brake reservoir. If the fluid is low, top it up with the recommended brake fluid as specified in your motorcycle's manual. Additionally, if the brake fluid is old or contaminated, it's recommended to flush and replace it with fresh fluid.
Brake caliper maintenance: Ensure the brake caliper and its components are clean and free from any dirt or debris. Lubricate the caliper slide pins with an appropriate brake caliper lubricant to ensure smooth movement. Sticking or seized caliper components can affect brake performance.
Brake rotor inspection: Check the condition of the rear brake rotor. If it is heavily worn, damaged, or has grooves, it may need to be replaced. A damaged rotor can reduce braking efficiency. Additionally, if the rotor is excessively dirty or glazed, clean it with brake cleaner to restore optimal braking performance.
Tire pressure: Ensure that your rear tire is properly inflated to the recommended tire pressure. Underinflated tires can affect braking performance and stability.
It's important to note that modifying the brake system beyond these general maintenance and adjustment procedures may require professional expertise or consultation with authorized technicians to ensure safety and compliance with legal regulations.