1997 Yamaha YFM600FWAK ATV Service Manual, Page 290Get this manual
CHARGING SYSTEM Start the engine and accelerate to about 3,000 rminCharging voltage: 14 at 3,000 rmin NOTE: Use fully charged battery OUTOF SPECIFICATION
EB804012
MEETS SPECIFICATION
The charging circuit is not faulty
4.Stator coil resistance Disconnect the AC magneto coupler from the wire harness Connect the pocket tester (Q 1) to the stator coilsTester (+) lead -7 White terminal CD Tester (-) lead -7 White terminal Tester (+) lead -7 White terminal CD Tester (-) lead -7 White terminal Measure the stator coil resistanceStator coil resistance: 0.700.86 at 20C (68 OF)