1999-2004 Suzuki King Quad LT-300 300F ATV Factory Service Manual, Page 237Get this manual
ELECTRICAL SYSTEM GENERATOR CONTINUITY CHECK Remove the front fender side cover (L)(See p6-3 Disconnect the generator lead wire coupler Measure the resistance between the three lead wiresIf the resistance is incorrect, replace the generator coil with new oneAlso, check that the generator core is insulated
AToh 09900-25008: Multi circuit tester set
Tester knob indication: Resistance (0) Standard Changing coil resistance: 0.1-1.00 (Yellow-Yellow)
AC GENERATOR NO-LOAD PERFORMANCE Remove the front fender side cover (L)(See p6-3 Disconnect the generator lead wire coupler Start the engine and keep it running at 000 rmin Check the AC voltage between the lead wires of the generator using the multi circuit testerIf the tester reads under 60 V, the AC generator is faulty