Yamaha 2003 YFZ450S, Service Manual

Page: 37 / 375

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SPEC
ELECTRICAL SPECIFICATIONS
EBS01004
ELECTRICAL SPECIFICATIONS
Item Standard Limit
Voltage 12 V ----
Ignition system
Ignition timing (B.T.D.C.) 7.5°/1,800 r/min ----
Advancer type Digital type ----
C.D.I.
C.D.I. unit model/manufacturer 5TG/MORIC ----
Pickup coil resistance/color 248 ~ 372
Ω
at 20 °C (68 °F) red–white ----
Ignition coil
Model/manufacturer J0474/DENSO ----
Minimum ignition spark gap 6 mm (0.24 in) ----
Primary winding resistance 0.08 ~ 0.10
Ω
at 20 °C (68 °F) ----
Secondary winding resistance 4.56 ~ 6.84 k
Ω
at 20 °C (68 °F) ----
Charging system
Type A.C. magneto ----
Model/manufacturer F5TG/MORIC ----
Nominal output 14 V 120 W at 5,000 r/min ----
Lighting coil resistance/color 0.224 ~ 0.336
Ω
at 20 °C (68 °F)
yellow–ground
----
Charging coil resistance/color 0.288 ~ 0.432
Ω
at 20 °C (68 °F)
white–ground
----
Rectifier/regulator
Type Semi conductor-short circuit ----
Model/manufacturer SH712AB/SHINDENGEN ----
No load regulated voltage (DC) 14.1 ~ 14.9 V ----
(AC) 13.0 ~ 14.0 V ----
Rectifier capacity (DC) 8.0 A ----
(AC) 12.0 A ----
Electric starter system
Type Constant mesh type ----
Starter motor
Model/manufacturer SM-14/MITSUBA ----
Output 0.5 kW ----
Armature coil resistance 0.004 ~ 0.005
Ω
at 20 °C (68 °F) ----
Brush overall length 10 mm (0.39 in) 3.5 mm
(0.14 in)
Spring force 7.16 ~ 9.52 N
(730 ~ 971 gf, 25.77 ~ 34.27 oz) ----
Commutator diameter 28 mm (1.10 in) 27 mm
(1.06 in)
Mica undercut 0.7 mm (0.03 in) ----