Yamaha WR250F(W) Owner's Service Manual page 110

EC212300
ELECTRICAL
Item
Ignition system:
Advancer type
CDI:
Pickup coil resistance (color)
CDI unit-model/manufacturer
Ignition coil:
Model/manufacturer
Minimum spark gap
Primary coil resistance
Secondary coil resistance
Charging system:
System type
Model (stator)/manufacturer
Normal output
Charging coil resistance (color)
Lighting coil resistance (color)
Rectifier/regulator:
Regulator type
Model/manufacture
Regulated voltage (AC)
Regulated voltage (DC)
Rectifier capacity (AC)
Rectifier capacity (DC)
Electric starting system:
Type
Starter motor:
Model/manufacturer
Operation voltage
Output
Armature coil resistance
Brush overall length
Brush quantity
Spring force
Commutator diameter
Mica undercut (depth)
MAINTENANCE SPECIFICATIONS
Electrical
248 ~ 372 Ω at 20 °C (68 °F)
(White – Red)
5UM-E0/YAMAHA (For USA)
5UM-F0/YAMAHA (Except for USA)
5UL-10/DENSO
6 mm (0.24 in)
0.08 ~ 0.10 Ω at 20 °C (68 °F)
4.6 ~ 6.8 kΩ at 20 °C (68 °F)
AC magneto
5UM 20/YAMAHA
14 V/120 W at 5,000 r/min
0.288 ~ 0.432 Ω at 20 °C (68 °F)
(White – Ground)
0.224 ~ 0.336 Ω at 20 °C (68 °F)
(Yellow – Ground)
Semiconductor short circuit
SH770AA/SHINDENGEN
12.5 ~ 13.5 V
14.0 ~ 15.0 V
12 A
8 A
Constant mesh
5UM01/YAMAHA
12 V
0.35 kW
0.0189 ~ 0.0231 Ω at 20 °C (68 °F)
7 mm (0.28 in)
2 pcs.
3.92 ~ 5.88 N
(400 ~ 600 g, 14.1 ~ 21.2 oz)
17.6 mm (0.69 in)
1.5 mm (0.06 in)
2 - 17
Standard
SPEC
Limit
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
----
3.5 mm (0.14 in)
----
----
16.6 mm (0.65 in)
----