Suzuki DL650K5 Service Manual page 607

Step 4
1) Inspect the clearances of the front and rear wheel speed sen-
sor – sensor rotor using the thickness gauge.
$ Wheel speed sensor – sensor rotor clearance:
# 09900-20803: Thickness gauge
09900-20806: Thickness gauge
Are the clearances OK?
YES Replace the ABS control unit/HU.
NO Adjust the clearance.
0.3 – 1.5 mm (0.012 – 0.059 in)
DL650K7/AK7 ('07-MODEL) 13-103