Yamaha YZF-R125, Service Manual

Page: 88 / 356

ENGINE
3-15
EAS21080
CHECKING THE EXHAUST SYSTEM
1. Check:
• Exhaust assembly “1”
Cracks/damage
→
Replace.
• Exhaust pipe gasket “2”
Exhaust gas leaks
→
Replace.
2. Check:
• Tightening torques of the exhaust pipe nuts
“3” and exhaust assembly bolts “4”
EAS21110
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
maximum level mark “a” and minimum level
mark “b”.
Below the minimum level mark
→
Add the
recommended coolant to the proper level.
NOTE:
To access the coolant reservoir cap “1”, remove
the right side cover. Refer to “GENERAL CHAS-
SIS” on page 4-1.
CAUTION:
ECA5D71035
• Adding water instead of coolant lowers the
antifreeze content of the coolant. If water is
used instead of coolant, check and, if nec-
essary, correct the antifreeze concentra-
tion of the coolant.
• Use only distilled water. However, if dis-
tilled water is not available, soft water may
be used.
3. Start the engine, warm it up for several min-
utes, and then turn it off.
4. Check:
• Coolant level
NOTE:
Before checking the coolant level, wait a few
minutes until it settles.
EAS21120
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.
EAS21130
CHANGING THE COOLANT
1. Remove:
• Lower side cowlings
Refer to “GENERAL CHASSIS” on page 4-1.
T
R
.
.
Exhaust pipe nut
20 Nm (2.0 m·kg, 14 ft·lb)
Exhaust assembly bolt
20 Nm (2.0 m·kg, 14 ft·lb)
2
3
3
4
1
4
1
a
b
1
5
4
2
3
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