1998-2001 Yamaha YFM600FHM Grizzly Factory Service Manual, Page 309Get this manual
IGNITION SYSTEM
7.Pickup coil resistance Disconnect the COl magneto coupler from the wire harness Connect the pocket tester (0 100) to the pickup coil terminalTester (+) lead Tester (-) lead Red terminal CD White terminal
Check the pickup coil for the specified resistance
OUT OF SPECIFICATION
Pickup coil resistance: 459, 561 nat 20C (68F) (RedWhite)
Replace the pickup coil
MEETS SPECIFICATION
8.Source coil resistance Disconnect the source coil coupler from the wire harness Connect the pocket tester (0 100) to the source coil terminalTester (+) lead Tester (-) lead Brown terminal CD Green terminal