Yamaha YZF-R125 Service Manual: Radiator
Cooling system
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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
scre ...
Other materials:
Chassis tightening torques
NOTE:
First, tighten the lower ring nut to approximately 48 Nm (4.8 m.kg,
35 ft.lb) with a torque wrench, then
loosen the lower ring nut completely.
Retighten the lower ring nut to 13 Nm (1.3 m.kg, 9.4 ft.lb) with a
torque wrench.
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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:
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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 ...