Yamaha TT-R230Y, Owner'S Manual

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PERIODIC MAINTENANCE AND ADJUSTMENT
7
EAU37001
Checking the front brake
fluid level
1. Lower level
Insufficient brake fluid may allow air to
enter the brake system, possibly caus-
ing 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 sys-
tem for leakage.
Observe these precautions:
z
When checking the fluid level, make
sure that the top of the master
cylinder is level by turning the
handlebars.
z
Use only the recommended quality
brake fluid, otherwise the rubber
seals may deteriorate, causing
leakage and poor braking
performance.
Recommended brake fluid:
DOT 4
TIP
If DOT 4 is not available, DOT 3 can be
used.
z
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and lead
to poor braking performance.
z
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.
z
Brake fluid may deteriorate painted
surfaces or plastic parts. Always
clean up spilled fluid immediately.
z
As the brake pads wear, it is normal
for the brake fluid level to gradually
go down. However, if the brake fluid
level goes down suddenly, have a
Yamaha dealer check the cause.
EAU22721
Changing the brake fluid
Have a Yamaha dealer change the brake
fluid at the intervals specified in the TIP
after the periodic maintenance and lu-
brication chart. In addition, have the oil
seals of the brake master cylinder and
caliper as well as the brake hose re-
placed at the intervals listed below or
whenever they are damaged or leaking.
z
Oil seals: Replace every two years.
z
Brake hose: Replace every four
years.
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