Adjusting The Engine Idling Speed; Adjusting The Throttle Cable Free Play - Yamaha YZF-R125 Service Manual

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15.Install:
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
EAS20610

ADJUSTING THE ENGINE IDLING SPEED

NOTE:
Prior to adjusting the engine idling speed, the air
filter element should be clean, and the engine
should have adequate compression.
1. Start the engine and let it warm up for several
minutes.
2. Remove:
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
3. Lift the fuel tank. (Do not disconnect the fuel
hose, fuel drain hose, and couplers.)
Refer to "FUEL TANK" on page 7-1.
4. Install:
• Digital tachometer
(onto the spark plug lead)
5. Check:
• Engine idling speed
Out of specification → Adjust.
Engine idling speed
1300–1500 r/min
6. Remove:
• Right side panel
Refer to "GENERAL CHASSIS" on page 4-1.
7. Adjust:
• Engine idling speed
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a. Turn the pilot screw "1" in direction "a" or "b"
until the specified engine idling speed is ob-
tained.
Direction "a"
Engine idling speed is increased.
Direction "b"
Engine idling speed is decreased.
L LLL L LLL L L LLL L
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1
a b
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8. Remove:
• Digital tachometer
9. Install:
• Fuel tank
Refer to "FUEL TANK" on page 7-1.
• Right side panel
• Rider seat
Refer to "GENERAL CHASSIS" on page 4-1.
10.Adjust:
• Throttle cable free play
Refer to "ADJUSTING THE THROTTLE CA-
BLE FREE PLAY" on page 3-6.
EAS20660
ADJUSTING THE THROTTLE CABLE FREE
PLAY
NOTE:
Prior to adjusting the throttle cable free play, the
engine idling speed should be adjusted.
1. Check:
• Throttle cable free play "a"
Out of specification → Adjust.
MMM
2. Remove:
• Right side panel
Refer to "GENERAL CHASSIS" on page 4-1.
3. Adjust:
• Throttle cable free play
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Throttle body end
a. Loosen the locknut "1" on the accelerator ca-
ble.
b. Turn the adjusting nut "2" in direction "a" or "b"
until the specified throttle cable free play is
obtained.
LLL
3-6
Throttle cable free play
3.0–5.0 mm (0.12–0.20 in)
Throttle cable free play
3.0–5.0 mm (0.12–0.20 in)
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ENGINE
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