2012 Sportsman 400/500 and EFI Tractor Service Manual 9923412, Page 136Get this manual
CARBURATION AND FUEL SYSTEM FUEL TANK VENT ROUTING (NON INTL)
Fuel Tank Vent Hose Routing
Proper fuel tank hose routing is important for proper fuel system operationBe sure the fuel tank vent hose is routed correctly and not kinkedInstalled In Locating Feature of CVT Outlet Duct