Yamaha YZ250 2005 Manuel D'atelier Du Proprietaire page 216

IGNITION TIMING CHECK
7. Adjust:
9 Ignition timing
Adjustment steps:
9 Loosen the screws (stator) 1.
9 Align the punch mark on the rotor with
punch mark on the stator 2 by moving the
stator.
9 Tighten the screws (stator).
3-40
INSP
ADJ
Screw (stator):
7 Nm (0.7 m•kg, 5.1 ft•lb)