Adjusting The Throttle Cable Free Play; Adjusting The Front Brake; Adjusting The Rear Brake Light Switch - Yamaha YZFR1Y Assembly Manual

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• Adding water instead of coolant low-
ers the antifreeze content of the cool-
ant. If water is used instead of
coolant, check and correct the anti-
freeze concentration of the coolant.
• Use only distilled water. Soft water
may be used if distilled water is not
available.
b
a
3. Start the engine, warm it up for several
minutes, and then turn it off.
4. Check:
• coolant level
Before checking the coolant level, wait a
few minutes until it settles.
E. ADJUSTING THE THROTTLE
CABLE FREE PLAY
1. Measure:
• throttle cable free play (a)
Out of specification → Adjust.
Throttle cable free play (at the flange of
the throttle grip)
3–5 mm (0.12–0.20 in)
2. Adjust:
a. Slide back the rubber covers (1).
b. Loosen the locknut (2).
c. Turn the adjusting nut (3) in direction
(a) or (b) until the specified throttle ca-
ble free play is obtained.
Direction (a)
Throttle cable free play is increased.
Direction (b)
Throttle cable free play is decreased.
d. Tighten the locknut.
e. Slide the rubber covers to their original
position.
After adjusting the throttle cable free
play, turn the handlebar to the right and
to the left to ensure that this does not
cause the engine idling speed to
change.
F. ADJUSTING THE FRONT
BRAKE
1. Adjust:
• brake lever position
(distance (a) from the throttle grip to
the brake lever)
a. While pushing the brake lever forward,
turn the adjusting knob (1) until the
brake lever is in the desired position.
Be sure to align the setting on the adjusting
knob with the arrow mark (2) on the brake
lever.
Direction (b)
Distance (a) is increased.
Direction (c)
Distance (a) is decreased.
After adjusting the brake lever position,
make sure that there is no brake drag.
A soft or spongy feeling in the brake le-
ver can indicate the presence of air in
the brake system. Before the vehicle is
operated, the air must be removed by
bleeding the brake system. Air in the
brake system will considerably reduce
braking performance and could result in
loss of control and possibly an acci-
a
dent. Therefore, check the brake system
and bleed if necessary.
b
G. ADJUSTING THE REAR BRAKE
1. Measure:
• brake pedal position
(distance (a) from the center of the
footrest bracket bolt to the center of the
brake pedal)
Out of specification → Adjust.
Brake pedal position (below the center of
the footrest bracket bolt)
12–18 mm (0.47–0.71 in)
2
3
1
1
a
b
1
a
2
c
-10-
a
2. Adjust:
• brake pedal position
a. Loosen the locknut (1).
b. Turn the adjusting bolt (2) in direction
(a) or (b) until the specified brake pedal
position is obtained.
Direction (a)
Brake pedal is raised.
Direction (b)
Brake pedal is lowered.
After adjusting the brake pedal position,
make sure that the end of the adjusting
bolt (c) is visible through the hole (d).
c. Tighten the locknut to specification.
Locknut
16 Nm (1.6 m•kgf, 11 ft•lbf)
A soft or spongy feeling in the brake
pedal can indicate the presence of air in
the brake system. Before the vehicle is
operated, the air must be removed by
bleeding the brake system. Air in the
brake system will considerably reduce
braking performance and could result in
loss of control and possibly an acci-
dent. Therefore, check the brake system
and bleed if necessary.
After adjusting the brake pedal position,
make sure that there is no brake drag.
H. ADJUSTING THE REAR BRAKE
LIGHT SWITCH
• The rear brake light switch is operated by
the movement of the brake pedal.
• The rear brake light switch is properly ad-
justed when the brake light comes on just
before the braking effect starts.
1. Check:
• rear brake light operation timing
Incorrect → Adjust.

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