2004 Official factory service manual for Yamaha YFZ450S ATV Quad., Page 11Get this manual
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CRANKCASE 4-65 OIL SEAL AND BEARING4-67 SEPARATING THE CRANKCASE 4-68 CHECKING THE OIL STRAINER AND OIL DELIVERY PIPE 4-68 CHECKING THE TIMING CHAIN AND GUIDE4-69 CHECKING THE BEARINGS AND OIL SEALS 4