2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 140Get this manual

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500 EFI FUEL SYSTEM
ELECTRONIC CONTROL UNIT (ECU)4.38
OPERATION OVERVIEW 4.38 ECU REPLACEMENT 4.39 ECU SERVICE 4.39

FUEL PUMP ASSEMBLY 4.40
OPERATIONTESTING 4.40 FUEL PU

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