2002-2006 Yamaha YFR450FAR Service Manual LIT-11616-16-01, Page 197Get this manual
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CRANKSHAFT AND OIL PUMP
2.Remove: Crankshaft Use crankcase separating tool 1 Crankcase separating tool: PNYU-01135-A, 90890-01135
CHECKING THE OIL PUMP 1.Check: Oil pump driven gear