2001 Yamaha YFM660 Raptor Factory Service Manual, Page 236Get this manual

2001 Yamaha YFM660 Raptor Factory Service Manual, Page 236

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OIL PUMP
2.Measure: Tip clearance (between the inner rotor and the outer rotor 2) Side clearance (between the outer rotor and the pump housing 3) Out of specification Replace the oil pumpTip cle