Yamaha XF50W Service Manual page 308

NOTE:
Make sure the battery is fully charged.
• Is the charging voltage within specification?
NO
*
EAS00776
4. Stator coil resistance
• Disconnect the starter coil coupler from
wireharness.
• Connect the pocket tester
tor coil as shown.
Positive tester probe -»white 1
Negative tester probe
• Measure the stator coil resistances.
SI
Stator coil resistance
0.28 ~ 0.42
• Is the stator coil OK?
YES
V
YES
l z
The charging circuit is
OK.
(Q x 1) to the sta-
-> white 2
at 20°C (68°F)
NO
4
Replace the crank-
shaft position sensor/
stator coil assembly.
CHARGING SYSTEM
EAS00779
5. Wiring
• Check the wiring connections of the entire
charging system.
Refer to "CIRCUIT DIAGRAM".
• Is the charging system's wiring properly con-
nected and without defects?
YES
V
Replace the recti-
fier/regulator.
8-26
ELEC
4
NO
Properly connect or re-
pair the charging
system's wiring.
+i