2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 93Get this manual

2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 93

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ENGINE One Way Valve
Crankcase Separation
1 Remove flange bolts (10) from magneto side crankcase evenly in criss-cross pattern
2 Remove (2) bolts holding pump drive gear (C)3 Inspect