Yamaha YZ250F(E) Owner's Service Manual page 86

CHECKING THE WHEEL BEARINGS .....................................................3-33
CHECKING AND ADJUSTING THE STEERING HEAD ..........................3-33
LUBRICATING THE LEVERS ..................................................................3-34
LUBRICATING THE PEDAL ....................................................................3-34
ELECTRICAL SYSTEM..................................................................................3-35
CHECKING THE SPARK PLUG ..............................................................3-35
CHECKING THE IGNITION TIMING........................................................3-35