Yamaha YZ450F 2021 Owner's Service Manual page 323

FUEL PUMP SYSTEM
2. AC magneto
3. Rectifier/regulator
4. Joint connector
6. Battery
7. Engine ground
8. Frame ground
9. Fuse
16.ECU (Engine Control Unit)
20.Fuel pump
25.Engine stop switch
A. Battery sub-lead
B. Wire harness
C. Ignition coil sub-lead
D. CCU sub-lead
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