2009 Suzuki 400 LTZ Quad Sport Service Manual, Page 134Get this manual
Emission Control Devices: 3) Inspect the PCV hoses (1) for wear or damageIf it is worn or damaged, replace the PCV hoses with new onesCheck that the PCV hoses (1) is securely connected3) Disconnect the breather hoses (1)4) Remove the oil return tank (2) 1B-2
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4) Reinstall the removed parts
Crankcase Breather (PCV) Hose Removal and Installation
Removal 1) Remove the fuel tank cover and front fenderRefer to "Exterior Parts Removal and Installation in Section 9D (Page 9D-4)"2) Remove the fuel tank lower coverRefer to "Fuel Tank Removal and Installation in Section 1G (Page 1G-9)"3) Disconnect the PCV hoses (1)
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Installation 1) Install the oil return tank and connect the breather hosesRefer to "Engine Oil Hose and Pipe Routing Diagram in Section 1E (Page 1E-1)"2) Install the fuel tankRefer to "Fuel Tank Removal and Installation in Section 1G (Page 1G-9)"3) Install the front fender and fuel tank cover