Inspecting The Brake Fluid Level; Brake Fluid Replacement; Cable Inspection And Lubrication - Yamaha BWS YW100E Owner's Manual

PERIODIC MAINTENANCE AND MINOR REPAIR
1. Minimum level line

Inspecting the brake fluid level

Insufficient brake fluid may let air
enter the brake system, possibly
causing the brakes to become inef-
fective.
Before riding, check that the brake
fluid is above the minimum level and
fill when necessary.
Observe these precautions:
9 When checking the fluid level,
make sure the top of the master
cylinder is level by turning the
handlebars.
9 Use only the designated quality
brake fluid. Otherwise, the rub-
ber seals may deteriorate, caus-
ing leakage and poor brake per-
formance.
Recommended brake fluid:
DOT 4
1
NOTE:
If DOT 4 is not available, DOT 3 can
be used.
9 Refill with the same type of
EAU00732
brake fluid. Mixing fluids may
result in a harmful chemical re-
action and lead to poor brake
performance.
9 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.
9 Brake fluid may deteriorate
painted surfaces or plastic parts.
Always clean up spilled fluid im-
mediately.
9 Have a Yamaha dealer check the
cause if the brake fluid level
goes down.

Brake fluid replacement

The brake fluid should be replaced
only by trained Yamaha service per-
sonnel. Have the Yamaha dealer re-
place the following components dur-
ing periodic maintenance or when
they are damaged or leaking:
Cable inspection and lubrica-
tion
w
Damage to the outer housing of
cables may lead to internal rusting
and interfere with the cable move-
ment. Replace damaged cables as
soon as possible to prevent unsafe
conditions.
Lubricate the cables and cable ends.
If a cable does not operate smoothly,
ask a Yamaha dealer to replace it.
6-16
9 oil seals (every two years)
9 brake hoses (every four years)
Recommended lubricant:
Engine oil
EAU00742
EAU02962
EW000112