Yamaha YZ125 2009 Owner's Service Manual page 133

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2. Install:
• Woodruff key "1"
• Rotor "2"
• Clean the tapered portions of the crankshaft
and rotor.
• When installing the woodruff key, make sure
that its flat surface "a" is in parallel with the
crankshaft center line "b".
• When installing the rotor, align the keyway "c"
of the rotor with the woodruff key.
3. Install:
• Washer "1"
• Nut (rotor) "2"
Nut (rotor):
56 Nm (5.6 m•kg, 40 ft•lb)
Use the rotor holding tool "3".
Rotor holding tool:
YU-1235/90890-01235
4. Adjust:
• Ignition timing
Refer to "CHECKING THE IGNITION TIM-
ING" section in the CHAPTER 3.
Ignition timing (B.T.D.C):
0.48 mm (0.019 in)
5. Tighten:
• Screw (stator) "1"
Screw (stator):
7 Nm (0.7 m•kg, 5.1 ft•lb)
6. Check:
• Ignition timing
Re-check the ignition timing.
7. Connect:
• CDI magneto lead "1"
Refer to "CABLE ROUTING DIAGRAM"
section in the CHAPTER 2.
8. Install:
• Gasket [crankcase cover (left)]
• Crankcase cover (left) "1"
• Screw [crankcase cover (left)] "2"
Screw [crankcase cover (left)]:
5 Nm (0.5 m•kg, 3.6 ft•lb)
Tighten the screws in stage, using a crisscross
pattern.
4-50
CDI MAGNETO

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