2-11
MAINTENANCE SPECIFICATIONS
Charging system:
System type
AC magneto
----
Model (stator)/manufacturer
5UM 30/YAMAHA
----
Normal output
14 V/120 W at 5,000 r/min
----
Charging coil resistance (color)
0.288–0.432
Ω
at 20 °C (68 °F) (White–Ground)
----
Lighting coil resistance (color)
0.224–0.336
Ω
at 20 °C (68 °F) (Yellow–Ground) ----
Rectifier/regulator:
Regulator type
Semiconductor short circuit
----
Model/manufacture
SH770AA/SHINDENGEN
----
Regulated voltage (AC)
12.5–13.5 V
----
Regulated voltage (DC)
14.0–15.0 V
----
Rectifier capacity (AC)
12 A
----
Rectifier capacity (DC)
8 A
----
Electric starting system:
Type
Constant mesh
----
Starter motor:
Model/manufacturer
5UM01/YAMAHA
----
Operation voltage
12 V
----
Output
0.35 kW
----
Armature coil resistance
0.0189–0.0231
Ω
at 20 °C (68 °F)
----
Brush overall length
7 mm (0.28 in)
3.5 mm (0.14
in)
Brush quantity
2 pcs.
----
Spring force
3.92–5.88 N (400–600 g, 14.1–21.2 oz)
----
Commutator diameter
17.6 mm (0.69 in)
16.6 mm (0.65
in)
Mica undercut (depth)
1.5 mm (0.06 in)
----
Starter relay:
Model/manufacturer
2768090-A/JIDECO
----
Amperage rating
180 A
----
Coil winding resistance
4.2–4.6
Ω
at 20 °C (68 °F)
----
Starting circuit cut-off relay:
Model/manufacturer
ACM33221 M38/MATSUSHITA
----
Coil winding resistance
75.69–92.51
Ω
at 20 °C (68 °F)
----
Fuse (amperage×quantity):
Main fuse
10 A × 1
----
Reserve fuse
10 A × 1
----
Item
Standard
Limit
Summary of Contents for WR250F(Y) 2009
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Page 71: ...3 18 ENGINE INTAKE EXHAUST...
Page 84: ...3 31 ELECTRICAL Charging method using a variable voltage charger...
Page 85: ...3 32 ELECTRICAL Charging method using a constant voltage charger...
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