Yamaha YZF-R125 Service Manual: Checking the cooling system
1. Remove:
- Side covers
- Upper side cowlings Refer to "GENERAL CHASSIS" on page 4-1.
2. Check:
- Radiator "1"
- Radiator inlet hose "2"
- Radiator outlet hose "3"
Coolant reservoir hose "4"
Water pump breather hose "5" Cracks/damage → Replace.
Refer to "RADIATOR" on page 6-1.
3. Install:
- Upper side cowlings
- Side covers Refer to "GENERAL CHASSIS" on page 4-1.
Checking the coolant level
1. Stand the vehicle on a level surface.
NOTE:
Place the vehicle on a suitable stand.
Make sure the vehicle is upright.
2. Check:
Coolant level
The coolant level should be between the
max ...
Changing the coolant
1. Remove:
Lower side cowlings
Refer to "GENERAL CHASSIS" on page 4-1.
2. Remove:
Radiator cap "1"
WARNINGA hot radiator is under pressure.
Therefore,
do not remove t ...
Other materials:
Checking the shift drum assembly
1. Check:
Shift drum groove
Damage/scratches/wear Replace
the shift
drum assembly.
Shift drum segment "1"
Damage/wear Replace the
shift drum assembly.
Shift drum bearing "2"
Damage/pitting Replace the
shift drum assembly.
...
General maintenance and lubrication chart
TIP
The air filter needs more frequent service if you are riding in
unusually wet or dusty areas.
Hydraulic brake service
Regularly check and, if necessary, correct the brake fluid level.
Every two years change the brake fluid.
Replace the brake hoses every four ye ...
Checking the tires
The following procedure applies to both of the
tires.
1. Check:
Tire pressure
Out of specification Regulate.
WARNING
The tire pressure should only be checked
and regulated when the tire temperature
equals the ambient air temperature.
The tire pressure must be adjuste ...