Yamaha YTZ250S 1986 Service Manual page 139

c.
Electrical
Item
~el
YTZ250S
Voltage 12 V
Ignition System:
Ignition timing (B.T.D.C.) 8.5° at 500 r/ min
Advanced Timing (B .T.D .C.) 14° at 7,500 r/ min
Advancer Type Electrical
20°
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10°
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Engine Speed (x 1()3 r/min)
C.D.I. :
Magneto-Modell Manufacturer F3T2547/MITSUBISHI
Pickup Coil Resistance (Color) 10.7n±10% at 20°C (68°F) (W/R-B)
Sorce Coil Resistance (Color) 315n ± 10% at 20°C (68°F) (Br- B)
C.D .I. Unit-Model l Manufacturer F8T07072/MITSUBISHI
Ignition Coil:
Model I Manufactu rer
F6T51173/ MITSUBISHI
Minimum Spark Gap
6 mm (0 .24 in)
Primary Winding Resistance
0.29n ± 15% at 20°C (68°F)
Secondary Winding Resistance
4.0Kn± 15% at 20°C (68°F)
Charging System/Type Flywheel magneto
F.W. Magneto:
Lighting Voltage 8.5 V or more at 1,500 r/min
16 V or less at 8,000 r/min
Lighting Coil Resistance (Color) O .58n± 10% at 20°C (68°F)
(Y/R-B)
15
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10
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0 1 2 3 4 5
6 7 8
Engine Speed (x 1()3 r/min)
Voltage Regulator :
Model/Manufacturer S85168ITOSHIBA TRIZ-50 / HITACHI
Type Short circuit type
No Load regulated Voltage 13.5-14.1 V
Pilot light checker:
Model
I
Manufactu rer EUP-F2B1M220B/MATSUSHITA
6-15