1987-2009 Yamaha ATV YFM350X Warrior Raptor Service Manual, Page 53Get this manual
ENGINE OIL REPLACEMENT Drain plug(crankcase): 43 Nm (4.3 kg, 31 ft Ib)
Crankcase Oil quantity: With oil filter change 2.5L (2.2 Imp qt, 2.6 US qt) Without oil filter change 2.4L (2.1 Imp qt,2.5 US qtl Refer to the "ENGINE OIL LEVEL INSPECTION" section
9Inspect: Oil flow