2000 Yamaha YFM400FWA(M) Factory Service workshop Manual, Page 189Get this manual
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CRANKSHAFT AND OIL PUMP CRANKSHAFT REMOVAL 1.Remove: Crakshaft seal 1
OIL PUMP INSPECTION 1.Inspect: Oil pump driven gear Rotor housings Rotor cover Cracksweardamage Replace
2.Measu