Yamaha YZF-R125 Service Manual: 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.
2. Remove:
- Right side panel Refer to "GENERAL CHASSIS" on page 4-1.
3. Adjust:
- Throttle cable free play
a. Loosen the locknut "1" on the accelerator cable.
b. Turn the adjusting nut "2" in direction "a" or "b" until the specified throttle cable free play is obtained.
c. Tighten the locknut. 
NOTE:
If the specified throttle cable free play cannot be obtained on the throttle body end of the cable, use the adjusting nut on the handlebar end.
a. Slide back the rubber cover "1".
b. Loosen the locknut "2".
c. Turn the adjusting nut "3" in direction "a" or "b" until the specified throttle cable free play is obtained.
d. Tighten the locknut.
e. Slide the rubber cover to its original position.
| WARNING After adjusting the throttle cable free play, start the engine and turn the handlebar to the right or left to ensure that this does not cause the engine idling speed to change. |
4. Install:
- Right side panel Refer to "GENERAL CHASSIS" on page 4-1.
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
minut ...
Checking the spark plug
1. Remove:
Right side cover
Refer to "GENERAL CHASSIS" on page 4-1.
2. Disconnect:
Spark plug cap
3. Remove:
Spark plug
CAUTION:Before removing the spark plug, blow away
...
Other materials:
Loading
Adding accessories or cargo to your
motorcycle can adversely affect stability
and handling if the weight distribution
of the motorcycle is changed. To avoid
the possibility of an accident, use extreme
caution when adding cargo or
accessories to your motorcycle. Use
extra care when ridi ...
Intake air pressure sensor
1. Check:
Intake air pressure sensor output voltage
Out of specification Replace the throttle
body.
a. Connect the pocket tester (DC 20 V) to the
throttle body sensor assembly coupler as
shown.
Positive tester probe
pink/white "1"
Negative tester probe
gray/black "2"
...
Assembling the water pump
1. Install:
Water pump seal "1"
(into the water pump housing "2")
CAUTION:Never lubricate the water pump seal
surface
with oil or grease.
NOTE:
Install the water pump seal with the special
tools.
Install the water pump seal with the special
tools to the specifi ...