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Yamaha WR250F(Y) 2009 Owner's Service Manual page 36

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Item
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)
Starter relay:
Model/manufacturer
Amperage rating
Coil winding resistance
Starting circuit cut-off relay:
Model/manufacturer
Coil winding resistance
Fuse (amperage×quantity):
Main fuse
Reserve fuse
MAINTENANCE SPECIFICATIONS
Standard
AC magneto
5UM 30/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)
2768090-A/JIDECO
180 A
4.2–4.6 Ω at 20 °C (68 °F)
ACM33221 M38/MATSUSHITA
75.69–92.51 Ω at 20 °C (68 °F)
10 A × 1
10 A × 1
2-11
Limit
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3.5 mm (0.14
in)
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16.6 mm (0.65
in)
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