1999-2004 Suzuki King Quad LT-300 300F ATV Factory Service Manual, Page 364Get this manual
1119 LTF300FK2('02MODEL)
BRAKE DISC INSPECTION
Remove the front wheel(L7"LT-F300300F 6-7) Check the brake disc for cracks or damage and measure the thickness using the micrometerIf any damages are found or it the thickness is less than the service limit, replace the brake disc with new one
,gb 09900-20205: Micrometer (0-25 mm)
_ Brake disc thickness Service Limit: 3.0 mm (0.12 in)
Measure the runout using the dial gaugeIf the runout exceeds the service limit, replace the brake disc with new one
,gb 09900-20607: Dial gauge (1100
09900-20701: Magnetic stand _