2001 Yamaha YFM660 Raptor Factory Service Manual, Page 299Get this manual

2001 Yamaha YFM660 Raptor Factory Service Manual, Page 299

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ELECTRIC STARTING SYSTEM
6.Measure: Brush spring force Fatigueout of specification Replace as setBrush spring force: 7.6510.01 Nm (27.536.0 oz)

7.Check: Oil seal Bushing O-rings Wea