2004 Yamaha Motorsports Vino 125 Owners Manual - Page 47

PERIODIC MAINTENANCE AND MINOR REPAIR EAU32341 Checking the brake fluid level 1 LOWER MIN Observe these precautions: 8 When checking the fluid level, make sure that the top of the master cylinder is level by turning the handlebars. Use only the recommended quality brake fluid, otherwise the rubber seals may deteriorate, causing leakage and poor braking performance. Recommended brake fluid: DOT 4 8 Refill with the same type of brake fluid. Mixing fluids may result in a harmful chemical reaction and lead to poor braking performance. 8 Be careful that water does not enter the master cylinder when refilling. Water will significantly lower the boiling point of the fluid and may result in vapor lock. 8 Brake fluid may deteriorate painted surfaces or plastic parts. Always clean up spilled fluid immediately. 8 As the brake pads wear, it is normal for the brake fluid level to gradually go down. However, if the 6-13 brake fluid level goes down suddenly, have a Yamaha dealer check the cause. EAU22720 Changing the brake fluid Have a Yamaha dealer change the brake fluid at the intervals specified in the NOTE after the periodic maintenance and lubrication chart. In addition, have the oil seals of the brake master cylinder and caliper as well as the brake hose replaced at the intervals listed below or whenever they are damaged or leaking. 8 Oil seals: Replace every two years. 8 Brake hose: Replace every four years. 1 2 3 4 5 6 7 8 9 ZAUM00** 1. Minimum level mark Insufficient brake fluid may allow air to enter the brake system, possibly causing it to become ineffective. Before riding, check that the brake fluid is above the minimum level mark and replenish if necessary. A low brake fluid level may indicate worn brake pads and/ or brake system leakage. If the brake fluid level is low, be sure to check the brake pads for wear and the brake system for leakage.