Checking The Brake Light Switches; Adjusting The Rear Brake Light Switch; Checking And Lubricating The Cables; Checking The Trhottle Grip Operation - Yamaha YZF-R25 Service Manual

TIP
Before checking the coolant level, wait a few
minutes until the coolant has settled.
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CHECKING THE BRAKE LIGHT SWITCHES

1. Check:
• Front brake light switch operation
• Rear brake light switch operation
When operating the brake lever and brake
pedal, confirm that the brake light turns on.
Faulty → Refer to "CHECKING THE
SWITCHES" on page 8-77.
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ADJUSTING THE REAR BRAKE LIGHT
SWITCH
TIP
The rear brake light switch is operated by move-
ment of the brake pedal. The rear brake light
switch is properly adjusted when the brake light
comes on just before the braking effect starts.
1. Check:
• Rear brake light operation timing
Incorrect → Adjust.
2. Adjust:
• Rear brake light operation timing
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a. Hold the main body "1" of the rear brake light
switch so that it does not rotate and turn the
adjusting nut "2" in direction "a" or "b" until the
rear brake light comes on at the proper time.
Direction "a"
Brake light comes on sooner.
Direction "b"
Brake light comes on later.
▲ ▲▲▲ ▲ ▲▲▲ ▲ ▲ ▲▲▲ ▲
▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼
1
2
a b
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PERIODIC MAINTENANCE
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CHECKING AND LUBRICATING THE
CABLES
The following procedure applies to all of the in-
ner and outer cables.
EWA13270
WARNING
Damaged outer cable may cause the cable to
corrode and interfere with its movement. Re-
place damaged outer cable and inner cables
as soon as possible.
1. Check:
• Outer cable
Damage → Replace.
2. Check:
• Cable operation
Rough movement → Lubricate.
TIP
Hold the cable end upright and pour a few drops
of lubricant into the cable sheath or use a suit-
able lubricating device.
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▼▼▼
CHECKING THE THROTTLE GRIP
OPERATION
1. Check:
• Throttle cables
Damage/deterioration → Replace.
• Throttle cable installation
Incorrect → Reinstall the throttle cables.
Refer to "HANDLEBARS" on page 4-55.
2. Check:
• Throttle grip movement
Rough movement → Lubricate or replace the
defective part(s).
TIP
With the engine stopped, turn the throttle grip
slowly and release it. Make sure that the throttle
grip turns smoothly and returns properly when
released.
▲▲▲
Repeat this check with the handlebar turned all
the way to the left and right.
3-26
Recommended lubricant
Engine oil or a suitable cable lu-
bricant
Recommended lubricant
Suitable cable lubricant