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:
Checking the valves and valve guides
The following procedure applies to all of the
valves and valve guides.
1. Measure:
Valve-stem-to-valve-guide clearance
Out of specification Replace the
valve
guide.
Valve-stem-to-valve-guide clearance =
Valve guide inside diameter "a" -
Valve stem diameter "b"
2. Replace:
...
Checking the radiator
1. Check:
Radiator fins
obstruction clean.
Apply compressed air to the rear of the radiator.
Damage repair or replace.
NOTE:
Straighten any flattened fins with a thin, flat-head
screwdriver.
2. Check:
Radiator hoses
Cracks/damage Replace.
3. Measure:
Radiator cap ...
Be a Responsible Owner
As the vehicle's owner, you are responsible
for the safe and proper operation
of your motorcycle.
Motorcycles are single-track vehicles.
Their safe use and operation are dependent
upon the use of proper riding
techniques as well as the expertise of
the operator. Every operator should
...