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Yamaha YZ450F 2021 - Electrical Specifications

Yamaha YZ450F 2021
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ELECTRICAL SPECIFICATIONS
2-8
EAM20130
ELECTRICAL SPECIFICATIONS
Voltage
System voltage 12 V
Ignition system
Ignition system TCI
Ignition timing (B.T.D.C.) 8.0–12.0 /2000 r/min
Engine control unit
Model B2W0
Ignition coil
Primary coil resistance 2.16–2.64
Secondary coil resistance 8.64–12.96 k
Spark plug cap
Resistance 7.50–12.50 k
Charging system
Charging system AC magneto
Standard output 14.0 V, 5.4 A at 5000 r/min
Stator coil resistance 0.512–0.768
Rectifier/regulator
Regulator type Single-phase
Regulated voltage (DC) 14.0–14.8 V
Battery
Model BR98
Voltage, capacity 12 V, 2.4 Ah (5 HR)
Starter motor
Brush overall length 11.0 mm (0.43 in)
Brush overall length limit 5.5 mm (0.22 in)
Brush spring force 4.80–7.20 N (489–734 gf, 17.28–25.92 oz)
Mica undercut (depth) 2.40 mm (0.09 in)
Fuel injection sensor
Crankshaft position sensor resistance 228–342
Intake air temperature sensor resistance 5400–6600 at 0 C (5400–6600 at 32 F)
Intake air temperature sensor resistance 289–391 at 80 C (289–391 at 176 F)
Coolant temperature sensor resistance 2513–2777 at 20 C (2513–2777 at 68 F)
Coolant temperature sensor resistance 210–221 at 100 C (210–221 at 212 F)
Fuse(s)
Main fuse 15.0 A
Spare fuse 15.0 A

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