Yamaha YZ450FN 2022 Owner's Service Manual page 299

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1. ECU (Engine Control Unit)
2. Lead battery (12 V)
3. Vehicle battery
4. Vehicle
5. Coupler for connecting optional part
6. FI diagnostic tool sub-lead
7. Sub-harness (included with the Yamaha diag-
nostic tool)
8. Vehicle communication cable (included with
the Yamaha diagnostic tool)
9. Yamaha diagnostic tool
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FUEL INJECTION SYSTEM
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