As the brake pads wear, the brake fluid level drops.
The brakes do not need to be adjusted, but the brake fluid level and brake pad wear should be checked regularly. The brake system should be inspected frequently to ensure there are no fluid leaks. If the free play of the brake lever or pedal has become abnormally large, and the wear of the brake pads has not reached the maximum permissible value (see here), There may be air in the brake system and it should be bled. Contact your authorized Honda dealer to perform this operation.
Brake fluid level in the front brake circuit
Check the fluid level with the motorcycle upright. It should be higher than the bottom (LOWER) marks (1).
If the level is at the LOWER mark (1) or below it, check the condition of the brake pads (see here).
Worn pads must be replaced. If the pads are not worn, check for brake fluid leakage from the system.
It is recommended to use Honda DOT 4 fluid as brake fluid, supplied in hermetically sealed containers, or its full equivalents.
Front brake fluid reservoir: (1) Lower level mark LOWER
Brake fluid level in the rear brake circuit
Check the fluid level with the motorcycle upright. It should be between the UPPER mark (1) and the lower mark LOWER (2) If the level is at the LOWER mark (2) or below it, check the condition of the brake pads (see here).
Worn pads must be replaced. If the pads are not worn, check for brake fluid leakage from the system.
It is recommended to use Honda DOT 4 fluid as brake fluid, supplied in hermetically sealed containers, or its full equivalents.
Rear brake fluid reservoir: (1) Upper level mark UPPER; (2) Lower level mark LOWER
Other control checks
Make sure there are no brake fluid leaks. Check for signs of wear, cracks or other damage to hoses and connections.