Yamaha YZF-R125 Service Manual: Adjusting the clutch cable free play
1. Check:
Clutch cable free play "a"
Out of specification 
Adjust.
2. Adjust:
- Clutch cable free play
a. Pull back the rubber cover "1" b. Loosen the locknut "2".
c. Turn the adjusting bolt "3" in direction "a" or
"b" until the specified clutch cable free play is
obtained.
d. Tighten the locknut.
e. Place the rubber cover in its original position.
NOTE:
If the specified clutch cable free play cannot be obtained on the handlebar end of the cable, use the adjusting nut on the engine end.
3. Remove:
- Left lower side cowling Refer to "GENERAL CHASSIS" on page 4-1.
a. Loosen the locknut "1".
b. Turn the adjusting nut "2" in direction "a" or "b"
until the specified clutch cable free play is obtained.
c. Tighten the locknut.
4. Install:
- Left lower side cowling Refer to "GENERAL CHASSIS" on page 4-1.
Changing the engine oil
1. Remove:
Right bottom cowling
Right upper side cowling
Right lower side cowling
Refer to "GENERAL CHASSIS" on page 4-1.
2. Start the engine, warm it up for several minutes,
and then tu ...
Cleaning the air filter element
NOTE:
There is a check hose "1" at the bottom of the air
filter case. If dust and/or water collects in this
hose, clean the air filter element and air filter
case.
1. Remove:
Rider seat
...
Other materials:
Removing the valves
The following procedure applies to all of the
valves and related components.
NOTE:
Before removing the internal parts of the cylinder
head (e.g., valves, valve springs, valve seats),
make sure the valves properly seal.
1. Check:
Valve sealing
Leakage at the valve seat Check
the valve
...
Installing the swingarm
1. Lubricate:
Bearings
Spacers
Dust covers
Pivot shaft
2. Install:
Bearings "1"
2. Swingarm
A. Left side
B. Right side
3. Install:
Swingarm adjusting collar "1"
Swingarm "2"
Pivot shaft
Pivot shaft nut "3"
a. Install, and then fully turn in the swingarm adju ...
Electrical components
1. Main switch
2. Clutch switch
3. Front brake light switch
4. Ignition coil
5. Throttle body sensor assembly (intake air
pressure sensor, intake air temperature
sensor, throttle position sensor)
6. FID (fast idle solenoid)
7. Rectifier/regulator
8. Lean angle sensor
9. Starting circui ...