2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 367Get this manual
Quality of the image is intentionally reduced!
ELECTRIC STARTING SYSTEM
6.Measure: Brush spring force Fatigueout of specification Replace as setBrush spring force: 7.6510.01 Nm (7801,020 g, 27.536.0 oz)
7.Inspect: Oil seal Bushi