Yamaha YZ450FX 2019 Owner's Service Manual page 343

FUEL PUMP SYSTEM
2. AC magneto
3. Rectifier/regulator
4. Joint connector
6. Engine ground
7. Battery
8. Frame ground
9. Main fuse
21.ECU (Engine Control Unit)
25.Fuel pump
33.Engine stop switch
A. Battery sub-lead
B. Wire harness
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